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Hamilton Sundstrand Corporation patents (2017 archive)


Recent patent applications related to Hamilton Sundstrand Corporation. Hamilton Sundstrand Corporation is listed as an Agent/Assignee. Note: Hamilton Sundstrand Corporation may have other listings under different names/spellings. We're not affiliated with Hamilton Sundstrand Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "H" | Hamilton Sundstrand Corporation-related inventors


Integration of inductor and damper for power filters

An inductor damper circuit includes a toroidal inductor having an inductor coil and an inductor housing, and a resistive element configured around a periphery of the inductor coil and having one end connected to the toroidal inductor, where the resistive element is printed on a flexible substrate and configured between the inductor coil and the inductor housing, and the resistive element is integrated with the toroidal inductor.. . ... Hamilton Sundstrand Corporation

Actuator release mechanism

An actuator release mechanism comprising an axially moveable member such as a piston biased in a first axial position by a bias spring and driven to a second axial position by an actuation means such as a solenoid arranged in substantially the same axis as the axially moveable member.. . ... Hamilton Sundstrand Corporation

Heat exchanger system and method of operation

A method of operating a heat exchanger is disclosed in which an electric field is applied to a hydrophobic surface having condensed water droplets thereon to reduce a contact angle between the individual droplet surfaces and the hydrophobic surface, and to increase droplet surface energy to a second surface energy level. The electric field is removed to increase the contact angle between the individual droplet surfaces and the hydrophobic surface, and to reduce droplet surface energy to a third surface energy level. ... Hamilton Sundstrand Corporation

Inlet tube design

A ram air fan assembly includes an outer housing. An inner housing is located within the outer housing. ... Hamilton Sundstrand Corporation

Slat disconnect sensor

A sensor for detecting relative movement between two adjacent components includes a first member, a second member rotatable about an axis relative to the first member, and a fuse element including a first electrical contactor connected to the first member and a second electrical contactor connected to the second member. When the first member and the second member are skewed, the first electrical contactor and the second electrical contactor are not in electrical contact.. ... Hamilton Sundstrand Corporation

Fuel tank system and method

A fuel tank system is disclosed that includes a fuel tank and a first fluid flow path between a gas space in the fuel tank and outside of the fuel system. A gas separation membrane is disposed with a first side in communication with the first fluid flow path and a second side in communication with a second fluid flow path. ... Hamilton Sundstrand Corporation

Fault detection system for isolated two-switch exciter drive gate driver

A generator control unit (gcu) includes a fault detection system configured to generate a direct current (dc) voltage signal based on a difference of a dc-equivalent voltage between the positive and negative exciter gate drive signals. The fault detection system further outputs a fault detection signal indicating the fault status of the gate drive integrated circuits based on a comparison between the dc average voltage signal and a threshold value.. ... Hamilton Sundstrand Corporation

Variable-speed constant-frequency power control

A variable-speed constant-frequency (vscf) power converter includes a generator control operable to regulate an output voltage of a variable frequency generator at a variable frequency. The vscf power generator also includes an inverter control operable to regulate a vscf output voltage at a point-of-regulation at a constant frequency, where the generator control and the inverter control independently control a main line contactor of the point-of-regulation to provide redundant fault protection for an aircraft use.. ... Hamilton Sundstrand Corporation

Controlled thin wall thickness of heat exchangers through modeling of additive manufacturing process

A method of producing a heat exchanger includes designing the heat exchanger to include a wall with a target thickness. A model is created relating process parameters to geometry of a single track melt pool and relating the single track melt pool geometry to a heat exchanger wall thickness. ... Hamilton Sundstrand Corporation

Reduced thermal expansion closure bars for a heat exchanger

A plate fin heat exchanger is configured to receive hot flow from a hot source and cool flow from a cool source. The plate fin heat exchanger includes a plurality of plates arranged in parallel to define a plurality of flow passages therebetween, and a set of closure bars arranged at a first side of the plurality of plates to seal a first set of the flow passages against ingress of the hot flow, thereby directing the hot flow into a second set of the flow passages. ... Hamilton Sundstrand Corporation

Header for a heat exchanger

A heat exchanger having a first core with a first end and a second end and having a first plurality of hot flow channels fluidly isolated from a first plurality of cool flow channels. The first plurality of hot flow channels and the first plurality of cool flow channels can be arranged in a first checkerboard pattern. ... Hamilton Sundstrand Corporation

Diaphragm for pneumatic controller

A pneumatic controller includes a housing, a piston located in the housing and movable therein and a diaphragm located at the piston to isolate a first chamber of the pneumatic controller from a second chamber of the pneumatic controller. The diaphragm includes a first diaphragm surface, a diaphragm opening extending through the diaphragm, and a fabric reinforcing layer to strengthen the diaphragm. ... Hamilton Sundstrand Corporation

Windmill bypass with shutoff signal

A gas turbine engine shut-down system includes a pump configured to draw a flow of fuel from a source, a fuel nozzle configured to receive the flow of fuel from the pump, a fuel shut-off valve in fluid communication with the pump, a recirculation circuit for circulating excess fuel to a location upstream of the pump; a solenoid valve in communication with the pump and the recirculation circuit; and a fuel-bypass valve. The fuel-bypass valve includes a first opening connected to the fuel pump, a second opening connected to the fuel shut-off valve, a third opening connected to the recirculation circuit, a fourth opening connected to the solenoid valve, and a piston disposed within the fuel-bypass valve and movable between a plurality of positions.. ... Hamilton Sundstrand Corporation

Reconfigurable multi-permanent magnet generator based power generating system

A high voltage power generating system includes a first poly-phase permanent magnet generator including at least one control winding and a plurality of power windings, a second poly-phase permanent magnet generator including at least one control winding and a plurality of power windings, the first and second poly-phase permanent magnet generators being arranged in series in at least one operational mode, and the first poly-phase permanent magnet generator being phase shifted relative to the second poly-phase permanent magnet generator such that residual voltage output of the first poly-phase permanent magnet generator is offset by the second poly-phase permanent magnet generator during a first operational mode.. . ... Hamilton Sundstrand Corporation

12/14/17 / #20170359010

Switched reluctance generator based automotive power generating system

A power generating system architecture includes a prime mover, a generator component including a switched reluctance generator, the switched reluctance generator being mechanically coupled to the prime mover and having a plurality of stator pole windings, a dc power bus connected to at least one output of the switched reluctance generator, the dc power bus including a positive bus bar and a negative bus bar, at plurality of series arranged energy storage devices connecting the positive bus bar and the negative bus bar, a plurality of state of charge modules connected to the plurality of energy storage devices, each of the state of charge modules being communicatively coupled to a generator controller, and the generator controller being configured to independently control each of the stator pole windings.. . ... Hamilton Sundstrand Corporation

12/14/17 / #20170359009

High voltage dc power generating system including selectively removable neutral node

A high voltage dc electric power generating system includes a poly-phase permanent magnet generator having at least one control winding and a plurality of power windings. Each of the power windings is a phase of the poly-phase permanent magnet generator. ... Hamilton Sundstrand Corporation

12/14/17 / #20170358930

High voltage power generating system

A power system architecture includes a prime mover, a plurality of single phase permanent magnet generators mechanically coupled to the prime mover, a dc power bus including a plurality of dc power storage components, each of the dc energy storage components being electrically connected to at least one of the single phase permanent magnet generators, a plurality of state of charge calculators, each of the state of charge calculators being connected to one of the dc energy storage component and being communicatively coupled to a generator control unit, and wherein the generator control unit is configured to independently control each of the single phase permanent magnet generators.. . ... Hamilton Sundstrand Corporation

12/14/17 / #20170356696

Complex pin fin heat exchanger

A heat exchanger has a plurality of outer walls and at least one inner wall. A first fluid port communicates a first fluid into a chamber on one side of the at least one inner wall and a second port communicates a second fluid into a second chamber on an opposed side of the at least one inner wall. ... Hamilton Sundstrand Corporation

12/14/17 / #20170356565

Rotary actuation mechanism

An actuation mechanism for a rotary element, comprises an electric drive motor coupled to a threaded drive spindle. A threaded drive nut is received on said drive spindle for movement along said drive spindle. ... Hamilton Sundstrand Corporation

12/14/17 / #20170356561

Check valves

A valve housing for a check valve comprises a housing body for mounting a pair of flapper elements and a pair of valve openings extending through said valve body. The valve openings are separated by a web which extends from one side of the valve body to an opposed side of the valve body. ... Hamilton Sundstrand Corporation

12/14/17 / #20170356555

Check valve

A check valve comprises a valve housing defining a pair of valve openings, a pair of mounting posts arranged on opposed sides of the valve housing, a hinge pin mounted between said mounting posts, a pair of flapper elements pivotably mounted to the one or more hinge pins for rotation relative to the housing between an open position in which they permit fluid flow through the respective valve openings and a closed position in which they prevent fluid flow through the valve openings. A pair of elastically deformable leaf spring stop elements, each of which comprise respective end portions that are mounted to, and extend upwardly from, said mounting posts and a stop portion arching upwardly from, and extending between said end portions, such that each flapper element will engage a respective surface of said stop portion when in the open position.. ... Hamilton Sundstrand Corporation

12/14/17 / #20170356547

Piston ring assembly

A piston ring assembly includes an inner ring, a first outer ring, and a second outer ring. The inner ring has an outer surface and an inner surface that extends between a first inner ring face and a second inner ring face. ... Hamilton Sundstrand Corporation

12/14/17 / #20170356490

Air bearing-corrugated thrust bearing disc

A thrust disc for an aircraft and methods of making and using the thrust disc are provided. The thrust disc includes a planar body, and a region unitarily formed from a portion of the body, wherein the region has a plurality of sides defining the region on the planar body, wherein the region has a textured feature, and wherein a subset of the plurality of sides are cut and at least one of the plurality of sides is integrally connected to the body.. ... Hamilton Sundstrand Corporation

12/14/17 / #20170356348

Altitude compensating bleed valve

A valve includes a housing with a mounting portion, a venting portion, and a cap portion. The valve also includes a piston in the housing with a shaft, a disc, and a flange, the piston being moveable between a closed position and an open position. ... Hamilton Sundstrand Corporation

12/14/17 / #20170355019

Thermal control for additive manufacturing

An additive manufacturing system for building a product includes a base plate for mounting the product thereon, and at least one heating element shaped to at least partially conform to the product and configured to apply heat to at least a portion of the product as the product is additively manufactured to reduce thermal gradients in the product.. . ... Hamilton Sundstrand Corporation

12/14/17 / #20170355018

Powder deposition for additive manufacturing

An additive manufacturing method includes cold spraying a powder onto a build area to create a densified powder layer. The method can include high speed machining the densified powder layer after cold spraying to create a smooth layer.. ... Hamilton Sundstrand Corporation

12/14/17 / #20170354915

Cartridge for mounting lithium hydroxide sheets

A cartridge mounting an air treatment material is a housing defining a housing in a perimeter. The air treatment material is received within the housing, and spaced from the inner wall of the housing by a plurality of resilient sheets. ... Hamilton Sundstrand Corporation

12/14/17 / #20170354908

Particle separation system

A particle separation device to remove particulate matter from an exterior air flow for use with an environmental control system includes a curved airflow path with an inner radius and an outer radius, the curved air flow path to receive the exterior air flow, a particle passage disposed along at least one of the inner radius and the outer radius to receive the particulate matter from the exterior air flow, a circumferential volute to receive the particulate matter from the particle passage, and a duct to transport the particulate matter from the circumferential volute to a downstream region.. . ... Hamilton Sundstrand Corporation

12/07/17 / #20170351233

Multi-channel control switchover logic

A multi-channel control system includes at least a primary control microprocessor and a back-up control microprocessor operable to control a device. The primary control microprocessor and the back-up control microprocessor assert control over a controlled device according to a locally stored method of controlling a back-up microprocessor assumption of control of a device.. ... Hamilton Sundstrand Corporation

12/07/17 / #20170350626

Sublimator having a porous plate with integral primary and secondary heat transfer surfaces

A sublimator includes a porous plate having a first surface comprising a low pressure side and a second surface comprising a high pressure side such that refrigerant is configured to move through the porous plate from the high pressure side to the low pressure side. The second surface defines a primary heat transfer surface. ... Hamilton Sundstrand Corporation

12/07/17 / #20170350463

Hydraulic damping systems

A hydraulic damping device includes a housing defining a fluid inlet and a fluid outlet, a damping plate disposed within the housing, the damping plate including a plurality of damping holes defined therethrough and positioned to allow fluid communication between the fluid inlet and the fluid outlet, and a blocking member disposed within the housing and configured to rotate relative to the damping plate to progressively block the damping holes.. . ... Hamilton Sundstrand Corporation

12/07/17 / #20170350435

Coated metal article

An article is disclosed that includes a first substrate of a first metal or metal alloy. An aluminum alloy first layer on a surface of the first substrate includes is galvanically less noble than the first metal or metal alloy. ... Hamilton Sundstrand Corporation

12/07/17 / #20170350322

Heated starter air valve

A heated valve is provided and includes a valve body having an inlet, an outlet downstream from the inlet and a valve section fluidly interposed between the inlet and the outlet, a valve element operably disposed within the valve section to assume and move between at least a first position at which fluid communication between the inlet and the outlet is prevented by the valve element and a second position at which the fluid communication is permitted and a heating system. The heating system is in operable communication with at least one of the valve body and the valve element and is configured to melt ice that could prevent movement of the valve element between the first and second positions.. ... Hamilton Sundstrand Corporation

12/07/17 / #20170350048

Short fiber composite material

A method of forming a fiber reinforced composite material includes cutting a plurality of reinforcing fibers to a selected length, directing the plurality of reinforcing fibers through a fiber alignment mechanism, orienting the plurality of reinforcing fibers in a selected direction via the fiber alignment mechanism, and adhering the aligned plurality of reinforcing fibers to a substrate material to form the fiber reinforced composite material. A system for manufacturing a fiber reinforced composite material includes a feed mechanism to direct a substrate material along a selected path, a cutting mechanism to cut a plurality of reinforcing fibers to a selected length, and a fiber alignment mechanism to orient the plurality of reinforcing fibers in a selected direction before adhering the plurality of reinforcing fibers to the substrate material.. ... Hamilton Sundstrand Corporation

12/07/17 / #20170349294

Integral rat generator cooling holes

A ram air turbine having: a strut assembly having an outer housing enclosing a first inner chamber; a generator housing operatively connected to the strut assembly, the generator housing having an outer surface enclosing a second inner chamber, the second inner chamber being fluidly connected to first inner chamber; a turbine assembly operably connected to the strut assembly, the turbine assembly in operation rotates in freestream air; and a power generation device mechanically connected to the turbine assembly and located within the second inner chamber, the power generation device generates power as turbine assembly rotates. The strut assembly includes a first screen portion having a plurality of inlet holes integrally formed in the outer housing. ... Hamilton Sundstrand Corporation

11/30/17 / #20170343113

Thrust plate for butterfly valve

A thrust plate for a butterfly valve includes a thrust plate body that defines a recess that extends between a bottom thrust surface, side walls, and an open top. There is a nickel-based or cobalt-based wear-resistant coating located on the bottom thrust surface. ... Hamilton Sundstrand Corporation

11/30/17 / #20170342899

Multiple nozzle configurations for a turbine of an environmental control system

An airplane is provided. The airplane includes a pressurized medium, a turbine, and a valve. ... Hamilton Sundstrand Corporation

11/30/17 / #20170342853

In-line shutoff valves

An in-line shutoff valve includes a valve body with an inlet chamber, an outlet chamber, and a poppet seat disposed between the inlet and outlet chambers. A poppet is movably disposed within the valve body and has an open and closed position. ... Hamilton Sundstrand Corporation

11/30/17 / #20170342838

Mixing ram and bleed air in a dual entry turbine system

A system is provided. The system includes a first medium at a first pressure, a second medium at a second pressure, and a medium conditioning sub-system. ... Hamilton Sundstrand Corporation

11/30/17 / #20170341768

Environmental control system with an outflow heat exchanger

An airplane is provided. The airplane includes a pressurized volume and an air conditioning system. ... Hamilton Sundstrand Corporation

11/30/17 / #20170341767

Mixing bleed and ram air at a turbine inlet

An airplane is provided. The airplane includes a first medium, a second medium, and an air conditioning. ... Hamilton Sundstrand Corporation

11/30/17 / #20170341766

Mixing bleed and ram air at a turbine inlet of a compressing device

An air conditioning system for an aircraft is provided. The air conditioning system includes a first rotating component and a second rotating component. ... Hamilton Sundstrand Corporation

11/30/17 / #20170341765

Mixing bleed and ram air using an air cycle machine with two turbines

An air cycle machine for an environmental control system for an aircraft is provided. The air cycle machine includes a compressor configured to compress a first medium, a turbine configured to receive second medium, a mixing point downstream of the compressor and downstream of the turbine; and a shaft mechanically coupling the compressor and the turbine.. ... Hamilton Sundstrand Corporation

11/30/17 / #20170341764

Mixing ram and bleed air in a dual entry turbine system

An air cycle machine is provided. The air cycle machine can be included an environmental control system of an aircraft. ... Hamilton Sundstrand Corporation

11/30/17 / #20170341761

Mixing bleed and ram air using a dual use turbine system

An airplane is provided. The airplane includes a pressurized volume and an air conditioning system. ... Hamilton Sundstrand Corporation

11/30/17 / #20170341760

Energy flow of an advanced environmental control system

An airplane is provided. The airplane includes a compressing device. ... Hamilton Sundstrand Corporation

