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United Technologies Corporation patents


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

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 new patent  Redox-air indirect fuel cell

An electrochemical device includes first and second spaced-apart electrodes. The first electrode is configured for redox reactions with a liquid electrolyte solution and the second electrode is configured for redox reactions with each of a gaseous reductant and a gaseous oxidant. ... United Technologies Corporation

 new patent  Method of treating carbon electrode

A method of treating a carbon electrode includes heat treating a carbon-based electrode in an environment that is above approximately 325° c. And that includes an oxidizing gas, and prior to use of the carbon-based electrode in an electro-chemical battery device, soaking the carbon-based electrode in an oxidizer solution.. ... United Technologies Corporation

 new patent  Parametric trending architecture concept and design

A method for foreign object debris detection in a gas turbine engine may comprise receiving, by a controller, a plurality of master configuration parameters, receiving, by the controller, a plurality of individual configuration parameters in response to the plurality of master configuration parameters, receiving, by the controller, a first time-series data from a database, pre-processing, by the controller, the first time-series data to generate a second time-series data, implementing, by the controller, an anomaly detector model, the anomaly detector model configured to generate a third time-series data, and implementing, by the controller, a foreign object debris (fod) damage model, the fod damage model receiving the third time-series data. The pre-processing the first time-series data, the implementing the anomaly detector model, and the implementing the fod damage model may be defined by the plurality of individual configuration parameters.. ... United Technologies Corporation

 new patent  Fluid supply over range of gravitational conditions

Aspects of the disclosure are directed to a system comprising: a tank that stores a fluid, and a conduit that includes a first end and a second end, where the conduit is configured to convey at least a portion of the fluid stored in the tank from the second end of the conduit to the first end of the conduit, where a first end region of the conduit coinciding with the second end of the conduit has a first end region density and the fluid has a fluid density, where the first end region density is greater than or equal to the fluid density such that the first end region of the conduit remains immersed in the fluid stored in the tank when the fluid in the tank is under negative gravity conditions.. . ... United Technologies Corporation

 new patent  Airfoil structure having a shape memory alloy actuator

A fan blade includes a blade body and a shape memory alloy actuator. The blade body has a pressure side disposed opposite a suction side. ... United Technologies Corporation

 new patent  Gear system architecture for gas turbine engine

A disclosed gas turbine engine includes a fan including a plurality of fan blades rotatable about an axis, a bypass duct, a compressor section and a bypass ratio greater than 10. A combustor in fluid communication with the compressor section and a fan drive turbine in communication with the combustor. ... United Technologies Corporation

 new patent  Method of assembly for gas turbine fan drive gear system

A method of assembling an epicyclic gear train according to an example of the present disclosure includes, among other things, the steps of providing a carrier having a central axis that includes spaced apart side walls and circumferentially spaced connecting structure defining mounts that interconnect the side walls, spaced apart apertures provided at an outer circumference of the carrier, gear pockets provided between the side walls and extending to the apertures, and a central opening in at least one of the walls, providing oil baffles between the side walls, the oil baffles including ends that abut the mounts, inserting a plurality of intermediate gears through the central opening, and then moving the intermediate gears radially outwardly into the gear pockets to extend into the apertures, inserting a sun gear through the central opening, and moving the plurality of intermediate gears radially inwardly to engage the sun gear.. . ... United Technologies Corporation

 new patent  Large area ratio cooling holes

A component of a gas turbine engine includes a cooling hole extending from a first side to a second side that includes an inlet portion disposed about an axis that includes an area defining an inlet area through a first surface. The cooling hole further includes a diffuser portion in communication with the inlet portion. ... United Technologies Corporation

 new patent  Gas turbine engine article with panel retained by preloaded compliant member