11/30/17 / #20170341759

Energy flow

An airplane is provided. The airplane includes a compressing device including a turbine and a compressor. ... Hamilton Sundstrand Corporation

11/30/17 / #20170341758

Mixing bleed and ram air using a two turbine architecture with an outflow heat exchanger

An airplane is provided. The airplane includes a first medium at a first pressure, a second medium at a second pressure, a third medium at a third pressure; and an air conditioning system. ... Hamilton Sundstrand Corporation

11/30/17 / #20170341019

On-board vehicle inert gas generation system

An onboard inert gas system has an electrochemical and a membrane gas separator. The electrochemical separator includes an electrochemical cell including a cathode and anode separated by an electrolyte separator. ... Hamilton Sundstrand Corporation

11/23/17 / #20170336155

Heat exchanger and fabrication

A heat exchanger and method for making a heat exchanger assembly is described, involving generating a digital model of a heat exchanger assembly that comprises a heat exchanger core within a housing. The digital model is inputted into an additive manufacturing apparatus or system comprising an energy source. ... Hamilton Sundstrand Corporation

11/23/17 / #20170336149

Multiple flow heat exchanger

A heat exchanger to cool an oil flow with an air flow and a fuel flow includes at least one oil flow layer to receive the oil flow, an air flow layer to receive the air flow, wherein the air flow layer is in thermal communication with the at least one oil flow layer, and a fuel flow layer to receive the fuel flow, wherein the fuel flow layer is in thermal communication with the at least one oil flow layer.. . ... Hamilton Sundstrand Corporation

11/23/17 / #20170335775

Solenoids for gas turbine engine bleed valves

A solenoid for a bleed valve includes a solenoid body with an actuation fluid passage, a bleed valve passage, and a drive fluid chamber. A main armature is disposed within the solenoid body and is movable between open and closed positions, the actuation fluid passage being in fluid communication with the control outlet in the open position, the actuation fluid passage being fluidly isolated from the bleed valve passage in the second position. ... Hamilton Sundstrand Corporation

11/23/17 / #20170335772

System and method of gas turbine engine shaft cooling

A method of cooling a shaft of a gas turbine engine includes moving a control valve towards a position that inhibits fluid flow from a high pressure air source to an air turbine starter and enables fluid flow from a blower motor to the air turbine starter, in response to a gas turbine engine shutdown. The method further includes operating the blower motor to provide air to the air turbine starter.. ... Hamilton Sundstrand Corporation

11/23/17 / #20170335607

Locking mechanism

A locking mechanism comprises a base comprising a pair of arms projecting therefrom and defining an open mouthed recess for receiving a member to be selectively retained in the recess. The mechanism further comprises a pair of locking elements mounted between said pair of arms for rotational movement between a retracted position in which they permit access to the recess and an extended position in which they extend at least partially across the mouth of the recess. ... Hamilton Sundstrand Corporation

11/23/17 / #20170334567

Propeller assembly having a brush block assembly

A brush wear indicating arrangement is provided. The brush wear indicating arrangement includes an insert, a first electrically conductive brush, and a wear indicator. ... Hamilton Sundstrand Corporation

11/16/17 / #20170331208

Method for fabricating circuit board with resilient seal as vapor barrier

A method for fabricating a circuit board apparatus includes providing a circuit board that has a socket with at least one plated through-hole and providing a connector that has a housing with first and second connector interfaces that have, respectively, at least first and second connector contacts. The first connector interface opens into an interior of the housing such that there is a vapor path through the first connector interface and interior of the housing to the second connector contact at the second connector interface. ... Hamilton Sundstrand Corporation

11/16/17 / #20170331131

On-board aircraft electrochemical system

An onboard electrochemical system of an electrochemical cell including a cathode and an anode separated by an electrolyte separator is selectively operated in either of two modes. In a first mode of operation, water or air is directed to the anode, electric power is provided to the anode and cathode to provide a voltage difference between the anode and the cathode, and nitrogen-enriched air is directed from the cathode to an aircraft fuel tank or aircraft fire suppression system. ... Hamilton Sundstrand Corporation

11/16/17 / #20170328929

Diode noise filter for a speed sensor with mechanically-induced electrical noise

A system for filtering mechanically-induced signal noise from a speed sensor may include a rotating member having at least one target group radially oriented about a center of the rotating member, an inductive speed sensor configured to sense the at least one target group, and two diode pairs each having a first diode and a second diode. The two diode pairs may be operatively connected to the inductive speed sensor and configured to receive a signal having the mechanically-induced signal noise. ... Hamilton Sundstrand Corporation

11/16/17 / #20170328653

Flow distributor for two-phase flow

A fluid distributor for a two-phase fluid flow system includes a distributor housing, a distributor inlet at the distributor housing to admit a two-phase fluid flow to the fluid distributor, a nozzle section through which the two-phase fluid flow is directed, a plurality of flow distribution passages located downstream of the nozzle section, and a plurality of passage outlets in the distributor housing. Each passage outlet of the plurality of passage outlets is coupled to one or more flow distribution passages. ... Hamilton Sundstrand Corporation

11/16/17 / #20170328640

Nested loop heat exchanger

A heat exchanger to exchange heat from a first fluid to a second fluid includes a center manifold to receive the first fluid, a first inner loop having an inner loop inlet and an inner loop outlet, and a first outer loop disposed around the first inner loop, the first outer loop having an outer loop inlet and an outer loop outlet, wherein the inner loop inlet and the outer loop inlet are adjacent, and the inner loop outlet and the outer loop outlet are adjacent.. . ... Hamilton Sundstrand Corporation

11/16/17 / #20170328484

Check valves

The present disclosure relates to a rotary check valve, which utilises the rotation of a rotary element to open and close the valve, rather than pivoting of hinge flappers, such as in other check valve designs. The rotary element is rotatably mounted to a valve plate which features shrouded openings that define windows. ... Hamilton Sundstrand Corporation

11/16/17 / #20170327955

Conversion coating treatment

A kit for applying a coating includes a first handheld container with a first liquid trivalent chromium salt composition disposed therein. A first applicator is disposed in fluid communication with the first container and is configured to dispense the first composition. ... Hamilton Sundstrand Corporation

11/16/17 / #20170326806

Additive manufacturing systems and methods

A method of depositing powder in an additive manufacturing system includes driving a recoater along a drive axis and oscillating the recoater along an oscillation axis. The recoater is oscillated while the recoater is driven along the drive axis to overcome the effect of one or more particle movement restriction mechanisms for smoothing powder deposited in a build chamber of an additive manufacturing system.. ... Hamilton Sundstrand Corporation

11/09/17 / #20170322839

Single event latchup mitigation in solid state power controllers

A system for mitigating a solid state power controller (sspc) open fault caused by single event latchup (sel) on a power module includes a microprocessor in a control communication and power supply module (ccp) configured to determine whether communication with a microcontroller in at least one of a solid state power controller (sspc) and a second sspc in the power module is lost. The microprocessor in the ccp is operatively connected to the power module and configured to notify, via a backplane communication bus, the microcontroller on the power module that the communication with the sspc in the power module is lost. ... Hamilton Sundstrand Corporation

11/09/17 / #20170322588

Integrated system and method for testing system timing margin

A built-in test circuit for testing a system timing margin of a processing device under-test is provided. The processing device includes a controller and first clock circuit, wherein the first clock circuit generates a first clock signal and the first clock signal is a main clock signal provided for operation of the processing device. ... Hamilton Sundstrand Corporation

11/09/17 / #20170321973

Constant vapor velocity condenser

A condensing heat exchanger to exchange heat from a hot flow to a cold flow includes a hot flow side to receive the hot flow, the hot flow side including a hot flow inlet disposed on a hot flow inlet side and a hot flow outlet disposed on a hot flow outlet side, wherein a hot flow side cross section decreases from the hot flow inlet side to the hot flow outlet side, a cold flow side to receive the cold flow, and an interface disposed between the hot flow side and the cold flow side to allow thermal communication therebetween.. . ... Hamilton Sundstrand Corporation

11/09/17 / #20170321936

Gas-liquid phase separator

A device for separating gas and liquid from a mixture of gas and liquid phases includes a fluid guide member comprising a fluid inlet and a fluid outlet connected by a conduit configured as an elongated spiral disposed about an axis. A liquid coalescing medium is disposed on an exterior surface of the fluid guide radially outward from the elongated spiral conduit with respect to the axis. ... Hamilton Sundstrand Corporation

11/09/17 / #20170321722

Air cycle machine fan and compressor housing

A fan and compressor housing for an air cycle machine includes a fan inlet disposed around a center axis of the housing and having a fan inlet mounting flange, a compressor outlet having a compressor outlet mounting flange, and a compressor inlet having a compressor inlet mounting flange. The fan inlet mounting flange has a pinhole disposed thereon configured to receive a pin from a fan inlet diffuser housing and a fan inlet counterbore configured to receive a mating component from the fan inlet diffuser housing. ... Hamilton Sundstrand Corporation

11/09/17 / #20170321610

Anti-windmilling starter generator

An apu has a gas turbine engine and a starter generator to be selectively driven by the gas turbine engine. A sensor senses windmilling of components associated with the starter generator. ... Hamilton Sundstrand Corporation

10/26/17 / #20170310064

Electrical interconnect arrangements

An electrical interconnect arrangement for coupling a contactor with a bus bar includes a post, a bus bar connected electrically to the post, and a joint coupling the bus bar to the post. The joint has two or more interfaces defined between the post and the bus bar to reduce resistive heat generation within the electrical interconnect arrangement.. ... Hamilton Sundstrand Corporation

10/26/17 / #20170308441

System and method for managing single event latched (sel) conditions

A system and method to manage a single event latched (sel) condition, the method including operations to monitor, for a predetermined condition associated with single event latched (sel) states, a reset signal output from a watchdog device to a microprocessor, wherein the reset signal is responsive to a malfunction condition associated with the microprocessor. The method further includes operations to control provision of power to the microprocessor in response to detection of the predetermined condition.. ... Hamilton Sundstrand Corporation

10/26/17 / #20170307645

Rotary speed sensors

A speed detection device includes a comparator module, a sensor lead with a node connected to the comparator module, and a limit set module. The limit set module is connected to the sensor lead node and to the comparator by an upper limit lead and a lower limit lead to provide upper and lower limits to the comparator that vary according to amplitude variation in voltage applied to the sensor lead.. ... Hamilton Sundstrand Corporation

10/26/17 / #20170306851

Fusible link with coulomb damping

A link assembly between an engine and a gearbox includes a male link coupled to the engine or the gearbox, a female link coupled to the engine or the gearbox, wherein the female link receives the male link to allow translation of the male link relative to the female link and to form a radial interface, wherein the radial interface dampens translation of the male link relative to the female link, and a pin releasably coupled to the male link and the female link to selectively retain the male link and the female link.. . ... Hamilton Sundstrand Corporation

10/26/17 / #20170306790

Fuel systems for turbomachines

A fuel system for a turbomachine includes a minimum pressure and shutoff valve (mpsov) disposed between a fuel source and a fuel nozzle of a fuel system and configured to move between an opened position wherein fuel can flow to the fuel nozzle, and a closed position wherein fuel is prevented from flowing to the fuel nozzle, and a shutdown signal valve (sdsv) operatively connected to the mpsov and configured to selectively supply a shutdown pressure to the mpsov in a shutdown state such that the shutdown pressure forces the mpsov to the closed position.. . ... Hamilton Sundstrand Corporation

10/26/17 / #20170306786

Environmental control system utilizing a motor assist and an enhanced compressor

A system is provided. The system includes a first inlet providing a medium from a source; a compressing device in communication with the first inlet; and at least one heat exchanger. ... Hamilton Sundstrand Corporation

10/26/17 / #20170305560

Environmental control system utilizing multiple mix points for recirculation air in accordance with pressure mode and motor assist

A system is provided. The system includes an inlet providing a first medium; an inlet providing a second medium; a compressing device including a compressor and a turbine; a motor operating on an input power that is less than or equal to 0.5 kilowatts per pound per minute of the first medium compressed; and at least one heat exchanger located downstream of the compressor. ... Hamilton Sundstrand Corporation

10/26/17 / #20170305559

Environmental control system utilizing enhanced compressor

A system for an aircraft is provided. The system includes a compressing device and at least one heat exchanger. ... Hamilton Sundstrand Corporation

10/26/17 / #20170305558

Environmental control system utilizing two pass secondary heat exchanger and cabin pressure assist

A system is provided. The system includes an inlet providing a first medium; a compressing device comprising a compressor, and at least one heat exchanger located downstream of the compressor. ... Hamilton Sundstrand Corporation

10/26/17 / #20170305557

Environmental control system utilizing multiple mix points for recirculation air in accordance with pressure mode

A system is provided. The system includes an air conditioning pack; a first medium; a second medium; a first mixing point located outside the air conditioning pack and configured to mix the first medium with the second medium; and a second mixing point located inside the air conditioning pack and configured to mix the first medium with the second medium.. ... Hamilton Sundstrand Corporation

10/26/17 / #20170305556

Environmental control system utilizing bleed pressure assist

A system is provided. The system includes a first inlet providing a medium from a source, a compressing device in communication with the first inlet, and at least one heat exchanger. ... Hamilton Sundstrand Corporation

10/26/17 / #20170305532

Multi-slice rotary electromechanical actuator

A multi-slice electromechanical hinge-line rotary actuator includes a motor stator configured to generate rotational motion about a rotational axis. The multi-slice electromechanical hinge-line rotary actuator further includes a plurality of layers rotatably coupled to the motor stator. ... Hamilton Sundstrand Corporation

10/12/17 / #20170295672

Circuit breaker arrangements

A circuit breaker arrangement includes a housing, a contact seated in the housing, and a lead in electrical communication with the at least one contact and disposed outside the housing. The circuit breaker arrangement includes a heat sink in thermal communication with the lead to transfer heat between the contact and the lead.. ... Hamilton Sundstrand Corporation

10/12/17 / #20170295670

Immersion cooled electronic assemblies

An immersion cooled electronics arrangement includes a sealed housing, a coolant contained within the sealed housing, and an electronic device disposed within the sealed housing. The sealed housing has a variable-volume alterable between at least a first volume and a second volume in response to changes in pressure within the sealed chamber to reduce the rate of pressure change in the sealed housing over time form heating of the coolant.. ... Hamilton Sundstrand Corporation

10/12/17 / #20170295669

Circuit board assemblies

A circuit board arrangement includes a deflector configured to guide flow over an electronic component on a circuit board disposed in an air flow. A method for thermal management of a circuit board includes modifying an air flow over the circuit board to increase speed or direction the air flow over a component of the circuit board using a deflector.. ... Hamilton Sundstrand Corporation

10/12/17 / #20170294397

Die and substrate assembly with graded density bonding layer

A die and substrate assembly is disclosed for a die with electronic circuitry and a substrate. A sintered bonding layer of sintered metal is disposed between the die and the substrate. ... Hamilton Sundstrand Corporation

10/12/17 / #20170293710

Closed loop control and built-in test utilizing reduced order model

A system includes a plurality of sensors, a controller and a component. The plurality of sensors are configured to obtain sensed data indicative of characteristics of an environment. ... Hamilton Sundstrand Corporation

10/12/17 / #20170292872

Flow sensor bit for motor driven compressor

According to one embodiment, a computer-implemented method for prognostic for flow sensor is provided. The method includes receiving a first input, the first input related to an input power of a motor for driving a compressor, and receiving a second input, the second input related to a temperature differential of the compressor. ... Hamilton Sundstrand Corporation

10/12/17 / #20170292791

Spiral tube heat exchanger

A heat exchanger includes a first fluid pathway enclosed in a heat exchanger body to convey a first fluid through the heat exchanger body and a second fluid pathway enclosed in the heat exchanger body to convey a second fluid through the heat exchanger body and facilitate thermal energy exchange between the first fluid and the second fluid. The first fluid pathway and the second fluid pathway together are arranged in a spiral arrangement extending along a central axis of the heat exchanger.. ... Hamilton Sundstrand Corporation

10/12/17 / #20170292459

Fuel ecology system

A fuel ecology system includes a fuel ecology reservoir having a reservoir volume, includes a moveable barrier disposed within the reservoir volume, the movable barrier defining a first volume and a second volume within the reservoir volume, a fuel inlet port in fluid communication with the first volume, a fuel outlet port in fluid communication with the first volume, and a vent port in fluid communication with the second volume.. . ... Hamilton Sundstrand Corporation

10/12/17 / #20170292451

Dual pump fuel system with pump sharing connection

A fuel system for an aircraft includes a main pump, a servo pump, a servo minimum pressure valve, and a servo pump bypass connection element. The main pump receives fuel from a source. ... Hamilton Sundstrand Corporation

10/12/17 / #20170292447

Hybrid electric aircraft with rankine cycle heat recovery system

A propulsion system includes a gas turbine engine, an electric motor system having a motor drive electrically connected to the electric machine and an electric motor electrically connected to the motor drive where the electric motor drives a propulsion unit, an electric machine rotatably attached to the gas turbine engine and electrically connected to the electric motor system, an energy storage system having bi-directional electrical connections with the electric motor system and the electric machine, and an rankine cycle system in communication with the gas turbine engine for recovering waste heat from the gas turbine engine.. . ... Hamilton Sundstrand Corporation

10/12/17 / #20170292404

Turbine housing weld repair

A method for repairing a turbine housing of an air cycle machine is provided. The method comprises: removing damaged material from a journal bearing bore of the turbine housing; forming the journal bearing bore to an inner diameter of about 2.580±0.001 inches (6.553±0.003 centimeters). ... Hamilton Sundstrand Corporation

10/12/17 / #20170292193

Method for making corrosion resistant coating

A method for making an environmentally-safe chromium based corrosion resistant coating includes pre-treating a metal substrate, immersing the metal substrate in a trivalent chromium bath which does not contain hexavalent chromium, post-treating the coated metal substrate with an oxidizer, and curing the coated metal substrate in a controlled environment.. . ... Hamilton Sundstrand Corporation

10/12/17 / #20170291712

Hybrid electric aircraft propulsion incorporating a recuperated prime mover

A hybrid-electric propulsion system includes a gas turbine engine, an electric machine coupled to and rotatably driven by the gas turbine engine to produce ac electric power, an energy storage system, and a propulsion unit. The gas turbine engine includes a combustor and a recuperator that places an exhaust air flow that is downstream from the combustor in a heat exchange relationship with a compressed air flow that is upstream from the combustor to transfer thermal energy from the exhaust flow to the compressed flow. ... Hamilton Sundstrand Corporation

10/05/17 / #20170290205

Immersion cooling systems and methods

An electronics cooling arrangement includes a housing, an electronic device disposed within the housing, and a solid-liquid phase change material disposed within the housing and is in thermal communication with the electronic device to absorb heat generated by the electronic device. A method of cooling an electronic device and a vehicular electronics cooling system are also described.. ... Hamilton Sundstrand Corporation

10/05/17 / #20170290198

Immersion cooling systems and methods

An immersion cooled electronic arrangement includes a sealed housing, a coolant contained within the housing, and an electronic device submerged within the coolant. An agitator is disposed within the housing to control passive heat transfer between the electronic device and the coolant. ... Hamilton Sundstrand Corporation

10/05/17 / #20170283074

Aircraft air conditioning system including a thermoelectric device

A environmental control system (ecs) for an aircraft includes a primary heat exchanger configured to receive bleed air from a turbine compressor of the aircraft and a secondary heat exchanger having an input configured to receive a flow from the primary heat exchanger and a secondary heat exchanger output. The ecs also includes a thermoelectric condensing device having an input in fluid communication with the output of the secondary heat exchanger and also having a thermoelectric condensing device output.. ... Hamilton Sundstrand Corporation

10/05/17 / #20170282101

Pressure detection system immune to pressure ripple effects

A filter assembly for a fluid flow system includes a filter housing, a housing inlet to allow the fluid flow into the filter housing and a housing outlet to allow the fluid flow to exit the filter housing. A filter element is located in the filter housing to collect contaminants from the fluid flow. ... Hamilton Sundstrand Corporation

09/28/17 / #20170279250

Power distribution system

A power distribution system includes an electrical contactor arrangement. The electrical contactor arrangement includes a first contactor post, a first contactor lead, and a second contactor lead. ... Hamilton Sundstrand Corporation

09/28/17 / #20170276441

Heat exchangers

A heat exchanger includes a body, a plurality of first flow channels defined in the body, and a plurality of second flow channels defined in the body. The second flow channels are fluidly isolated from the first flow channels. ... Hamilton Sundstrand Corporation

09/21/17 / #20170268838

Pack-and-a-half architecture for environmental control systems

Environmental control system for aircraft are provided having a ram module having a primary heat exchanger and a secondary heat exchanger, a refrigeration module having an air cycle machine module and a condenser heat exchanger module, and at least one conduit fluidly connecting the ram module to the refrigeration module such that the ram module and the refrigeration module can be installed in two separate volumes of the aircraft.. . ... Hamilton Sundstrand Corporation

09/21/17 / #20170268837

Pack-and-a-half architecture for environmental control systems

Environmental control systems for aircraft including a ram module having a primary heat exchanger and a secondary heat exchanger, a refrigeration module having an air cycle machine module and a condenser heat exchanger, and a first altitude diverter valve operable from a first position wherein the primary and secondary heat exchangers operate in series and a second position wherein the primary and secondary heat exchanger operate in parallel. Air from the primary and secondary heat exchangers is provided to (i) the condenser heat exchanger when the primary and secondary heat exchangers operate in series and (ii) an aircraft cabin when the primary and secondary heat exchangers operate in parallel.. ... Hamilton Sundstrand Corporation

09/21/17 / #20170268810

Heat exchanger with integral bypass valve

Heat exchangers include a heat exchanger core defining at least two separate heat exchanger flow streams, a first header configured on the heat exchanger core and fluidly connected to a first of the separate heat exchanger flow streams, a second header configured on the heat exchanger core and fluidly connected to a second of the separate heat exchanger flow streams, and an integrated bypass system configured to directly fluidly connect the first header to the second header with a bypass conduit, the integrated bypass system having a control valve within the bypass conduit and configured to control flow through the bypass conduit.. . ... Hamilton Sundstrand Corporation

09/21/17 / #20170268696

Check valves

A check valve comprises a valve housing defining a valve opening and a pair of flapper elements pivotably mounted to the valve housing for rotation relative to the housing between an open position in which they permit fluid flow through the valve opening and a closed position in which they prevent fluid flow through the valve opening. Each flapper element comprises at least one bumper element arranged to engage a stop when in the open position, the bumper element comprising an elastically deformable tongue extending from an upper surface of the flapper element.. ... Hamilton Sundstrand Corporation

09/21/17 / #20170268681

Directional control valve

A directional control valve, comprising: a valve body having a bore to receive a spool; a spool mounted in said bore; at least one stopper mounted in said bore, said stopper being axially adjustable and fixable at a selected axial position. The provision of an axially adjustable stopper eliminates the need to select a suitably sized stopper from a selection of stoppers or to grind down (resize) a single stopper. ... Hamilton Sundstrand Corporation

09/21/17 / #20170268507

Gear pump

An embodiment of a gear pump arrangement includes a first gear defining a first set of teeth; and a second gear defining a second set of teeth, the first set of teeth and the second set of teeth being in meshed communication such that fluid is pumped in response to rotation of the first gear and the second gear, at least one of the first set of teeth and the second set of teeth having at least one gear tooth passageway through each tooth thereby fluidically connecting opposing faces of the tooth.. . ... Hamilton Sundstrand Corporation

09/21/17 / #20170268431

Engine bleed system with multi-tap bleed array

An engine bleed control system for a gas turbine engine of an aircraft is provided. The engine bleed control system includes a multi-tap bleed array including engine bleed taps coupled to a compressor source of a lower pressure compressor section before a highest pressure compressor section of the gas turbine engine. ... Hamilton Sundstrand Corporation

09/21/17 / #20170268430

Engine bleed system with turbo-compressor

An engine bleed control system for a gas turbine engine of an aircraft is provided. The engine bleed control system includes an engine bleed tap coupled to a fan-air source or a compressor source of a lower pressure compressor section before a highest pressure compressor section of the gas turbine engine and a turbo-compressor in fluid communication with the engine bleed tap. ... Hamilton Sundstrand Corporation

09/21/17 / #20170268423

Engine bleed system with motorized compressor

An engine bleed control system for a gas turbine engine of an aircraft is provided. The engine bleed control system includes an engine bleed tap coupled to a fan-air source or a compressor source of a lower pressure compressor section before a highest pressure compressor section of the gas turbine engine and a motorized compressor in fluid communication with the engine bleed tap. ... Hamilton Sundstrand Corporation

09/21/17 / #20170267377

Taxi tug with auxiliary power services

A taxi tug includes a chassis, a motive power source, and an auxiliary power services system. The chassis has at least one drive wheel. ... Hamilton Sundstrand Corporation

09/21/17 / #20170267359

Tandem air cycle machine module for environmental control systems

Tandem air cycle machine modules include a first air cycle machine having a first compressor and a first turbine, a second air cycle machine having a second compressor and a second turbine, and a structural manifold operably connected to both the first air cycle machine and the second air cycle machine.. . ... Hamilton Sundstrand Corporation

09/21/17 / #20170267328

Propeller pitch change actuation system

A yoke plate arrangement may comprise a yoke plate, a wear plate comprising a wear surface and a contact surface, wherein a post extends from the contact surface, and a yoke plate ear extending from the yoke plate in a radial direction, wherein a first aperture is disposed in the yoke plate ear, the post located at least partially within the first aperture, the contact surface being in contact with the yoke plate ear. The yoke plate arrangement may further comprise a retaining feature for coupling the wear plate to the yoke plate. ... Hamilton Sundstrand Corporation

09/14/17 / #20170261267

Auxilliary reservoir for a liquid system

A liquid system for circulating a liquid through a circulation loop includes a liquid pump, a primary liquid reservoir and an auxiliary liquid reservoir. The liquid pump pressurizes liquid within the circulation loop. ... Hamilton Sundstrand Corporation

09/14/17 / #20170261118

Flow limiter valve

A flow limiter valve assembly comprising a housing defined by an end cap and a guide base, a fluid inlet orifice provided in the base and a fluid outlet orifice in the circumferential wall of the housing, with a fluid flow path defined from the inlet orifice to the outlet orifice. The valve assembly further comprises a spool mounted in the base of the housing and arranged to be axially moveable relative to the housing end cap and biasing means to bias the spool away from the end cap. ... Hamilton Sundstrand Corporation

09/14/17 / #20170261116

Flapper and armature/flapper assembly for use in a servovalve

A flapper for use in a servovalve is described, the flapper comprising a first material and a second material, the first material having a first coefficient of thermal expansion and the second material having a second coefficient of thermal expansion and wherein the first and second coefficients of thermal expansion are different to each other. An armature/flapper assembly is also described, which comprises this flapper as well as a plate and a torsion bridge. ... Hamilton Sundstrand Corporation

09/14/17 / #20170261036

Bearing retention method and apparatus

A method of assembling a bearing assembly includes fitting a first ring onto a first end of a gear shaft. A second ring is fed into a slot in the first ring. ... Hamilton Sundstrand Corporation

09/14/17 / #20170261017

Ram air turbine actuator system

A ram air turbine control valve includes a sleeve, a spool, and a return housing. The sleeve defines a first exit port disposed proximate a first end of the sleeve and defines a second exit port disposed between the first exit port and the first end. ... Hamilton Sundstrand Corporation

09/14/17 / #20170260989

Fluid filtration using splines

A method for filtering a fluid that includes collecting contaminates in the fluid, passing the fluid from inside an internal cavity of a first shaft through a tight clearance at a spline connection between the first shaft and a second shaft such that the fluid is filtered of contaminates as a result of the tight clearance, and delivering the filtered fluid to a delivery location.. . ... Hamilton Sundstrand Corporation

09/14/17 / #20170260910

Two degree-of-constraint semi-fusible gearbox mounting link

A gearbox mounting link between a gas turbine engine structure and a gearbox mounting location comprises two engine attachment brackets secured to an engine structure, and attachment plate rotatably attached between the engine attachment brackets, and a secondary retention sleeve and fastener. The attachment plate includes a fusibly separable section configured to attach to the gearbox, a static section, and a shear necks connecting the statis section to the fusibly separable section. ... Hamilton Sundstrand Corporation

09/14/17 / #20170260909

One degree-of-constraint semi-fusible gearbox mounting link

A mounting link between a gas turbine engine and a gearbox comprises a gearbox arm, a fusibly breakable bolt, and two engine attachment brackets. The gearbox arm attaches to the gearbox, and extends along an axis defining a first dimension between the gas turbine engine structure and the gearbox. ... Hamilton Sundstrand Corporation

09/14/17 / #20170260908

One degree-of-constraint semi-fusible gearbox mounting link

A mounting link between an engine and a gearbox comprises an engine attachment piece, a gearbox attachment piece, and primary and secondary retention fasteners. The engine attachment piece is rotatably secured to the engine, and the gearbox attachment piece is rotatably secured to the gearbox. ... Hamilton Sundstrand Corporation

09/14/17 / #20170260907

Two degree-of-constraint semi-fusible gearbox mounting link

A gearbox mounting link between a gas turbine engine structure and a gearbox mounting location comprises an engine attachment piece rotatably secured to the gas turbine engine structure. The engine attachment piece comprises first and second plates extending in parallel planes and separated by a gap having a gap width. ... Hamilton Sundstrand Corporation

09/14/17 / #20170260906

Clevis link for toggle mechanism of ram air turbine actuator

A clevis for use in a toggle mechanism of a ram air turbine actuator is provided comprising a first side; a second side parallel to the first side; a first set of parallel pivot holes; second set of parallel pivot holes; a set of parallel through holes; and a helicoil blind hole. The second side rigidly connected to the first side via at least one brace perpendicular to the first side and the second side. ... Hamilton Sundstrand Corporation

09/14/17 / #20170259934

Cross rod for toggle mechanism of ram air turbine actuator

A cross rod for use in a toggle mechanism including a first section, a second section and a midsection between the first section and the second section. The midsection includes a flange having a through hole. ... Hamilton Sundstrand Corporation

09/14/17 / #20170259933

Ejection jack having a toggle assembly

A toggle assembly includes a first joint member having a first lug and a second lug, a second joint member, and a third joint member. The second joint member has a first arm that receives a first rolling element, a second arm that receives a second rolling element, a third arm, and a fourth arm. ... Hamilton Sundstrand Corporation

09/07/17 / #20170256354

Multiple parallel semiconductor switching system including current sharing filter inductor

A parallel semiconductor switching system includes an input filter circuit, a plurality of switching circuits, and a current-sharing filter inductor. The switching circuits receive the filtered voltage generated by the input filter circuit, and each switching circuit outputs a respective current. ... Hamilton Sundstrand Corporation

09/07/17 / #20170254335

Bearing free axial fan

An axial fan includes a rotatable fan blade assembly including a plurality of fan blades, and a plurality of permanent magnets affixed to the plurality of fan blades. A stationary guide channel is located radially outboard of the fan blade assembly. ... Hamilton Sundstrand Corporation

08/31/17 / #20170247117

Ram air turbine release mechanism with stroke amplification

A ram air turbine actuator release device to release a ram air turbine actuator includes a lock bolt releasably engaged to the ram air turbine actuator, a toggle including a toggle roller to engage the lock bolt, and a toggle pivot to couple the toggle to the ram air turbine actuator, a toggle actuator, including an actuation source, and a stroke amplifier, including a piston coupled to the actuation source, a first hydraulic chamber having a first diameter in fluid communication with the piston, a second hydraulic chamber having a second diameter in fluid communication with the first hydraulic chamber, and a plunger in fluid communication with the second chamber, wherein a diameter ratio between the first hydraulic chamber and the second hydraulic chamber amplifies a displacement of the actuation source to displace the plunger to rotate the toggle to disengage the toggle roller from the lock bolt.. . ... Hamilton Sundstrand Corporation

08/31/17 / #20170247116

Air separation module with increased permeate area

An air separation module includes a plurality of fibers located within a casing. A fiber membrane defines an exterior of each of the plurality of fibers. ... Hamilton Sundstrand Corporation

08/24/17 / #20170243413

Method for determining aircraft sensor failure without a redundant sensor and correct sensor measurement when redundant aircraft sensors give inconsistent readings

A computer implemented method to determine aircraft sensor failure and correct aircraft sensor measurement in an aircraft system is provide. The computer implemented method includes determining, using a physics-based high-fidelity model, a high-fidelity system response over operating conditions during which sensor drift of a sensor of interest can be detected, creating, using an aircraft system controller, a reduced order model (rom) using the high-fidelity system response, wherein the rom correlates with the sensor of interest when operating normally, calculating, using the rom, at least one reduced order sensor value, determining an error value between the reduced order sensor value and a sensor measurement reading from the sensor of interest, and comparing the error value to an error threshold, wherein the sensor of interest has failed when the error value is greater than the error threshold.. ... Hamilton Sundstrand Corporation

08/24/17 / #20170242956

Method of predicting heat exchanger blockage via ram air fan surge margin

A method and system for predicting heat exchanger blockage in an aircraft is provided. The method includes generating a reduced order model (rom) that predicts a ram air fan (raf) surge margin that correlates to a heat exchanger blockage parameter, calculating, using the rom, a predicted raf surge margin value using a sensor signal received from a sensor connected to a ram air fan (raf), calculating the heat exchanger blockage parameter using at least the predicted raf surge margin value, and reporting, to a user, the heat exchanger blockage parameter that indicates when a heat exchanger blockage condition is present.. ... Hamilton Sundstrand Corporation

08/24/17 / #20170241762

Tip clearance measurement system

A tip clearance measurement system (tcms) includes a probe and sensing circuitry. The probe directs microwave signals toward a turbine blade and receives microwave signals reflected by the turbine blade. ... Hamilton Sundstrand Corporation

08/24/17 / #20170241453

Ram air turbine hydraulic release mechanism

A ram air turbine actuator release device to release a ram air turbine actuator includes a lock bolt releasably engaged to the ram air turbine actuator, a toggle comprising a toggle roller to engage the lock bolt, and a toggle pivot to couple the toggle to the ram air turbine actuator, a hydraulic toggle actuator, including a piston defining a first hydraulic chamber and a second hydraulic chamber, a solenoid valve in fluid communication with the first hydraulic chamber, and a plunger coupled to the piston, wherein a pressure differential between the first hydraulic chamber and the second hydraulic chamber displaces the plunger to rotate the toggle to disengage the toggle roller from the lock bolt.. . ... Hamilton Sundstrand Corporation

08/24/17 / #20170241449

Jet pipe arrangement for a servo valve

A jet pipe arrangement for a servo valve, the jet pipe arrangement including a jet pipe, at least two receivers in operable communication with the jet pipe. The jet pip arrangement further includes an electromagnet in direct magnetic communication with the jet pipe such that, in use, the jet pipe is movable in response to changes in a magnetic field created by the electromagnet to distribute flow from the jet pipe asymmetrically between the at least two receivers.. ... Hamilton Sundstrand Corporation