An airfoil includes an airfoil structure that has an interior cavity, a preloaded compliant member in the interior cavity, and a panel that defines a portion of an airfoil profile. The preloaded compliant member compliantly retains the panel in a seated position on the airfoil structure.. ... United Technologies Corporation

 new patent  Airfoil with sealed baffle

An airfoil includes a supply passage to provide a coolant, an airfoil section that has walls that define an internal cavity, a baffle seated in the internal cavity, and a seal proximate the edge of the baffle. The baffle is seated such that there is a gap between the baffle and at least one of the walls. ... United Technologies Corporation

 new patent  Gas turbine engine component with degradation cooling scheme

A gas turbine engine component includes a passage and a wall adjacent the passage. The wall includes a first side bordering the passage and a second side opposite the first side. ... United Technologies Corporation

 new patent  Article having ceramic wall with flow turbulators

An article includes a ceramic wall that defines at least a side of a passage. The ceramic wall includes a flow turbulator that projects into the passage. ... United Technologies Corporation

 new patent  Foreign object debris trending concept and design

A system and method for detecting foreign object debris damage is disclosed. A method for foreign object debris detection in a gas turbine engine may include receiving, by a controller, a first time-series data from a database, wherein the first time-series data comprises a feature, pre-processing, by the controller, the first time-series data to generate a second time-series data, generating a third time-series data via an anomaly detector model, sending, by the controller, the third time-series data to a foreign object debris (fod) damage model, and determining, by the controller, that a fod event has occurred based on data received from the fod damage model. ... United Technologies Corporation

 new patent  Geared architecture for high speed and small volume fan drive turbine

A gas turbine engine according to an example of the present disclosure includes, among other things, a fan shaft drivingly connected to a fan with the fan having fan blades. A fan shaft support that supports the fan shaft and a gear system connected to the fan shaft. ... United Technologies Corporation

05/17/18 / #20180135453

 new patent  Airfoil with airfoil piece having radial seal

An airfoil includes an airfoil piece that defines at least a portion of an airfoil profile. The airfoil piece has a radial end and a first radial slot in the radial end. ... United Technologies Corporation

05/17/18 / #20180135452

 new patent  Airfoil with panel having perimeter seal

An airfoil includes an airfoil structure that defines a portion of an airfoil profile and a panel that defines a different portion of the airfoil profile. The panel has perimeter edges that meet the airfoil structure in a perimeter joint, and there is a perimeter seal disposed in the perimeter joint.. ... United Technologies Corporation

05/17/18 / #20180135451

 new patent  Endwall arc segments with cover across joint

An article includes first and second endwall arc segments that include a gaspath side and airfoils on the gaspath side. Each of the first and second endwall arc segments include first and second circumferential mate faces. ... United Technologies Corporation

05/17/18 / #20180135450

 new patent  Airfoil with seal between endwall and airfoil section

An airfoil includes an endwall section and an airfoil section that defines, at least in part, an airfoil profile. At least one of the airfoil section or the endwall section includes a seal cavity, and a seal is disposed in the seal cavity.. ... United Technologies Corporation

05/17/18 / #20180135447

 new patent  Airfoil with dual profile leading end

An airfoil includes an airfoil section with a dual airfoil profile. The airfoil section includes a double wall. ... United Technologies Corporation

05/17/18 / #20180135446

 new patent  Airfoil with ceramic airfoil piece having internal cooling circuit

An airfoil includes an airfoil section that has radially inner and outer ends and defines an airfoil profile. The airfoil profile has a leading end, a trailing end, a suction side, and a pressure side. ... United Technologies Corporation

05/17/18 / #20180135445

 new patent  Airfoil pieces secured with endwall section

An airfoil includes an airfoil section that defines an airfoil profile, and a first endwall section with which the airfoil section is attached. First and second airfoil pieces form different portions of the airfoil profile. ... United Technologies Corporation

05/17/18 / #20180135444

 new patent  Airfoil with retention pocket holding airfoil piece

An airfoil includes an airfoil body that has a retention pocket and an airfoil piece disposed in the retention pocket. The retention pocket secures the airfoil piece in place. ... United Technologies Corporation

05/17/18 / #20180135443

 new patent  Turbine engine component with geometrically segmented coating section and cooling passage

A gas turbine engine component includes a passage and a geometrically segmented coating section adjacent the passage. The geometrically segmented coating section includes a wall that has a first side bordering the passage and a second side opposite the first side. ... United Technologies Corporation