08/17/17 / #20170234465

Oval o-ring groove

A fluid flow component has a fluid connection. The fluid connection has part circular end portions and extending side portions connecting the part circular end portions. ... Hamilton Sundstrand Corporation

08/17/17 / #20170234451

Backflow prevention valve

A valve assembly includes an outer housing having a first opening in fluid communication with a first fluid, a second opening in fluid communication with a second fluid, a third opening in fluid communication with a third fluid and a fourth opening in fluid communication with a fourth fluid. The valve assembly includes a piston configured to slide within the outer housing into a first position at which the third opening is blocked from fluid communication with the fourth opening based on a fluid pressure of the first fluid being greater than a fluid pressure of the fourth fluid. ... Hamilton Sundstrand Corporation

08/17/17 / #20170234354

Nut insert with reduced stress

A nut insert body includes an outer periphery and an aperture formed with threads. The threads are centered on a thread axis. ... Hamilton Sundstrand Corporation

08/17/17 / #20170234237

Gas turbine engine motoring variable frequency generator system for bowed rotor engine starts

An engine starting system for a gas turbine engine is provided. The engine starting system comprising: a gas turbine engine including rotational components comprising an engine compressor, an engine turbine, and a rotor shaft operably connecting the engine turbine to the engine compressor, wherein each rotational component is configured to rotate when any one of the rotational components is rotated; a variable frequency generator operably connected to at least one of the rotational components, the variable frequency generator being configured to rotate the rotational components; and a motor controller in electronic communication with the variable frequency generator, the motor controller being configured to command the variable frequency generator to rotate the rotational components at a selected angular velocity for a selected period of time.. ... Hamilton Sundstrand Corporation

08/17/17 / #20170234235

Electro-pneumatic gas turbine engine motoring system for bowed rotor engine starts

An engine starting system for a gas turbine engine is provided, the engine starting system comprising: a gas turbine engine including rotational components comprising an engine compressor, an engine turbine, and a rotor shaft operably connecting the engine turbine to the engine compressor, wherein each rotational component is configured to rotate when any one of the rotational components is rotated; an electro-pneumatic starter operably connected to at least one of the rotational components, the electro-pneumatic starter being configured to rotate the rotational components; an electric drive motor operably connected to the electro-pneumatic starter, the electric drive motor being configured to rotate the rotational components through the electro-pneumatic starter; and a motor controller in electronic communication with the electric drive motor, the motor controller being configured to command the electric drive motor to rotate the rotational components at a selected angular velocity for a selected period of time.. . ... Hamilton Sundstrand Corporation

08/17/17 / #20170234234

Gas turbine engine motoring system for bowed rotor engine starts

An engine starting system for a gas turbine engine is provided. The engine starting system comprising: a gas turbine engine including rotational components comprising an engine compressor, an engine turbine, and a rotor shaft operably connecting the engine turbine to the engine compressor, wherein each rotational component is configured to rotate when any one of the rotational components is rotated; a permanent magnet alternator operably connected to at least one of the rotational components, the permanent magnet alternator being configured to rotate the rotational components; and a motor controller in electronic communication with the permanent magnet alternator, the motor controller being configured to command the permanent magnet alternator to rotate the rotational components at a selected angular velocity for a selected period of time.. ... Hamilton Sundstrand Corporation

08/17/17 / #20170234229

Fuel drain system and method

An engine fuel system is disclosed for managing drainage of fuel in response to an engine shut-down condition. For normal operation, a piston of a piston assembly is maintained in a first position by pressurized fuel in a volume on a first side of the piston. ... Hamilton Sundstrand Corporation

08/17/17 / #20170233095

Aerodynamic control surface movement monitoring system

An actuator system for controlling a flight surface of an aircraft includes a first actuator having a first actuator input and a first linear translation element that moves based on rotational motion received at the first actuator input and a first sensor coupled to the first linear translation element that generates a first output based on a displacement of the first linear translation element. The system also includes a second actuator having a second actuator input and a second linear translation element that moves based on rotational motion received at the second actuator input and a second sensor coupled to the second linear translation element that generates a second output based on a displacement of the second linear translation element. ... Hamilton Sundstrand Corporation

08/17/17 / #20170232563

Nozzle with changeable press fit

A nozzle with changeable press fit and a method for calibrating a nozzle is described. The nozzle may be used in a nozzle/flapper type servovalve. ... Hamilton Sundstrand Corporation

08/10/17 / #20170229944

Speed detection circuits for permanent magnet alternators

A permanent magnet alternator (pma) includes a rotatable shaft, windings, a shunt regulator circuit, and a speed detection circuit. The rotatable shaft is connected electromagnetically to the windings. ... Hamilton Sundstrand Corporation

08/10/17 / #20170227590

High impedance arc fault detection

A motor controller circuit includes an electrical powertrain having a three phase input, a dc link and a three phase output, a controller including a processor and a memory, a first current sensor configured to sense a current at the three phase input, a second current sensor configured to sense a current at the three phase output, and a third sensor configured to sense a current at the dc link, and wherein the memory stores instructions configured to cause the processor to compare an operational model of the powertrain against a mathematical model of the powertrain and to detect a high impedance fault when a deviation between the operational model and the mathematical model exceeds a threshold.. . ... Hamilton Sundstrand Corporation

08/10/17 / #20170227303

Channel guide distributor

A channel guide distributor of a heat exchanger including a flanged body, a nozzle fluidly connected to the flanged body, a diffuser fluidly connected to the nozzle, a pin operably connected to the nozzle, a cone operably connected to the nozzle and a post removably connected to the flanged body and configured to receive the diffuser. The post having a tubular portion, an open end, a closed end, an inner surface, an outer surface, a post longitudinal axis, and twenty-four apertures in the tubular portion. ... Hamilton Sundstrand Corporation

08/10/17 / #20170227293

Counter spiral tube and shell heat exchanger

A heat exchanger has an outer shell enclosing an inner chamber and extending between a first inlet and a first outlet. The chamber receives a separating wall. ... Hamilton Sundstrand Corporation

08/10/17 / #20170227041

Sealant articles and method of applying sealant

A method of making an assembly is disclosed. According to the method, a curable sealant is applied to a metal surface of a first article, and the curable sealant and first article are stored under conditions to maintain the curable sealant in an at least partially uncured state. ... Hamilton Sundstrand Corporation

08/10/17 / #20170226926

Bleed valve module with position feedback and cooling shroud

A bleed valve control system for mounting to a support structure adjacent to a fan air plenum within an aircraft includes a bleed valve module, a pneumatic valve controller, and a fan air duct. The bleed valve module includes a pipe, a plurality of bleed valves connected to the pipe, and a plurality of pneumatic actuators connected to the bleed valves. ... Hamilton Sundstrand Corporation

08/03/17 / #20170222592

Reducing fault energy from an electric motor drive for a compressor

A system has an electric motor having a stator and a rotor. The rotor rotates with a shaft and the shaft drives a fluid rotor. ... Hamilton Sundstrand Corporation

08/03/17 / #20170222549

Dc-dc converter including dynamically adjusted duty cycle limit

A dc-dc converter including a dc input and a dc output, at least one switch connecting the dc input to a converter inductor, the converter inductor connecting the at least one switch to the dc output, a controller configured to control an open/closed state of the at least one switch, a first voltage sensor connected to the dc input and operable to provide a sensed voltage to the controller, a second voltage sensor connected to the dc output and operable to provide a sensed voltage to the controller. The controller includes a processor and a memory, the memory storing instructions for causing the controller to dynamically adjust a duty cycle limit of the dc-dc converter to be equal to one minus a numerator divided by a denominator, where the numerator is the instantaneous input voltage minus a compensation factor and where the denominator is the instantaneous output voltage.. ... Hamilton Sundstrand Corporation

08/03/17 / #20170219118

Bleed valve position sensor

A position sensor for a bleed valve with a piston, a valve disc, and a piston linkage to couple the piston and the valve disc, the position sensor includes a coil, and a core assembly, including a core disposed within the coil, a link retainer coupled to the piston, and a connecting rod coupled to the core and the link retainer.. . ... Hamilton Sundstrand Corporation

08/03/17 / #20170218883

Load relieving mechanism for electro-mechanical actuator

A thrust vector control actuator is provided including a ram, a first plate housed within the ram, a second plate housed within the ram, and a dividing wall housed within the ram. The dividing wall being located between the first plate and the second plate. ... Hamilton Sundstrand Corporation

07/27/17 / #20170214298

Wire-wound stator having phases with difference in temperature-responsive electrical resistance

A machine includes a rotor and a stator that is situated adjacent the rotor. The stator includes a plurality of wire-wound phases. ... Hamilton Sundstrand Corporation

07/27/17 / #20170211898

Heat exchanger with enhanced heat transfer

A heat exchange device includes a plurality of flow passages. Each flow passage has an inlet and an outlet configured for hot fluid flow in a direction from the inlet to the outlet. ... Hamilton Sundstrand Corporation

07/27/17 / #20170211896

Heat exchanger with center manifold

A heat exchange device includes a first section and a second section. Each of the first and second sections includes flow passages configured to cool fluid. ... Hamilton Sundstrand Corporation

07/27/17 / #20170211894

Heat exchanger with adjacent inlets and outlets

A heat exchange device includes a center manifold disposed between a first and second section, each of the first and second sections including flow passages configured for heat exchange between heat exchange fluid within the flow passages and fluid external of the flow passages. Each of the flow passages have a first end and a second end, and wherein adjacent ends of adjacent flow passages direct fluid flow in the same direction.. ... Hamilton Sundstrand Corporation

07/27/17 / #20170211889

High pressure counterflow heat exchanger

A heat exchanger including a plurality of heat exchanger plates in a stacked arrangement. At least two counterflow sections are positioned adjacent each other. ... Hamilton Sundstrand Corporation

07/27/17 / #20170211888

Heat exchanger with center manifold and thermal separator

A heat exchange device includes a first section and a second section. Each of the first and second sections include flow passages configured for heat exchange between hot fluid within the flow passages and cold fluid external of the flow passages. ... Hamilton Sundstrand Corporation

07/27/17 / #20170210490

Ram air turbine health monitoring system

A ram air turbine has a turbine having blades to be extended into an airflow adjacent to an aircraft. The turbine is operable to drive a power generation rotor. ... Hamilton Sundstrand Corporation

07/20/17 / #20170208705

Immersion cooling of power circuit

A cooling arrangement has a circuit board and a plurality of electronic components in operable communication with the circuit board. An enclosure is attached to the circuit board being configured to retain a fluid around at least one of the plurality of electronic components. ... Hamilton Sundstrand Corporation

07/20/17 / #20170207470

Electrochemical cell and method of operation

An electrochemical cell system and a method for operating an electrochemical cell is provided. The method including determining one of a power level, current level or a voltage level of the electrochemical cell, the electrochemical cell including at least one cell having an anode side and a cathode side, the electrochemical cell further having a water transport plate operably coupled to the cathode side. ... Hamilton Sundstrand Corporation

07/20/17 / #20170205794

Digital motor controller stability analysis tool

A computer-implemented method for performing stability analysis for a digital motor controller includes receiving a reference signal to be injected into a digital speed control loop and controlling, by a hardware description language (vhdl) component, the injection of the reference signal into the digital control loop through a field programmable gate array (fpga) hardware interface. The method also includes providing the reference signal to the digital speed control loop to determine a performance of the digital motor controller and receiving a feedback signal, at the fpga hardware interface, from the digital speed control loop based on the reference signal. ... Hamilton Sundstrand Corporation

07/20/17 / #20170205157

Thermal stress relief for heat sinks

A crossflow heat exchanger includes an outer housing, an inlet that receives a hot fluid to be cooled and a monolithic manifold includes a central receiving reservoir and one or more outer reservoirs. The fluid received at the inlet passing into the central receiving reservoir. ... Hamilton Sundstrand Corporation

07/20/17 / #20170205156

Heat exchangers

A method for manufacturing a heat exchanger includes aligning a plurality of first flow openings and second flow openings defined in a plurality of sheets, and attaching the plurality of sheets together to form a plurality of first flow channels from the aligned first flow openings and a plurality of second flow channels from the aligned second flow openings. Attaching the plurality of sheets together includes brazing the sheets together.. ... Hamilton Sundstrand Corporation

07/20/17 / #20170205149

Heat exchanger channels

A heat exchanger includes a heat exchanger body. A first set of flow channels is defined in the heat exchanger body extending axially with respect to a first flow axis, wherein the first set of the flow channels forms a first flow circuit. ... Hamilton Sundstrand Corporation

07/20/17 / #20170205146

Heat exchanger channels

A heat exchanger includes a heat exchanger body having a first end and a second end opposed to the first end along a flow axis. A plurality of flow channels is defined in the heat exchanger body extending axially with respect to the flow axis. ... Hamilton Sundstrand Corporation

07/20/17 / #20170205111

Drain hole orifice device

An environmental control system includes two environmental control system components with a duct extending between them. There is a drain in the duct including an orifice through the duct, a plenum in serial fluid communication with the orifice; and an orifice device removably connected to the duct, the orifice device including a second orifice in serial fluid communication with the plenum and the first orifice.. ... Hamilton Sundstrand Corporation

07/20/17 / #20170204985

Check valve

A check valve comprises a valve housing defining an unobstructed valve opening and a pair of flapper elements each having a proximal end and a distal end. The flapper elements are pivotally mounted to the valve housing at opposed sides of the valve opening at their proximal ends for pivotal movement between a closed position, in which together they block the flow of fluid through the valve opening and an open position in which they permit the flow of fluid through the valve opening. ... Hamilton Sundstrand Corporation

07/20/17 / #20170204984

Check valves

A check valve comprises a valve housing defining a valve opening, a pair of mounting posts arranged on opposed sides of the valve opening and a hinge pin mounted between the mounting posts. A pair of flapper elements are pivotably mounted to the hinge pin for rotation relative to the housing between an open position in which they permit fluid flow through the valve opening and a closed position in which they prevent fluid flow through the valve opening. ... Hamilton Sundstrand Corporation

07/20/17 / #20170204981

Check valves

A check valve comprises a valve housing defining a pair of valve openings, a pair of flappers pivotably mounted for rotation relative to the housing between an open position in which they permit fluid flow through the respective valve openings and a closed position in which they prevent fluid flow through the valve openings, and a stop pin extending across the valve such that the flappers will contact the stop pin in their open positions. Each flapper comprises a primary flapper element and a secondary flapper element, each pivotally mounted to a hinge pin extending across the valve. ... Hamilton Sundstrand Corporation

07/20/17 / #20170204950

Locking and unlocking mechanism for ram air turbine

A locking mechanism comprising a linkage assembly comprising a first link and a second link joined at a pivot point; a linkage assembly spring to bias the linkage assembly into a first, locked, position; a cam assembly having a cam 1 with a cam surface in engagement with the linkage assembly; a cam biasing member such as a spring arranged to bias the cam surface to press against the linkage assembly sufficiently to overcome the linkage assembly spring and to force the linkage assembly into a second, unlocked position; and a solenoid assembly arranged to engage the cam in a locked position in which the cam is prevented from forcing the linkage assembly into the unlocked position.. . ... Hamilton Sundstrand Corporation

07/20/17 / #20170204934

Magneto-rheologic damper for electromechanical actuator

A thrust vector control actuator is provided including a ram first portion, a ram second portion, the ram second portion housed within the ram first portion and defining a damper cavity between the ram first portion and the ram second portion and the ram second portion configured to operably connect to an output link, and a magneto-rheologic fluid located within the damper cavity, the magneto-rheologic fluid configured to rigidly connect the ram first portion and the ram second portion in a first state, the magneto-rheologic fluid being solid in the first state, and a second state wherein the ram second portion is moveable relative to the ram first portion and the magneto-rheologic fluid is at least partially liquefied.. . ... Hamilton Sundstrand Corporation

07/20/17 / #20170204882

Turbine pump assembly with gas purged centrifugal impeller shrouds

Turbine pump assemblies and methods of making the same are provided. The assemblies includes a body, a centrifugal pump having a shroud located within the body, a shroud cavity formed external to the shroud, and a purge gas flow path formed within the body and fluidly connecting a purge gas source to the shroud cavity.. ... Hamilton Sundstrand Corporation

07/20/17 / #20170204874

Outlet housing for cabin air compressor

An outlet housing for an aircraft cabin air compressor includes a volute comprising radially inner and outer portions, and having first, second, third, and fourth circumferential regions. The first circumferential region is between the fourth and second circumferential region. ... Hamilton Sundstrand Corporation

07/20/17 / #20170204873

Weld repair for cabin air compressor housing

A method for repairing a cabin air compressor outlet housing includes removing a journal bearing support sleeve in a cabin air compressor outlet housing, positioning a cylindrical insert within the cabin air compressor outlet housing, wherein the cylindrical insert has an outer diameter greater than an outer diameter of at least one portion of the removed journal bearing support sleeve, an inner diameter less than an inner diameter of at least one portion of the removed journal bearing support sleeve, and a length greater than a length of the removed journal bearing support sleeve, welding the cylindrical insert to the cabin air compressor outlet housing, and machining the welded cylindrical insert to form a replacement journal bearing support sleeve.. . ... Hamilton Sundstrand Corporation