05/17/18 / #20180135442

 new patent  Airfoil with tie member and spring

An airfoil includes an airfoil section that has an internal cavity and first and second endwall sections between which the airfoil section is disposed. The first endwall section includes a guide portion that has a guide opening flanked by first and second bearing lands. ... United Technologies Corporation

05/17/18 / #20180135441

 new patent  Airfoil with geometrically segmented coating section

An airfoil includes an airfoil body that has a geometrically segmented coating section. The geometrically segmented coating section includes a wall having an outer side. ... United Technologies Corporation

05/17/18 / #20180135439

 new patent  Airfoil with geometrically segmented coating section

An airfoil includes an airfoil body that has a geometrically segmented coating section. The geometrically segmented coating section includes a wall having an outer side. ... United Technologies Corporation

05/17/18 / #20180135438

 new patent  Airfoil having panel with geometrically segmented coating

An airfoil includes an airfoil section that defines an airfoil profile. The airfoil section includes a distinct panel that forms a portion of the airfoil profile. ... United Technologies Corporation

05/17/18 / #20180135437

 new patent  Method for making ceramic turbine engine article

A method of fabricating a ceramic turbine engine article includes building a wall of the article from preceramic layers, wherein the building includes arranging the preceramic layers around one or more sacrificial core elements, converting the preceramic layers to ceramic, and removing the one or more sacrificial core elements to leave one or more cavities in the wall.. . ... United Technologies Corporation

05/17/18 / #20180135435

 new patent  Airfoil with geometrically segmented coating section having mechanical secondary bonding feature

An airfoil includes an airfoil body that has a geometrically segmented coating section. The geometrically segmented coating section includes a wall that has an outer side. ... United Technologies Corporation

05/17/18 / #20180135431

 new patent  Airfoil with laterally insertable baffle

An airfoil includes an airfoil section that defines an aerodynamic profile that has leading and trailing ends. The airfoil section spans in a longitudinal direction between first and second end sections. ... United Technologies Corporation

05/17/18 / #20180135429

 new patent  Airfoil with panel and side edge cooling

An airfoil includes a core structure that defines a cooling passage, a panel attached with the core structure, and a channel. The panel has an exterior gas path side, an opposed interior side, and side edges. ... United Technologies Corporation

05/17/18 / #20180135428

 new patent  Airfoil with airfoil piece having axial seal

An airfoil includes an airfoil section that defines an airfoil profile. The airfoil section includes first and second airfoil pieces. ... United Technologies Corporation

05/17/18 / #20180135427

 new patent  Airfoil with leading end hollow panel

An airfoil includes an airfoil section that defines an airfoil profile. The airfoil section includes a core structure and a hollow panel adjacent to the core structure. ... United Technologies Corporation

05/17/18 / #20180135422

 new patent  Airfoil with rods adjacent a core structure

An airfoil includes an airfoil section defining an airfoil profile, the airfoil section including a core structure and a plurality of rods disposed adjacent the core structure.. . ... United Technologies Corporation

05/17/18 / #20180135421

 new patent  Airfoil with panel fastened to core structure

An airfoil includes a core structure and a panel fastened to the core structure. The panel has an exterior, gas path side and an opposed interior side that includes a tab. ... United Technologies Corporation

05/17/18 / #20180135420

 new patent  Airfoil endwall with partial integral airfoil wall

An airfoil includes an airfoil section that defines an airfoil profile. A first endwall piece includes a first cup portion that defines a first cavity. ... United Technologies Corporation

05/17/18 / #20180135419

 new patent  Airfoil with panel having flow guide

An airfoil includes a core structure, a passage, and a panel attached with the core structure adjacent the passage. The panel has an exterior gas path side and an opposed interior side bordering the passage. ... United Technologies Corporation

05/17/18 / #20180135418

 new patent  Airfoil having endwall panels

An airfoil includes a core structure that has an airfoil portion that defines at least a portion of an airfoil profile. The airfoil portion has first and second opposed ends. ... United Technologies Corporation

05/17/18 / #20180135417

 new patent  Airfoil having panels

An airfoil includes an airfoil section that defines an airfoil profile. The airfoil section includes a panel that forms a portion of the airfoil profile and a core structure to which the panel is secured.. ... United Technologies Corporation