07/20/17 / #20170204867

Weld repair for an air cycle machine compressor housing

A method for repairing an air cycle machine compressor housing includes removing a journal bearing support sleeve in an air cycle machine compressor housing, positioning a cylindrical insert within the air cycle machine compressor housing, wherein the cylindrical insert has an outer diameter greater than an outer diameter of at least one portion of the removed journal bearing support sleeve, an inner diameter less than an inner diameter of at least one portion of the removed journal bearing support sleeve, and a length greater than a length of the removed journal bearing support sleeve, welding the cylindrical insert to the air cycle machine compressor housing, and machining the welded cylindrical insert to form a replacement journal bearing support sleeve.. . ... Hamilton Sundstrand Corporation

07/20/17 / #20170204865

Emergency shutdown system for turbine pump assembly

A turbine pump assembly includes a centrifugal pump including an inlet cavity with an inlet pressure, a control section having a turbine flow rate control spool valve, a shut off biasing mechanism located at a first end of the control section, and an inlet pressure piston located at a second end of the control section, and an inlet pressure fluid line fluidly connecting the inlet cavity with the inlet pressure piston. When the inlet pressure is above a predetermined threshold, the inlet pressure is configured to maintain the turbine flow rate control spool valve in an operational mode. ... Hamilton Sundstrand Corporation

07/20/17 / #20170204863

Turbine pump assembly with vacuum purged centrifugal impeller shrouds

Turbine pump assemblies and methods of making the same are provided. The assemblies include a body, a centrifugal pump having a shroud located within the body, a shroud cavity formed external to the shroud, and an ejector pump fluidly connected to the shroud cavity by a purge gas flow path, the ejector pump configured to reduce a pressure within the shroud cavity.. ... Hamilton Sundstrand Corporation

07/20/17 / #20170203853

Locking and unlocking mechanism

A locking mechanism for releasably locking a lock bolt against axial movement includes a solenoid assembly arranged, in use, in proximity to an axially moveable lock bolt. The solenoid assembly includes: a solenoid, a solenoid bias spring and a solenoid plunger having a plunger tip. ... Hamilton Sundstrand Corporation

07/20/17 / #20170203845

Low pressure pack

A duct is provided and includes a tubular member having an inlet portion, an outlet portion and a central portion interposed between the inlet and outlet portions and a tributary tubular member fluidly coupled to the tubular member at the central portion. The tributary tubular member includes first and second torus sectors defining first and second apertures, respectively, through which an upstream end of the central portion extends. ... Hamilton Sundstrand Corporation

07/20/17 / #20170203705

Combined remote sensing, processing, and solid state power control system

A single-unit aerospace remote sensing and solid state power controller may include a processing module, a remote data concentrator (rdc) module in communication with the processing module, and configured to receive analog or discrete or discrete input comprising load sensor information and translate the analog or discrete input into a protocol operable by the processing module. The single-unit aerospace remote sensing and solid state power controller may further include a solid state power controller in communication with the rdc and the processing module, configured to receive load sensor information from the rdc module and control at least one load mechanism based on the load sensor information.. ... Hamilton Sundstrand Corporation

07/13/17 / #20170202084

Tolerance compensating circuit board lever

A control module comprises a motherboard and at least one circuit board removably connected to the motherboard. There is at least one lever connected to the removable circuit board. ... Hamilton Sundstrand Corporation

07/13/17 / #20170202068

Solid state power controller for aerospace led systems

A light emitting diode (led) control system may include a led control system for an aircraft. The led control system may include an led power controller, and a solid state power controller (sspc) that includes a processor in communication with the led power controller, where the led power controller and the solid state power controller are integrated onto a single power module. ... Hamilton Sundstrand Corporation

07/13/17 / #20170201195

Control of large electromechanical actuators

A method of operating an electromechanical actuator (ema) system includes determining a command time remaining for an actuator to attain a commanded position and determining a stop time required to stop movement of the actuator. The command time is compared to the stop time, and an electric motor driving the actuator is decelerated if the stop time is equal to or greater than the command time. ... Hamilton Sundstrand Corporation

07/13/17 / #20170199728

Spreadsheet tool manager for collaborative modeling

According to an embodiment of the present invention, a computer-implemented method for collaborative management of a plurality of modeling tools is described. The method may include receiving, via a processor, a modeling tool request from a user for a modeling tool configured to operate in a spreadsheet application, determining, via an inventory manager, whether a tool record exists matching the modeling tool request, building, via a tool creation module, a new modeling tool configured to operate in the spreadsheet application responsive to determining that a tool record does not exist, and updating, via the inventory manager, a tool record in an inventory database if a tool record does not exist that matches the modeling tool request.. ... Hamilton Sundstrand Corporation

07/13/17 / #20170198990

Heat exchangers

A counter-flow heat exchanger comprising a heat exchanger core including an inner wall and an outer wall radially outward and spaced apart from the inner wall. A first flow path is defined within the inner wall and a second flow path is defined between the inner wall and the outer wall. ... Hamilton Sundstrand Corporation

07/13/17 / #20170198989

Tubes and manifolds for heat exchangers

A heat exchanger includes a manifold defining a longitudinal axis, wherein the manifold includes an interior configured for a flow of heat exchange fluid therethrough. A plurality of heat exchanger tubes are connected in fluid communication with the interior of the manifold for exchanging heat exchange fluid with the interior of the manifold. ... Hamilton Sundstrand Corporation

07/13/17 / #20170198988

Vanes for heat exchangers

A heat exchanger includes a vane positioned between an inlet and an outlet of a heat exchanger manifold. The vane includes a leading edge proximate the inlet and a trailing edge proximate the outlet. ... Hamilton Sundstrand Corporation

07/13/17 / #20170198979

Heat exchangers

A heat exchanger includes a body made of polymer, a plurality of first flow channels defined in the body, and a plurality of second flow channels defined in the body. The second flow channels fluidly isolated from the first flow channels. ... Hamilton Sundstrand Corporation

07/13/17 / #20170198978

Heat exchangers

A heat exchanger includes a body, a plurality of first flow channels defined in the body, and a plurality of second flow channels defined in the body, the second flow channels fluidly isolated from the first flow channels, wherein at least one of the first flow channels or the second flow channels have a changing characteristic along a direction of flow within the first flow channels or the second flow channels.. . ... Hamilton Sundstrand Corporation

07/13/17 / #20170198977

Heat exchangers

A heat exchanger includes a body, a plurality of first flow channels defined in the body; and a plurality of second flow channels defined in the body. The second flow channels are fluidly isolated from the first flow channels. ... Hamilton Sundstrand Corporation

07/13/17 / #20170198976

Heat exchangers

A heat exchanger includes a body and a plurality of elliptical flow channels defined in the body, the elliptical flow channels defining an elliptical cross-sectional flow area, and a plurality of non-elliptical flow channels defined in the body and interspersed between the elliptical flow channels, the non-elliptical flow channels having a non-elliptical cross-sectional flow area.. . ... Hamilton Sundstrand Corporation

07/13/17 / #20170198859

Support bracket

A support bracket includes a body, an arm, a first mount, a boss, and a second mount. The arm extends laterally from the body and a first fastener opening passes through the arm. ... Hamilton Sundstrand Corporation

07/13/17 / #20170198694

Gears and gear pumps

A gear pump includes a drive gear with drive gear teeth and a driven gear with driven gear teeth. The drive gear is rotatably disposed about a drive gear axis. ... Hamilton Sundstrand Corporation

07/13/17 / #20170198693

Gear pump

A pump includes first and second gears coupled to one-another for rotation about respective axis. The first gear may include a concentrically disposed first hub portion and a plurality of first teeth radially projecting and circumferentially spaced about the first hub portion. ... Hamilton Sundstrand Corporation

07/13/17 / #20170198668

Fuel control system

A fuel control system includes a high pressure relief valve fluidly connected to a fuel pump outlet. The high pressure relief valve includes a closure and a nozzle. ... Hamilton Sundstrand Corporation

07/13/17 / #20170198641

Air turbine starter with lubrication valve

An air turbine starter includes a transfer tube having a lubrication inlet and a lubrication outlet configured to allow fluid to flow therethrough. A valve is positioned within the transfer tube including a spring. ... Hamilton Sundstrand Corporation

07/13/17 / #20170197704

Position sensor for electromechanical actuator

An electromechanical actuator includes a ground arm, an output arm rotatable about an axis of rotation relative to the ground arm and a position sensing arrangement to determine an angular position of the output arm relative to the ground arm. The position sensing arrangement includes a position sensor fixed at the ground arm. ... Hamilton Sundstrand Corporation

07/13/17 / #20170197249

Additive manufacturing method

A method of making an article is disclosed involving determining a plurality of patterns of discrete sections for a plurality of layers of fusible material. According to the method, the patterns are determined having section boundaries that avoid alignment with section boundaries of other layer patterns among the plurality of patterns according to criteria specified for the article. ... Hamilton Sundstrand Corporation

07/13/17 / #20170197248

Contour scanning for additive manufacturing process

A method of making an article is disclosed in which a fusible material is fused with an energy beam applied to the fusible material at a build location with a scanning pattern comprising a plurality of parallel lines terminating at the contoured edge. An energy beam is also applied with a vector scanning pattern at the build location along the contoured edge to liquefy and re-solidify material at the build location along the contoured edge. ... Hamilton Sundstrand Corporation

07/06/17 / #20170191863

Economical environmental control system (ecs) smart venturi

A matched venturi assembly is provided and includes a venturi component configured to provide for fluid communication between an inlet and an outlet, sensors coupled to the venturi component and configured to generate readings of characteristics of fluid flows proceeding through the venturi component and a venturi controller, which is receptive of the readings from the sensors. The venturi controller is configured to interpret the readings and is trimmable in a test phase where fluid flows with known characteristics are flown through the venturi component and interpretations of the readings are calibrated in accordance with differences between the readings and the known characteristics.. ... Hamilton Sundstrand Corporation

07/06/17 / #20170191559

Tuned rat driveshaft

A driveshaft for an aircraft ram air turbine, the driveshaft including a cylindrical body having an outer surface, an inner surface, a longitudinal axis, a first end section, a second end section opposite the first end section, and an elongated intermediate section connecting the first end section and the second end section. The outer surfaces of the elongated intermediate section includes at least three separate grooves initiating at a location proximate to the first end section and extending parallel to the longitudinal axis across the outer surface to a location proximate to the second end section, the grooves being separated equidistantly around a circumference of the outer surface. ... Hamilton Sundstrand Corporation

07/06/17 / #20170191499

Fan shroud

A fan shroud for an air cycle machine includes a tubular body extending axially between a first end and a second end of the shroud along a center axis of the fan shroud. A flange extends radially outward from the tubular body of the shroud at the first end of the shroud. ... Hamilton Sundstrand Corporation

07/06/17 / #20170191497

Fan and compressor housing

A fan housing for an air cycle machine includes a fan exit flow passage and a ring disposed around a center axis of the fan housing and disposed around the fan exit flow passage. The ring includes a first end disposed axially opposite a second end and a guide surface facing radially inward relative the center axis and formed between the first end and the second end. ... Hamilton Sundstrand Corporation

07/06/17 / #20170191422

Ecology fuel return systems

A shut-off valve includes a float and a negative g control component. The float is configured to occlude a tank outlet at a first fluid level and 1 g and unocclude the tank outlet at a second fluid level and 1 g. ... Hamilton Sundstrand Corporation

07/06/17 / #20170190427

Flow duct for a ram outlet header

A flow duct able to be connected to a ram outlet header includes a band having an annular shape and a glove connected to the band. The glove can include a first end that is annular in shape and connected to the band, a body that is curved and has a substantially u-shaped cross section with a first opening, and a second end that has a substantially u-shaped cross section and a second opening that is an extension of the first opening.. ... Hamilton Sundstrand Corporation

06/29/17 / #20170184170

Integrated torque limiter/no-back device

An integrated torque limiter/no-back device for use in an actuator with an input shaft, an output, and a gear reduction. The device includes an input ramp, an output ramp coupled to the gear reduction, a combined ramp disposed between the input ramp and the output ramp, a first plurality of balls arranged between the input ramp and the combined ramp, a second plurality of balls arranged between the combined ramp and the output ramp, a pin, and a brake. ... Hamilton Sundstrand Corporation

06/22/17 / #20170180069

Host-to-host test scheme for periodic parameters transmission in synchronized ttp systems

A system for testing synchronous ttp communication networks is provided. The system includes a first and second nodes coupled to a transmission bus. ... Hamilton Sundstrand Corporation

06/22/17 / #20170179800

Concentric dual rotor electric machine

A multi-rotor electric machine includes a first rotor, a stator, and a second rotor. The stator is disposed concentric with the first rotor and is disposed radially outward from the first rotor. ... Hamilton Sundstrand Corporation

06/22/17 / #20170179551

Thermal management for electrical storage devices

An energy storage system includes a sealed housing defining an interior space and a plurality of cells arranged within the interior space of the housing. A cooling liquid submerges each of the cells. ... Hamilton Sundstrand Corporation

06/22/17 / #20170176148

Lightweight ballistic enclosure

An enclosure includes an enclosure body having an enclosure cavity, the enclosure body formed from a first material, and at least one ballistic tolerant plate disposed within the enclosure cavity to form a plurality of channel enclosures within the enclosure cavity, the at least one ballistic tolerant plate formed from a ballistic tolerant material.. . ... Hamilton Sundstrand Corporation

06/22/17 / #20170175748

Thermal enhancement of cabin air compressor motor cooling

A cabin air compressor assembly includes a cabin air compressor, and a cabin air compressor motor operably connected to the cabin air compressor. The cabin air compressor motor includes a rotor and a stator having a plurality of end windings. ... Hamilton Sundstrand Corporation

06/22/17 / #20170175679

Hydraulic pump systems

A pump system includes a turbine shaft including a turbine disposed thereon to rotate the turbine shaft at a turbine shaft speed due to fluid flow through the turbine, a centrifugal pump directly connected to the turbine shaft and configured to pump hydraulic fluid at the turbine shaft speed, a bleed port disposed downstream of the centrifugal pump, and a valve configured to be fluidly connected to the bleed port and configured to meter flow to the turbine to regulate the turbine shaft speed at least partially as a function of pressure from the bleed port.. . ... Hamilton Sundstrand Corporation

06/22/17 / #20170174348

Environmental control system

A method of controlling an outlet temperature of a heat exchanger of an aircraft includes operating an air cycle machine at a first operating speed. The air cycle machine is operatively coupled to an air cycle machine bypass valve at a first position. ... Hamilton Sundstrand Corporation

06/22/17 / #20170174347

Cabin supply duct

A cabin supply duct of an air conditioning and temperature control system including a first tubular body having an inlet, an outlet, an inner surface, an outer surface, and a longitudinal axis. A diameter of the inner surface at the first inlet being about 8.404±0.002 inches (21.346±0.005 centimeters). ... Hamilton Sundstrand Corporation

06/22/17 / #20170174085

Permanent magnet synchronous generator based direct current power generating system

A method of compensating for rotor position error of a rotor of a permanent magnet synchronous generator (pmg) that provides electrical power to a direct current (dc) power generating system, the method including obtaining pmg phase voltages and resolver processed angular position output when the pmg is driven by a prime mover. Once obtained, a pmg fundamental phase voltage waveform is selected by eliminating higher order harmonics. ... Hamilton Sundstrand Corporation

06/15/17 / #20170170494

Integrated fuel cell aircraft pressurization and cooling system

According to one embodiment of this disclosure an integrated fuel cell and environmental control system includes a turbo-compressor. The turbo-compressor includes a rotatable shaft, a compressor rotatable with the shaft to generate a flow of compressed air, a motor connected to the shaft, and a turbine connected to the shaft. ... Hamilton Sundstrand Corporation

06/15/17 / #20170167632

Check valves

A check valve comprises a valve housing defining a valve opening and a pair of flapper elements pivotably mounted relative to the housing for rotation between an open position in which they permit fluid flow through the opening and a closed position in which they prevent fluid flow through the opening. Each flapper element comprises a first surface facing the opening and a second surface opposite the first surface and facing away from the opening. ... Hamilton Sundstrand Corporation

06/15/17 / #20170167620

Check valves

A check valve comprises a valve housing defining a valve opening and a web extending across the valve opening. First and second mounting posts are provided on the valve housing on opposite sides of the opening and extend away from the opening. ... Hamilton Sundstrand Corporation

06/15/17 / #20170167618

Check valve

A check valve comprises a valve housing defining an opening and a plurality of flapper elements each having a proximal end and a distal end, the flapper elements being pivotally mounted to the valve housing at their proximal ends for pivotal movement between a closed position, in which they block the flow of fluid through the opening and an open position in which they permit the flow of fluid through the opening. Each flapper element is generally triangular or trapezoidal in shape such that the flapper elements create a generally conical or frustoconical shape when in the closed position.. ... Hamilton Sundstrand Corporation

06/15/17 / #20170167541

Bearing thermal management system and method

A system for managing a temperature of at least one bearing in an air cycle machine includes an inlet for allowing cooling air to enter the air cycle machine, at least one bearing downstream from the inlet and in fluidic connection with the inlet, an outlet downstream from the at least one bearing and in fluidic connection with the at least one bearing, a temperature sensor at a point between the inlet and the outlet, and an electronic controller electrically connected to and receiving temperature data from the temperature sensor with the electronic controller configured to modify an operation of the air cycle machine depending on the temperature data.. . ... Hamilton Sundstrand Corporation

06/15/17 / #20170167533

Foil bearing with large radius key

A gas bearing within a cylinder is provided. The gas bearing comprises an anti-rotation tab sitting within a key way of the cylinder. ... Hamilton Sundstrand Corporation

06/15/17 / #20170167392

Ecology system ejector pump shutoff valve

An ecology system includes an ecology tank, a check valve, a shutoff valve, and an ejector pump. The check valve is fluidly connected to the ecology tank and is configured to allow flow from the ecology tank. ... Hamilton Sundstrand Corporation

06/15/17 / #20170167390

Fuel control system

A bypass valve for a fuel control includes a sleeve, a spool, and a biasing member. The sleeve has a body extending between a first end and a second. ... Hamilton Sundstrand Corporation

06/15/17 / #20170167293

Thrust bearing assembly with flow path restriction

A bearing assembly includes a shaft and a thrust runner attached to the shaft. The shaft runner protrudes radially outward from the shaft. ... Hamilton Sundstrand Corporation

06/15/17 / #20170167292

Variable-sized cooling air flow path

A cooling air flow path through an air cycle machine can include an inlet, at least one bearing downstream from the inlet and in fluidic connection with the inlet, an outlet downstream from the at least one bearing and in fluidic connection with the at least one bearing, and an adjustment device downstream from the at least one bearing and in fluidic connection with the at least one bearing and the outlet with the adjustment device configured to vary a flow of cooling air through the flow path by adjusting the cross-sectional area of the flow path.. . ... Hamilton Sundstrand Corporation

06/15/17 / #20170167037

Electrochemical gas separator for combustion prevention and suppresion

An inert gas generating system includes an air source configured to provide an air stream that comprises at least one of ram air, external air, conditioned air, or compressed air. An electrochemical gas separator is configured to receive the air stream and to produce an oxygen-depleted air stream. ... Hamilton Sundstrand Corporation

06/15/17 / #20170167036

Solid oxide electrochemical gas separator inerting system

An air inert gas generating system consists of heat exchangers, a heating element, and a plurality of solid oxide electrochemical gas separator (soegs) cells. The soegs cells are interconnected in series to create a stack. ... Hamilton Sundstrand Corporation

06/08/17 / #20170163114

Motor-generator with multiple stator windings

A motor-generator includes a stator disposed along a centerline including a stator pole, a first stator winding and a second stator winding, wherein the first stator winding is wound on the stator pole and the second stator winding is wound on the stator pole, and at least one rotor axially disposed from the stator along the centerline.. . ... Hamilton Sundstrand Corporation

06/08/17 / #20170163087

Dual-source power supply

A power supply for providing power to a load includes an alternating current (ac) power supply having a positive output and a negative output connected to a common ground; a direct current (dc) power supply connected to a same common ground as the ac power supply; a rectifier connected to an output of the ac power supply and the common ground that converts ac power to dc power an provides to an output of the power supply; a connection control circuit coupled between the dc power supply and the output that connects the dc power supply to the output when the ac power supply is inactive.. . ... Hamilton Sundstrand Corporation

06/08/17 / #20170163030

Shared transient voltage suppressor having built-in-test capability for solid state power controllers

Embodiments are directed to a lightning protection circuit configured for use in a solid state power controller (sspc) having at least one feed line and a plurality of load lines. The lightning protection circuit includes a shared transient voltage suppressor and a transient isolator communicatively coupled to the shared transient voltage suppressor. ... Hamilton Sundstrand Corporation

06/08/17 / #20170163028

Power distribution unit and method of containing arc faults in power distribution units

A method of containing arc faults in a power distribution unit includes in response to a bus bar temperature exceeding a bus bar temperature threshold, thermally opening a conductive element extending between an energizing coil of a contactor, a bus bar, and a controller. The controller is configured to selectively open and close the contactor. ... Hamilton Sundstrand Corporation

06/08/17 / #20170160760

Model predictive control optimization for power electronics

Embodiments are directed to a model predictive control for power electronics. The model predictive control includes a plurality of switching matrices defining potential states of a plurality of power converter switches of a multi-level power converter and a control. ... Hamilton Sundstrand Corporation

06/08/17 / #20170159796

Vented gear spline lubrication

A gearbox assembly includes an outer housing and a gear box shaft at least partially disposed in the outer housing. The gear box shaft includes an interior region and a reservoir dam that separates the interior region into a reservoir volume and a spline volume. ... Hamilton Sundstrand Corporation

06/08/17 / #20170159795

Vented gear spline lubrication

A gear box assembly includes an outer housing and a gear box shaft at least partially disposed in the outer housing. The gear box shaft includes an interior region, a reservoir dam that separates the interior region into a reservoir volume and a spline volume and one or more gear box shaft venting holes formed through the gear box shaft near an end thereof. ... Hamilton Sundstrand Corporation

06/08/17 / #20170159714

Bearing liners for use within light alloy housings

A device with a rotating element includes a housing body formed from a light alloy, wherein the housing body has a housing body thermal expansion coefficient, a bearing liner formed from a liner material disposed within the housing body, wherein the bearing liner has a bearing liner thermal expansion coefficient, and a bearing to support the rotating element with an outer race, wherein the bearing has a bearing thermal expansion coefficient, the outer race is press fit within the bearing liner, and the bearing liner thermal expansion coefficient is lower than the bearing thermal expansion coefficient.. . ... Hamilton Sundstrand Corporation

06/08/17 / #20170159661

Centrifugal pump with integrated axial flux permanent magnet motor

A pump system comprises a fluid housing, a permanent magnet rotor, and an electric stator. The fluid housing has an axis, an axial inlet, and a radially outer outlet. ... Hamilton Sundstrand Corporation

06/08/17 / #20170158344

Unlocking apparatus for a ram air turbine actuator

An apparatus for unlocking an actuator comprises a first member mounted in a housing for longitudinal movement along an axis. A recess is formed in a surface of the first member. ... Hamilton Sundstrand Corporation

06/08/17 / #20170157722

Cross flow ceramic heat exchanger and method for manufacturing

A heat exchanger includes a first additively manufactured layer including axial fins extending in a first direction and transverse fins extending in a second direction transverse to the first direction, the first layer defining a flow path in the first direction. The heat exchanger also includes a second additively manufactured layer including axial fins extending in the second and transverse fins extending in the first direction, the second layer defining a second flow path in the second direction.. ... Hamilton Sundstrand Corporation

06/08/17 / #20170157621

Electromechanical water separator

A water separator comprises an axially extending airflow passage, an airflow mixer, a plurality of electric plates of alternating charge, and a mechanical separator. The airflow mixer, the plurality of electric plates, and the mechanical separator are disposed within the airflow passage. ... Hamilton Sundstrand Corporation

06/01/17 / #20170155244

Transient voltage suppressor having built-in-test capability for solid state power controllers

Embodiments are directed to a transient protection circuit configured for use in a sspc having a plurality of power channels. The transient protection circuit includes a shared transient voltage suppressor, and a shared protection line communicatively coupled to the shared transient voltage suppressor. ... Hamilton Sundstrand Corporation

06/01/17 / #20170152166

Catalytic oxidation of aqueous organic contaminants

A method of treating water to oxidize organic contaminants comprises heat transfer system includes heating liquid water to a temperature of at least 190° f. At a pressure to keep the heated water in a liquid phase, and contacting the heated water with oxygen and an oxidation catalyst including a noble metal on a porous support comprising a bi-modal pore size distribution including pore sizes from 1 nm to 20 nm and pore sizes from 100 nm to 1000 nm. ... Hamilton Sundstrand Corporation

05/18/17 / #20170141625

Electric component including custom metal grain orientation

An electrical device includes an electromagnetic component configured to generate a magnetic flux. The electromagnetic component includes a soft magnetically-conductive material configured to pass magnetic flux therethrough along a flux path. ... Hamilton Sundstrand Corporation

05/18/17 / #20170140861

Constant force, short-stroke electromagnetic actuator

An electromagnetic actuator includes first winding and second windings passing through a first core and a second core, respectively. The first and second cores are arranged such that the first and second core slots form a gap their respective cores between the first and second windings and the first and second permanent magnets and the first and second core slots have a slot opening width (a), the first and second magnets have a magnet height (h) measured along the central axis that the first and second cores have a core height (h) measured along the central axis and h>a; h>h; and h−h<0.5 h.. ... Hamilton Sundstrand Corporation

05/18/17 / #20170137141

Automated control using simulated signals

A method for controlling a vehicle is provided. The method includes generating a digital control signal, generating a digital simulated signal based on the control signal, the digital simulated signal simulating one of a mechanical or analog input signal, converting the digital simulated signal into an analog signal, and controlling a control device of the vehicle using the analog signal.. ... Hamilton Sundstrand Corporation

05/18/17 / #20170137114

Aircraft control system and method

An aircraft control system includes a propeller shaft assembly. Also included is first rotor operatively coupled to the propeller shaft assembly, the first rotor having a first plurality of blades mounted thereto, the first blades disposed at a substantially identical nominal pitch during rotation of the first rotor, the first rotor rotatable in a first direction. ... Hamilton Sundstrand Corporation

05/18/17 / #20170136704

Additive manufacturing quality control systems

A method includes receiving torque data of a powder recoater operatively connected to an additive manufacturing system. The torque data includes torque data of the recoater when the recoater traverses a build area. ... Hamilton Sundstrand Corporation

05/18/17 / #20170136702

Additive manufacturing quality control systems

A method includes receiving an image from an optical imaging device disposed in operative communication with an additive manufacturing machine, wherein the image includes at least part of a build area of the additive manufacturing machine, determining a reflectance of at least a portion the build area based on the image to create reflectance data, and determining a quality of one or more of an additive manufacturing process and/or product based on the reflectance data. The method can further include converting the image to greyscale if the image is not in greyscale.. ... Hamilton Sundstrand Corporation

05/18/17 / #20170136695

Additive manufacturing quality control systems

A method includes receiving torque data of a powder recoater operatively connected to an additive manufacturing system. The torque data includes torque data of the recoater when the recoater traverses a build area. ... Hamilton Sundstrand Corporation

05/11/17 / #20170133120

Isolation structures for electrical systems

A nanocomposite structure includes a nanocomposite. The nanocomposite includes a bulk matrix phase and a nanophase filler disposed within the bulk matrix phase. ... Hamilton Sundstrand Corporation

05/11/17 / #20170131034

Heat exchanger

A heat exchanger is disclosed including an array of interlaced conduits. The conduit array includes a first plurality of conduits connected to a first inlet header at one end of the first plurality of conduits and to a first outlet header at an opposite end of the first plurality of conduits. ... Hamilton Sundstrand Corporation

05/04/17 / #20170126159

Generation system with braking mechanism

An electrical power generation system for a vehicle includes a prime mover, an electrical generator to generate electrical power and a gear box operably connected to the prime mover and the electrical generator to transfer rotational energy from the prime mover to the electrical generator. A braking mechanism is located at the gear box to selectably transfer rotational energy from the prime mover to the electrical generator for selective generation of electrical power. ... Hamilton Sundstrand Corporation

05/04/17 / #20170126158

Doubly stator-fed synchronous generator

According to an aspect of the disclosure herein, a generator is provided herein. The generator includes a rotor that further includes a plurality of slots. ... Hamilton Sundstrand Corporation

05/04/17 / #20170123448

Actuator locking mechanism

An apparatus for unlocking an actuator, such as a rat actuator includes a first member; and a second member movable between a blocking position in which said second member is engaged with said first member so as to block movement of said first member and an unblocking position in which said second member is disengaged from said first member so that movement of the first member is not blocked. The first member is an arm arranged such that in the blocking position it is disposed between said second member and a lock release element of said actuator.. ... Hamilton Sundstrand Corporation

05/04/17 / #20170122328

Hydraulic pump systems

A pump system includes a turbine shaft including a turbine disposed thereon to rotate the turbine shaft at a turbine shaft speed due to fluid flow through the turbine and a centrifugal pump directly connected to the turbine shaft and configured to pump hydraulic fluid at the turbine shaft speed. The pump system also includes a speed reduction system operatively connected to the turbine shaft and configured to have an output speed less than the turbine shaft speed and a valve operatively connected to the speed reduction system that is configured to operate at the output speed. ... Hamilton Sundstrand Corporation

04/27/17 / #20170117786

Flux control of permanent magnet electric machine

A permanent magnet electric machine includes a rotor including a plurality permanent magnets arranged around a central shaft and supported in an outer member and a stator surrounding the rotor and arranged to allow the rotor to turn within in inner diameter of it. The rotor includes one or more flux control elements disposed within the output member and moveably attached to the central shaft that move from an initial position when the rotor is rotating at a first rate and to a second position closer to the permanent magnets when the rotor is operating at a second rate, greater than the first rate.. ... Hamilton Sundstrand Corporation

04/27/17 / #20170117776

Laminated stator with cooling lamination layers

A laminated stator for a motor includes a first plurality of stator laminations with a first electrical conductivity and a first thermal conductivity, and a second plurality of stator laminations with a second electrical conductivity and a second thermal conductivity, wherein the second electrical conductivity is lower than the first electrical conductivity, the second thermal conductivity is higher than the first thermal conductivity, and the second plurality of stator laminations are disposed throughout the first plurality of stator laminations.. . ... Hamilton Sundstrand Corporation

04/27/17 / #20170115072

Heat exchangers

A baffle for a shell and tube heat exchanger comprises a one piece helical flight extending from a central core. The helical flight has a plurality of aligned openings for receiving tubes of the heat exchanger. ... Hamilton Sundstrand Corporation

04/27/17 / #20170115065

Heat exchangers

A heat exchanger includes a first half defining a first inlet portion and a first outlet portion, a second half defining a second inlet portion and a second outlet portion. The first half and the second half are configured to mate and form an inlet chamber and an outlet chamber. ... Hamilton Sundstrand Corporation

04/27/17 / #20170114905

Blind retaining ring for valve piston

A piston includes a main body extending between a first end and a second end along a center axis of the piston. The main body further includes a chamber formed within the main body, the chamber having an opening disposed at the first end of the main body. ... Hamilton Sundstrand Corporation

04/27/17 / #20170113253

Powder removal

A method includes issuing a state change fluid into an internal passage of an additively manufactured article and causing the state change fluid to change from a first state having a first viscosity to a second state that is either solid or has a second viscosity that is higher than the first viscosity within the internal passage. The method can also include causing the state change fluid to change back from the second state to the first state and flushing the state change fluid from the internal passage to remove residual powder from the additively manufactured article.. ... Hamilton Sundstrand Corporation

04/27/17 / #20170113242

Rake systems for additive manufacturing systems

A cap for an additive manufacturing recoater rake includes a clip portion defining a slot configured to receive a side edge portion of a recoater rake, and an angled surface extending from the clip portion. The angled surface is configured to contain powder pushed by the recoater rake on the powder bed.. ... Hamilton Sundstrand Corporation

04/20/17 / #20170110876

Bidirectional current limiter

Embodiments are directed to a current limiter having an inrush limiting stage and a discharge limiting stage. The inrush limiting stage is communicatively coupled in series with the discharge limiting stage. ... Hamilton Sundstrand Corporation

04/20/17 / #20170108164

Cabin air compressor outer bracket

A support bracket includes a base including a first hole and a back plane perpendicular to the base. The support bracket also includes three or more connecting surfaces extending outwardly from a right side of the back plane and a mounting tab extending perpendicularly from an outer surface of the third connecting surface and having a mounting tab hole having a diameter formed therein. ... Hamilton Sundstrand Corporation

04/20/17 / #20170108163

Cabin air compressor outer bracket

A support bracket includes a base including a first hole and a backplane perpendicular to the base. The support bracket also includes three or more connecting surfaces extending outwardly from a left side of the back plane and a mounting tab extending perpendicularly form an outer surface of the third connecting surface and having a mounting tab hole having a diameter formed therein. ... Hamilton Sundstrand Corporation

04/20/17 / #20170108107

Flex spline for use with a compound harmonic generator

A method and system providing a flex spline for a compound harmonic generator having a harmonic wave generator, a primary ring gear, and a secondary ring gear, includes a primary flex spline with a first number of primary teeth, the primary flex spline driven by the harmonic wave generator and in meshed contact with the primary ring gear, and at least one secondary flex spline with a second number of secondary teeth, the at least one secondary flex spline driven by the harmonic wave generator and in meshed contact with the secondary ring gear, wherein the at least one secondary flex spline rotates independently from the primary flex spline.. . ... Hamilton Sundstrand Corporation

04/20/17 / #20170108031

Turbine thrust shaft for air bearing cooling

A turbine thrust shaft providing a thrust disk having a surface p and a surface q, and a shaft body formed through the thrust disk, the shaft body including a first plurality of holes, wherein the first plurality of holes are spaced apart and each hole of the first plurality of holes has a first diameter between 0.0600 inches to 0.0680 inches and has a first center disposed a first distance between 0.1400 inches to 0.1600 inches from surface p, and a second plurality of holes wherein the second plurality of holes are spaced apart and each hole of the second plurality of holes has a second diameter between 0.0960 inches to 0.1040 inches and has a second center disposed a second distance between 2.1350 inches to 2.1550 inches from surface q.. . ... Hamilton Sundstrand Corporation

04/20/17 / #20170108005

Housing for air cycle machine compressor

A housing of an air cycle machine compressor is provided. The housing includes a body defining an aperture therethrough and one or more bosses located circumferentially around the body, the body having a general wall thickness. ... Hamilton Sundstrand Corporation

04/20/17 / #20170108001

Fan rotor blade having an optimized blade root

A fan rotor blade extending radially from a hub is described. The fan rotor blade may include first surface and a second surface, where the first surface and second surfaces are respectively defined by a set of x-coordinates, y-coordinates and z-coordinates. ... Hamilton Sundstrand Corporation

04/20/17 / #20170107993

Air cycle machine compressor housing

An air cycle machine (acm) compressor housing includes a body including an exterior surface and an interior portion. An inlet is integrally formed with the body. ... Hamilton Sundstrand Corporation

04/20/17 / #20170107855

Bypass housing in air cycle machine

A turbine bypass housing is provided. The housing includes a body having an inlet end and an outlet end and defining an interior, an outlet flange is configured at the outlet end and has a rim diameter, and an inlet flange is configured at the inlet end and has a flange thickness. ... Hamilton Sundstrand Corporation

04/20/17 / #20170106984

Ram air heat exchanger

A heat exchanger to exchange heat between a ram air flow and a liquid flow includes a plurality of ram air layers that direct air, wherein each ram air layer is a single pass layer including a plurality of ram air fins in fluid communication with the ram air flow, and a plurality of liquid pass layers, wherein each liquid pass layer is a five pass layer including a plurality of liquid pass fins in fluid communication with the liquid flow, and each of the plurality of liquid pass layers is disposed adjacent to at least one ram air layer of the plurality of ram air layers.. . ... Hamilton Sundstrand Corporation

04/20/17 / #20170106498

Method of manufacturing an actuator assembly component and method of verifying surface finish

A method of manufacturing an actuator assembly component is provided. The method includes tumble polishing the actuator assembly component. ... Hamilton Sundstrand Corporation

04/20/17 / #20170106469

Ultrasonic additive manufacturing assembly and method

In one aspect, an assembly is provided. The assembly includes a substrate having a top surface and an inner wall, the inner wall defining a cavity, and at least one metal foil layer ultrasonically welded to the substrate top surface using an ultrasonic additive manufacturing process. ... Hamilton Sundstrand Corporation

04/13/17 / #20170104387

Variable stroke linear electrodynamic machine

An electrodynamic machine is disclosed that includes a magnetic field generator and an armature in a linear moving relationship with each other along a first axis. A swash plate rotates about a second axis parallel to and offset from the first axis. ... Hamilton Sundstrand Corporation

04/13/17 / #20170102722

Temperature adjusting valve, a turbine pump assembly and method of adjusting flow through a valve

A temperature adjusting valve includes, a first member made of a first material having a first coefficient of thermal expansion, a second member made of a second material having a second coefficient of thermal expansion that is in operable communication with the first member, and a flow passageway at least partially defined by a distance between a first surface of the first member and a second surface of the second member, the first coefficient of thermal expansion and the second coefficient of thermal expansion are selected such that a flow area of the flow passageway changes in response to changes in temperature of at least one of the first member and the second member the distance also is adjustable independently of temperature changes of the first member and the second member.. . ... Hamilton Sundstrand Corporation

04/13/17 / #20170102083

Valve assembly for variable frequency generator and method of sealing

A valve assembly for a variable frequency generator includes an input shaft extending about a longitudinal axis and having a bore defined therein. Also included is a disconnect shaft extending about the longitudinal axis and disposed in abutment with the input shaft. ... Hamilton Sundstrand Corporation

04/13/17 / #20170101194

Splined muff

A splined muff is provided for use with a ram air turbine (rat). The splined muff includes a body formed of plastic material that acts as an insulator during a lightning strike. ... Hamilton Sundstrand Corporation

04/06/17 / #20170099014

Systems and methods for controlling inverters

A method of controlling an inverter includes receiving output voltage target waveforms for phases of an inverter, generating uncompensated midpoint duty cycle waveforms for the inverter phases, selecting an uncompensated midpoint duty cycle waveform for one of the inverter phases based on the magnitudes of the uncompensated midpoint duty cycle waveforms, and applying a compensation signal to the selected uncompensated midpoint duty cycle waveform. An inverter controller and inverter employ the method for generating switch command signals for solid-state switch devices of the inverter.. ... Hamilton Sundstrand Corporation

04/06/17 / #20170098987

Line start permanent magnet brushless motor

A line start permanent magnet (lspm) brushless motor includes a stator, a rotor assembly disposed in the central opening defined by the stator. The rotor assembly includes a magnet unit and a rotor. ... Hamilton Sundstrand Corporation

04/06/17 / #20170098978

Venting generator assemblies

A generator assembly includes a generator shaft defining an interior vent space. A valve assembly is positioned within the vent space configured to selectively allow venting of air through the generator shaft. ... Hamilton Sundstrand Corporation

04/06/17 / #20170098504

Multilayer capacitor with integrated busbar

Embodiments are directed to obtaining a specification of at least one operational requirement for at least one capacitor, generating a design of the at least one capacitor to satisfy the at least one operational requirement, the design of the at least one capacitor comprising a plurality of layers and a first integrated busbar coupled to at least a portion of the layers, and based on the design, manufacturing the at least one capacitor by utilizing an additive manufacturing technique.. . ... Hamilton Sundstrand Corporation

04/06/17 / #20170097180

Heat transfer tubes

A heat transfer tube includes a tube wall defining a central axis in a lengthwise direction of the tube. The tube wall includes a fluid inlet and fluid outlet for directing a coolant into and out of the tube. ... Hamilton Sundstrand Corporation

04/06/17 / #20170096291

Aerosol/solvent delivery nozzles

A delivery nozzle for aerosol and solvent includes a nozzle body defining an aerosol passage and a solvent passage therethrough. The aerosol and solvent passages each extend from an inlet end of the nozzle body to an outlet end thereof. ... Hamilton Sundstrand Corporation

04/06/17 / #20170096239

Duty cycle-based bit interface system

A duty cycle-based bit interface system includes a first stage voltage converter and second stage voltage converter in signal communication with the first stage voltage converter. The first stage voltage converter converts a digital voltage signal into an analog voltage signal. ... Hamilton Sundstrand Corporation

03/30/17 / #20170093051

Wire lug captivation system and method

A wire lug captivation system includes a bolt having a head, a shank adjacent the head and a threaded portion, the shank having a diameter that is smaller than a diameter of the threaded portion. The system also includes a captivation device including an upper portion, a lower portion and a connecting member that joins the upper and lower portions, the captivation device configured to receive a wire lug between the upper portion and the lower portion and including a threaded hole in the upper portion having diameter that is greater than the diameter of the shank.. ... Hamilton Sundstrand Corporation

03/30/17 / #20170092449

Current managed drive system for energizing contactors and other coil-based external loads

The disclosure herein relates to a current managed drive system for utilizing a current output to engage and hold a contactor. The current managed drive system includes the contactor comprising a single coil that has a momentary high pull-in current and a low hold current and a contactor coil drive configured to control the current output to the contactor to match the momentary high pull-in current to engage the contactor and the low hold current to hold the contactor.. ... Hamilton Sundstrand Corporation

03/30/17 / #20170089338

Coupling shaft for gear pump

A method of lubricating a coupling shaft of a gear pump includes communicating lubricant from a first gear stage along a first splined end section of the coupling shaft and through a first slot in a first radial shoulder of the coupling shaft, and also communicating lubricant from a second gear stage along a second splined end section of the coupling shaft and through a second slot in a second radial shoulder of the coupling shaft. The first radial shoulder is axially spaced from the second radial shoulder by an axial distance sa along an axis of rotation of the coupling shaft. ... Hamilton Sundstrand Corporation

03/30/17 / #20170087525

Systems and methods for gas disposal

A discharge system includes a mixing vessel and a feedstock input in fluid communication with the mixing vessel. A solvent input is in fluid communication with the mixing vessel. ... Hamilton Sundstrand Corporation

03/30/17 / #20170087521

Systems and methods for gas disposal

A method for controlling the saturation level of gas in a liquid discharge includes obtaining temperature and pressure measurements of a solvent in a mixing vessel and obtaining a pressure measurement of a source feedstock in a feedstock tank, correlating the temperature and pressure measurements of the solvent to baseline data to generate a theoretical uptake rate for the source feedstock into the solvent and a theoretical flow rate of the source feedstock into the mixing vessel, and determining a required opening setting for a feedstock valve in the feedstock input line in order to achieve a desired liquid displacement in the mixing vessel. The method includes determining an uptake duration and achieving an uptake displacement equivalent to the reverse of the desired liquid displacement. ... Hamilton Sundstrand Corporation

03/23/17 / #a power connector assembly includes a connector housing and a plurality of receptacles defined in the connector housing. each of the receptacles defines a keyed interface profile such that each interface profile is adapted to individually couple to a respective feeder connector. each one of the receptacles has an interface profile different from the other interface profiles.

Hamilton Sundstrand Corporation

. . ... Hamilton Sundstrand Corporation

03/23/17 / #20170085161

Starting current reduction in induction motors

A rotor of an induction motor includes a shaft, a ferromagnetic rotor core, first and second inductors axially bracketing the rotor core, and a rotor cage. The shaft extends along a stator axis, and the rotor core is disposed coaxially about the shaft. ... Hamilton Sundstrand Corporation

03/23/17 / #20170085077

Systems and methods for dissipating transient voltages in electrical systems

A solid-state power controller (sspc) includes two or more sspc channels for connecting a load to a feed bus. The sspc channels include a disconnect switch and an enable switch having a terminal connected to a gate of the disconnect switch. ... Hamilton Sundstrand Corporation

03/23/17 / #20170084414

Fault protection devices and methods for power systems

A power system includes a direct current (dc) channel connected to a high-voltage direct current (hvdc) bus, an hvdc bus ground fault protection device connected to the hvdc bus, and a dc channel ground fault protection device connected to the dc channel. The hvdc bus ground fault protection device is operatively associated with the dc channel ground protection fault device through the dc channel to cause the dc channel ground fault protection device to disconnect the dc channel from the hvdc bus based on a comparison of current imbalance in the dc channel with a dc channel current imbalance threshold when the hvdc bus ground fault protection device determines that current leakage from the hvdc bus exceeds a current leakage threshold of the hvdc bus.. ... Hamilton Sundstrand Corporation

03/23/17 / #20170082325

Thermoelectric cooling system

A method and system to transfer heat using a cooling medium includes a first cold plate, including a first fluid flow path in thermal communication with a first thermal region of the first cold plate, and a second fluid flow path in fluid communication with the first fluid flow path and in thermal communication with a second thermal region of the first cold plate, and a thermoelectric heat exchanger in thermal communication with the first thermal region of the first cold plate.. . ... Hamilton Sundstrand Corporation

03/23/17 / #20170082213

Flexures for flow regulation devices

A flexure includes a flexure body with an inner ring defining a main axis and an outer ring extending about the inner ring that is outboard of the inner ring with respect to the main axis. One or more flexure members having respective lengths that are greater than a radial offset distance defined between the inner ring and the outer ring connects the inner ring to the outer ring. ... Hamilton Sundstrand Corporation

03/23/17 / #20170082205

Integrated bypass valve with pressure, position, and flowrate feedback capabilities

A bypass valve includes a housing for directing fluid flow through the bypass valve. A disc is positioned within the flow path having an inner perimeter and an outer perimeter. ... Hamilton Sundstrand Corporation

03/23/17 / #20170082204

Metering devices

A fluid metering valve includes a flow circuit defined by the valve and a valve member disposed in the flow circuit, the valve member having a sealing portion and configured to be moved by a solenoid between a closed position and one or more open positions. The valve includes a seat member defining one or more fluid outlets, the seat member configured to receive the sealing portion in the closed position to seal the fluid outlets, and an internal porting path defined through the sealing portion that is configured to fluidly connect a downstream side of the sealing portion with an upstream portion of the flow circuit in the closed position to reduce the effective pressure area of the valve member.. ... Hamilton Sundstrand Corporation

03/23/17 / #20170082203

Vented lift off seal assemblies

A seal assembly includes a first sealing ring defining a plurality of circumferentially spaced depressions configured to form a lift off seal with the first sealing ring rotating and to prevent leakage radially with the first sealing ring at rest. At least one ventilation channel extends from a respective edge of one of the depressions to an edge of the first sealing ring and is configured to relieve pressure with the first sealing ring at rest. ... Hamilton Sundstrand Corporation

03/23/17 / #20170081040

Heat exchanger and cooling system for generator electronics cooling

A system includes a heat exchanger, a first heat source disposed along a first circuit, and a second heat source disposed along a second circuit. The heat exchanger includes a first core defining a first flow path through the heat exchanger and along the first circuit and a second core defining a second flow path through the heat exchanger and along the second circuit that is parallel to the first flow path. ... Hamilton Sundstrand Corporation

03/23/17 / #20170081017

Hybrid torque limiting rotary no-back device

A rotary device assembly is provided and includes an input shaft coupled to a torque generating device, an output shaft and a rotary device disposed to transmit first torque from the input shaft to the output shaft and configured with no-back capability to prevent second torque applied to the output shaft from being transmitted to the input shaft in an event the second torque deceeds a torque-limiting threshold and the no-back capability and torsional lock-up capability to prevent an overload of the torque generating device in an event the second torque exceeds the torque-limiting threshold.. . ... Hamilton Sundstrand Corporation

03/23/17 / #20170080496

Powered removal for element formed by powder bed fusion additive manufacturing processes

A method for forming a part includes: forming a first portion of the part at a first level; forming a second portion of the part at a second level; wherein forming the first and second portions includes exposing the first and second levels to a sintering process and portions of the first and second levels to an electron beam; causing a magnetorheological (mr) fluid to move into a passage inside the first and second portions; exposing the first and second portions to a magnetic field causing motion of particles in the mr fluid to move and break up sintered material in the passage; and removing some or all of the sintered material in the passage.. . ... Hamilton Sundstrand Corporation

03/16/17 / #20170076877

Contactor body with integral heat sink

An electrical contactor assembly is provided including an electrical contactor positioned within a contactor housing, an electrical bus bar, and a post constructed from an electrically and thermally conductive material connected to the bus bar. At least one lead is coupled to the electrical contact and to the post. ... Hamilton Sundstrand Corporation

03/16/17 / #20170076862

Heat transfer in magnetic assemblies

A magnetic assembly includes a winding and a housing disposed about the winding. The housing includes an interior surface contoured to conform to the winding to facilitate heat transfer between the winding and the housing. ... Hamilton Sundstrand Corporation

03/16/17 / #20170074168

Topologies and methods for turbine engine start inverters

A start inverter for an electric engine start scheme includes an inverter phase leg with solid-state switches and a pulse width modulator operatively connected to the solid-state switches of the inverter phase leg. The pulse width modulator provides command signals to the solid-state switches of the inverter phase leg to invert direct current into alternating current with less ripple than a start inverter with two solid-state switches per phase leg.. ... Hamilton Sundstrand Corporation

03/09/17 / #20170070056

Power control current sharing circuit

A load balancing circuit comprising a first power source, a first field effect transistor (fet) device having a drain terminal connected to the first power source and a source terminal connected to a first node, a first resistor connected to the first node and a second node, a load connected to the second node, a second fet device having a drain terminal connected to the first node and a source terminal connected to the second node, a third fet device having a collector terminal connected to a gate terminal of the first fet device and an emitter terminal connected to the second node, and a second resistor connected to a base terminal of the third fet device and the first node.. . ... Hamilton Sundstrand Corporation

03/09/17 / #20170070046

Capacitor based lightning clamp

A circuit comprises an alternating current (ac) feed line, a solid state power controller portion connected to the ac feed line, a load connected to the solid state power controller portion, a positive clamp rail, a negative clamp rail, a ground, a first diode connected to the ac feed line and the positive clamp rail, a second diode connected to the ac feed line and the negative clamp rail, a third diode connected to the load and the positive clamp rail, a fourth diode connected to the load and the negative clamp rail, a fifth diode connected to the positive clamp rail and the ground, a sixth diode connected to the negative clamp rail and the ground, and a capacitor connected to the positive clamp rail and the negative clamp rail.. . ... Hamilton Sundstrand Corporation

03/09/17 / #20170067461

Pump cover

A cover with a center axis for a pump assembly includes a plate. A center hole is formed in the plate and positioned on the center axis of the cover. ... Hamilton Sundstrand Corporation

03/09/17 / #20170067460

Pump sleeve

A pump sleeve includes a tubular body extending from a first end to a second end along a center axis. A first hole is formed in the tubular body and is positioned axially on the tubular body between the first end and the second end. ... Hamilton Sundstrand Corporation

03/09/17 / #20170067367

Pump gear

An integrated drive generator includes an input shaft and an input drive gear connected to the input shaft. The integrated drive generator also includes an input driven gear meshed with the input drive gear. ... Hamilton Sundstrand Corporation

03/02/17 / #20170058777

Thermoelectric cooled torque motor

A valve system includes a valve, a valve controller, a thermoelectric cooler, and a controller. The valve is configured to open and close a control device in response to a working fluid. ... Hamilton Sundstrand Corporation

02/23/17 / #20170055382

Mounting devices

An apparatus for mounting electronic components includes a linear actuator defining a longitudinal axis. A driver member is engaged to the linear actuator for motion along the longitudinal axis. ... Hamilton Sundstrand Corporation

02/23/17 / #20170054265

Thermal management systems

A thermal management system for removing excess heat from a heat source includes a condenser and an evaporator fluidly connected together within a cooling loop. A phase change material is positioned within the condenser. ... Hamilton Sundstrand Corporation

02/23/17 / #20170053526

Sensor and control systems for electrical machines

A system for detecting sensor failure and/or operating with a failed sensor in an electrical machine includes an electrical machine, three or more sensors configured to connect to the electrical machine, and a sensor module operatively connected to each sensor to receive sensor signals from the sensors. The sensor module includes a failure detection module operatively connected to each sensor and configured to determine if each sensor is a failed sensor or a functioning sensor. ... Hamilton Sundstrand Corporation

02/23/17 / #20170052921

Integrated input/output connector

An active input/output connector includes a first printed circuit board and a second printed circuit board enclosed within a housing. A first plug is in electronic communication with the first printed circuit board. ... Hamilton Sundstrand Corporation

02/16/17 / #20170047152

Solenoid actuators and solenoid actuated devices

An electromagnetic solenoid actuator includes a ferromagnetic core body defining an axis, a winding supported by the core body, and a ferromagnetic plunger body translatable within the core body along the axis. The core body has a fixed height gap that extends about the axis and the plunger body and core body define between one another a variable height gap that extends about the axis. ... Hamilton Sundstrand Corporation

02/16/17 / #20170045313

Heat exchanger and fabrication

A method for making a heat exchanger assembly is described, involving generating a digital model of a heat exchanger assembly that comprises a heat exchanger core within a housing. The digital model is inputted into an additive manufacturing apparatus or system comprising an energy source. ... Hamilton Sundstrand Corporation

02/16/17 / #20170045309

High temperature flow manifold

A manifold including a body defining a chamber configured to receive a fluid, the body having a plurality of apertures passing therethrough and a plurality of channels engaged in the apertures and configured to receive the fluid from the chamber, each of the plurality of channels having an end defining an inlet that is in fluid communication with the chamber. Each channel defines a standoff defining a portion of the channel that is not in contact with the body such that the inlet is separated from the body by a standoff distance along the length of the channel and the standoff distance is a distance that is one or more times a hydraulic diameter of the inlet.. ... Hamilton Sundstrand Corporation

02/16/17 / #20170045155

Heat exchanging valve arrangement

A heat exchanging valve arrangement includes, a manifold defining a chamber, a first passageway, a second passageway, a third passageway, and a fourth passageway, and a member movable relative to the manifold configured to define fluidic communication between the first passageway and the second passageway when in a first position and between the first passageway and the third passageway when in a second position, fluid is flowable into the chamber through the fourth passageway such that fluid is exposed to surfaces of the member regardless of whether the member is in the first position or the second position.. . ... Hamilton Sundstrand Corporation

02/16/17 / #20170045129

Drive assembly with selective disconnect

A drive assembly with selective disconnect includes a motor with a motor drive shaft; a harmonic drive coupled to one end of the motor drive shaft; an output shaft coupled to the harmonic drive; and a retracting mechanism that selectively retracts the motor drive shaft axially to decouple the motor drive shaft from the harmonic drive.. . ... Hamilton Sundstrand Corporation

02/09/17 / #20170042017

Heat pipe embedded heat sink with integrated posts

An apparatus includes a heat sink and a post that supports the heat sink that is monolithically formed with the heat sink. The apparatus can further include a printed wiring board attached to a top side of the heat sink with electronic components attached to the printed wiring board, a plurality of posts integrated into a bottom side of the heat sink and extending outwards from the heat sink, wherein the heat sink and the plurality of posts are monolithically formed, and a heat pipe attached to the bottom side of the heat sink with a first end near an electronic component and a second end near one of the plurality of posts.. ... Hamilton Sundstrand Corporation

02/09/17 / #20170038225

Differential motion sensor

An electromechanical differential motion sensor is disposed to detect transverse motion of a first piece relative to a second piece. The sensor includes a base anchored to the first piece, a lever arm that engages the second piece, a hinge, a retention mechanism, and a fuse wire. ... Hamilton Sundstrand Corporation

02/09/17 / #20170037863

Anti-icing impeller spinner

An impeller spinner for a fuel pump can include a head and a shank. The head can have a base at one end and a tip at an opposite end. ... Hamilton Sundstrand Corporation

02/09/17 / #20170036770

Electric compressor for use with a wing anti-ice system

A method and system providing an airflow to a wing anti-ice system includes receiving an airflow from an outside air supply, compressing the airflow via an electric compressor, controlling a temperature of the airflow from the electric air compressor via a heat exchanger in fluid communication with the electric compressor and the wing anti-ice system, and providing the airflow to the wing anti-ice system via the heat exchanger.. . ... Hamilton Sundstrand Corporation

02/02/17 / #20170033721

Circuit with current sharing alternately switched parallel transistors

Paralleled igbts are controlled such that current is alternately switched through each of the two paralleled igbt to reduce conduction and switch losses on each igbt.. . ... Hamilton Sundstrand Corporation

02/02/17 / #20170033594

Dual-source multi-mode vehicle power supply

A dual-source multi-mode power supply system includes a battery power supply, a first dc bus, an electric power generating system and a second dc bus. The battery power supply includes a dc-dc converter circuit configured to convert a first dc voltage into a second dc voltage for supplying power to the first dc bus. ... Hamilton Sundstrand Corporation

02/02/17 / #20170032889

Rolled inductor with thermal pottant

An apparatus includes a substrate layer formed from a pottant material that extends longitudinally in an unwound state. Cores are spaced longitudinally along the substrate layer and joined to the substrate at a first surface. ... Hamilton Sundstrand Corporation

02/02/17 / #20170030992

Dynamic calibrating current sensor

A dynamic calibrating current sensor control system includes an input power supply that generates an input current and a current sensor interposed between the input power supply and the load. The current sensor is configured to output at least one current signal indicating a level of current delivered to the load. ... Hamilton Sundstrand Corporation

02/02/17 / #20170030477

Passive servo filter for pneumatic valve with transverse actuator

A bleed assembly includes a bleed valve disposed across a bleed duct. The bleed valve includes a valve housing, a shaft connecting an actuator assembly to a flow control member, and a servo tube. ... Hamilton Sundstrand Corporation

02/02/17 / #20170030412

Bearing retention method and apparatus

A method of assembling a bearing assembly includes fitting a first ring onto a first end of a gear shaft. A second ring is fed into a slot in the first ring. ... Hamilton Sundstrand Corporation

02/02/17 / #20170030404

Foil bearing with split key

A gas bearing within a cylinder is provided. The gas bearing comprises an anti-rotation tab comprising a first side and a second side, the anti-rotation tab sitting within a key way of the cylinder. ... Hamilton Sundstrand Corporation

02/02/17 / #20170030376

Method of installing a diffuser in an air cycle machine

A method of installing a diffuser in an air cycle machine includes placing a first housing on a shaft, placing a seal plate on the shaft, and placing a diffuser on the shaft. Next, the diffuser and the seal plate are aligned with an alignment tool. ... Hamilton Sundstrand Corporation

02/02/17 / #20170030347

Dual mode fuel pump system

A method and system providing a pressurized fluid includes a pump having a pump inlet and a pump outlet, the pump to provide a fluid flow, a bypass path to direct the fluid flow from the pump outlet to the pump inlet, a load path having a load path pressure, the load path including: a fluid accumulator to accumulate a fluid volume, and at least one load device, a bypass regulator valve in fluid communication with the pump outlet, the bypass path, and the load path, and a controller to direct the fluid flow to the load path in response to the load path pressure being less than a low load path threshold pressure via the bypass regulator valve and to direct the fluid flow to the bypass path in response to the load path pressure being greater than a high load path threshold pressure via the bypass regulator valve.. . ... Hamilton Sundstrand Corporation

01/26/17 / #20170027082

Aircraft heat exchange system including a thermoelectric device

A heat exchange system for an aircraft includes an aircraft controller for controlling an operation of an aircraft, a thermoelectric device having a low temperature side and a high temperature side, an inlet line that carries fluid through the low temperature side of the thermoelectric device and to the aircraft controller; and an outlet line that carrier the fluid away from the and aircraft controller through the high temperature side of the thermoelectric device. Heat is transferred away from the inlet line to the outlet line through the thermoelectric device when a predetermined condition is met.. ... Hamilton Sundstrand Corporation

01/26/17 / #20170023056

Foil bearing with trailing edge key

A gas bearing within a cylinder is provided. The gas bearing comprises an anti-rotation tab sitting within a key way of the cylinder. ... Hamilton Sundstrand Corporation

01/26/17 / #20170023053

Fixed shaft for hydraulic unit

A fixed shaft of a hydraulic unit is provided including a body having a first end and a second opposite end. A first flange and a substantially identical second flange are integrally formed with the body of the shaft adjacent the second end. ... Hamilton Sundstrand Corporation

01/26/17 / #20170022813

Vane pump

A vane pump is disclosed that includes a plurality of vanes and radial slots configured to provide a gap between the vane and the radial slot such that the vane has a different angular position relative to the direction of rotation in a radially extended position compared to an angular position in a radially-retracted position. The different angular positions provide different orientation of the arcuate surface of the vane tip portion with respect to the cam body inner surface, thus providing different fluid stop points on the vane tip portion arcuate surface.. ... Hamilton Sundstrand Corporation

01/26/17 / #20170021938

Aircraft heat exchange system including a thermoelectric device

A heat exchange system for an aircraft includes an aircraft controller for controlling an operation of an aircraft, a thermoelectric device having a low temperature side and a high temperature side. Heat is transferred away from the inlet line to the outlet line through the thermoelectric device when a predetermined condition is met.. ... Hamilton Sundstrand Corporation

01/19/17 / #20170019047

Fault tolerant electric power generating system

An electrical power generating system comprises a first permanent magnetic generator (pmg) stator winding of a generator machine, a first active rectifier communicatively connected to the first pmg stator winding, the first active rectifier operative to receive alternating current (ac) from the first pmg stator winding and convert the ac to direct current (dc), a direct current link communicatively connected to the first active rectifier, wherein the first active rectifier is operative to output the dc to the direct current link, a second pmg stator winding of the generator machine, and a second active rectifier communicatively connected to the second pmg stator winding, the second active rectifier operative to receive ac from the second pmg stator winding and convert the ac to dc, the second active rectifier communicatively connected to the direct current link and operative to output dc to the direct current link.. . ... Hamilton Sundstrand Corporation

01/19/17 / #20170018074

Security protected part identification and method of part manufacture

A part identification system includes a part made of at least a first material having a first density, and an identifier made of a second material embedded in the first material and having a second density greater than the first density, and wherein the identifier is visually invisible. A security reader of the system is constructed and arranged to read the identifier and may be a radiographic reader. ... Hamilton Sundstrand Corporation

01/19/17 / #20170016549

Bleed valves for gas turbine engines

A bleed valve for a gas turbine engine compressor has a valve body and a flapper. The valve body defines a flow path and includes a flapper seat. ... Hamilton Sundstrand Corporation

01/19/17 / #20170016489

Disconnect mechanisms

A disconnect mechanism includes an input shaft defining a drive axis. A disconnect shaft is selectably engaged with the input shaft to be driven about the drive axis by the input shaft. ... Hamilton Sundstrand Corporation

01/19/17 / #20170016449

Axial-flux induction motor pump

A pump comprises a housing partially defining a cavity, an impeller arranged in cavity, the impeller including a first disk, and a vane arranged on the first disk, the impeller operative to rotate about a rotational axis, a first stator core arranged on the housing, windings arranged on the first stator core, and a first inlet defined by the housing, wherein the first inlet, the impeller, and the housing partially define a fluid flow path.. . ... Hamilton Sundstrand Corporation

01/19/17 / #20170016344

Air cycle machine lockout tool

A lockout tool for an air cycle machine includes a lockout tool body threaded section, a lockout tool body end section, and a lockout tool body conical tip. The lockout tool body threaded section is operable to engage a threaded port of the air cycle machine that is proximate to a shaft of the air cycle machine. ... Hamilton Sundstrand Corporation

01/19/17 / #20170016096

Method of manufacturing aluminum alloy articles

A method for making an article is disclosed. The method involves first generating a digital model of the article. ... Hamilton Sundstrand Corporation

01/19/17 / #20170016095

Method of manufacturing aluminum alloy articles

A method for making an article is disclosed. The method involves first generating a digital model of the article. ... Hamilton Sundstrand Corporation

01/19/17 / #20170016094

Method of manufacturing aluminum alloy articles

A method for making an article is disclosed. The method involves first generating a digital model of the article. ... Hamilton Sundstrand Corporation

01/19/17 / #20170016093

Method of manufacturing aluminum alloy articles

A method for making an article is disclosed. The method involves first generating a digital model of the article. ... Hamilton Sundstrand Corporation

01/19/17 / #20170015557

Membrane-based air separation module

A membrane-based air separation module includes an inlet configured to receive supply air, a first hollow fiber membrane configured to substantially remove water from the supply air to form an anhydrous air stream, and a permeate port configured to exhaust the water removed by the first hollow fiber membrane from the air separation module. The air separation module also includes a second hollow fiber membrane positioned downstream of the first hollow fiber membrane configured to receive the anhydrous air stream and substantially remove oxygen from the anhydrous air stream, an oxygen-enriched air outlet configured to exhaust the oxygen removed by the second hollow fiber membrane from the air separation module, and a nitrogen-enriched air outlet configured to supply a stream of nitrogen-enriched air to a fuel tank of an aircraft.. ... Hamilton Sundstrand Corporation

01/19/17 / #20170015433

Protection system for polymeric air separation membrane

An air separation system includes a feed air line for transporting feed air and an air separation module with a polymeric membrane. The air separation module is configured to receive feed air through the feed air line and separate the feed air into nitrogen-enriched air and oxygen-enriched air. ... Hamilton Sundstrand Corporation

01/19/17 / #20170015426

Raf bit for surge detection

A ram air fan (raf) assembly is provided and includes a ram air inlet, a heat exchanger disposed in the ram air inlet, an raf disposed in the ram air inlet to drive airflow through the heat exchanger, a sensor disposed in the ram air inlet proximate to the raf and a controller. The controller is operably coupled to the raf and the sensor and is configured to drive rotations of the raf to achieve a target raf rotational speed in accordance with a determination that a reading generated by the sensor is indicative of a surge event.. ... Hamilton Sundstrand Corporation

01/19/17 / #20170014774

Condition monitoring for an air separation module

An air separation module includes a shell configured to house an air separation membrane, an inlet configured to receive supply air, an oxygen-enriched air outlet configured to exhaust oxygen from the air separation module, and a nitrogen-enriched air outlet configured to supply a stream of nitrogen-enriched air to a fuel tank of an aircraft. The air separation module also includes a condition monitoring sensor integral with the air separation module and configured to measure at least one of a plurality of conditions; and a connector integral with the air separation module and configured to join the condition monitoring sensor with an electrical system of the aircraft.. ... Hamilton Sundstrand Corporation

01/19/17 / #20170014752

Oxygen sensing for fuel tank inerting system

An air separation system includes an air separation module configured to receive feed air and separate the feed air into nitrogen-enriched air and oxygen-enriched air. The air separation module includes an inlet header, an outlet header, and an oxygen sensor located in the outlet header and configured to sense a concentration of oxygen in the nitrogen-enriched air.. ... Hamilton Sundstrand Corporation

01/19/17 / #20170014749

Oxygen sensor protection

An air separation system includes an air separation module configured to receive feed air and separate the feed air into nitrogen-enriched air and oxygen-enriched air, a nitrogen-enriched air line for transporting the nitrogen-enriched air from the air separation module to a fuel tank for inerting, an oxygen sensing line connected to the nitrogen-enriched air line, a gas adsorption filter located in the oxygen sensing line, and an oxygen sensor downstream of the gas adsorption filter in the oxygen sensing line.. . ... Hamilton Sundstrand Corporation

01/12/17 / #20170012485

Slot insulation for electrical machines

An electrical machine includes a winding core with a plurality of end slots. A winding is seated in the end slots with end windings where the winding crosses from end slot to end slot. ... Hamilton Sundstrand Corporation

01/12/17 / #20170009883

Wear resistant insert for pneumatic scotch yoke piston

A piston assembly includes a piston cross-member having a first end disposed opposite a second end. The piston assembly also includes a first cap disposed on the first end of the piston cross-member, and a second cap disposed on the second end of the piston cross-member. ... Hamilton Sundstrand Corporation

01/12/17 / #20170009768

Vane pumps

A vane pump includes a liner defining a cammed inner surface, a rotor rotatably disposed within the liner that has a plurality of vane slots, and a plurality of vanes slidably disposed within vane slots of the rotor and configured to extend away from the rotor and contact the cammed inner surface of the liner. The plurality of vanes include at least one sentinel vane that is configured to allow detection of wear on the sentinel vane.. ... Hamilton Sundstrand Corporation

01/12/17 / #20170008638

Power-distribution system providing complete separability between a circuit breaker panel and a chassis

A power-distribution panel has a circuit-breaker panel that is completely separable from an aircraft and from a back chassis connected to the aircraft. The back chassis is mechanically mounted to the aircraft and electrically connected to both a power-supply bus and a power-distribution harness of the aircraft. ... Hamilton Sundstrand Corporation

01/12/17 / #20170007966

Air separation module canister

An air separation module includes a housing, an air separation element, and an insulating element. The housing has an inlet and two outlets. ... Hamilton Sundstrand Corporation

01/05/17 / #20170005544

Supplemental cooling of cabin air compressor motor

An assembly includes a first conductor, a tube extending along the first conductor between first and second ends of the first conductor, and an electrically-insulating barrier surrounding the first conductor and the tube such that the tube is spaced from the first conductor. Another assembly includes a plurality of conductors, a first tube extending along at least one of the conductors, and an electrically-insulating barrier enclosing the conductors and the first tube in which the barrier maintains spacing between the first tube and one or more adjacent conductors. ... Hamilton Sundstrand Corporation

01/05/17 / #20170002679

Electric actuator for engine control

An electric actuator for control of an engine includes an electric motor coupled to a drive shaft that extends to align a gear interface of the electric actuator with a variable geometry adjustment interface of the engine. A position feedback shaft extends coaxially with respect to the drive shaft. ... Hamilton Sundstrand Corporation








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