05/17/18 / #20180134027

 new patent  Selective powder dosing for an additively manufacturing system

An additive manufacturing system can include a powder dispenser; a gate adjacent to the powder dispenser; a recoater blade system; and a control operable to move the gate with respect to the powder dispenser to selectively dispense powder from the powder dispenser.. . ... United Technologies Corporation

05/17/18 / #20180133825

 new patent  Electrical discharge machining electrode

An exemplary method of manufacturing an electrical discharge machining electrode includes, among other things, immersing at least a portion of an electrode base in a fluid, and electroplating an electrode coating containing diamond to an electrode base.. . ... United Technologies Corporation

05/17/18 / #20180133804

 new patent  Additive manufacturing process with metal chips produced by machining processes as feedstock

A manufacturing process includes collecting metal chips produced by a subtractive manufacturing processes and sorting the metal chips. The process further includes heating the metal chips to form a melt, removing impurities from the melt, deoxidizing the melt and atomizing the melt to form metal powder. ... United Technologies Corporation

05/10/18 / #20180130270

Vehicle data collection system and method

A method of data collection for a vehicle includes defining a first data acquisition definition file at a data collection and reporting hub based on a first vehicle build configuration, the first vehicle build configuration based on first individual build configurations of one or more vehicle systems, and the first data acquisition definition file including parameters and measurements to be performed by a data acquisition system disposed at the vehicle. The first vehicle build configuration is changed to a second vehicle build configuration, and the first data acquisition definition file is automatically updated to a second data acquisition definition file corresponding to the second vehicle build configuration via the data collection and reporting hub.. ... United Technologies Corporation

05/10/18 / #20180130269

Vehicle data collection system and method

A method of data collection for a vehicle includes defining a vehicle build configuration based on individual build configurations of one or more vehicle systems, and defining a data acquisition definition file at a data collection and reporting hub based on the vehicle build configuration. The data acquisition definition file includes parameters and measurements to be performed by a data acquisition system located at the vehicle. ... United Technologies Corporation

05/10/18 / #20180129974

Control systems using deep reinforcement learning

Data indicative of a plurality of observations of an environment are received at a control system. Machine learning using deep reinforcement learning is applied to determine an action based on the observations. ... United Technologies Corporation

05/10/18 / #20180128486

Axial non-linear interface for combustor liner panels in a gas turbine combustor

A combustor for a gas turbine engine including a non-linear axial edge between the forward edge and the aft edge. A combustor for a gas turbine engine including a multiple of forward liner panels circumferentially mounted within the support shell via a multiple of studs, each of the multiple of forward liner panels having a non-linear axial edge therebetween to define a forward non-linear interface between each adjacent pair of the multiple of forward liner panels and a multiple of aft liner panels circumferentially mounted within the support shell via a multiple of studs aft of the multiple of forward liner panels, each of the multiple of aft liner panels having an aft non-linear axial edge therebetween to define a non-linear interface between each adjacent pair of the multiple of aft liner panels.. ... United Technologies Corporation

05/10/18 / #20180128485

Stud arrangement for gas turbine engine combustor

A liner panel for use in a combustor of a gas turbine engine, the liner panel includes a stud free zone downstream of a combustor swirler. A combustor for a gas turbine engine, the combustor including a liner panel mounted to the support shell via a multiple of studs, the liner panel including a stud free zone downstream of each respective combustor swirler, the stud free zone including a multiple of film cooling holes. ... United Technologies Corporation

05/10/18 / #20180128400

Feed through seals and fittings

An embodiment of a fitting assembly includes a fitting having at least a solid outer body, a pass-through bore, and at least one undercut region. The pass-through bore is defined by at least one pass-through bore wall, extending longitudinally through a length of the outer body from a first end to a second end. ... United Technologies Corporation

05/10/18 / #20180128319

Variable volume bearing compartment

A bearing compartment assembly includes a bearing compartment with a bearing and a plenum, a buffer system that supplies pressure to an exterior of the bearing compartment, and a reactive volume vessel connected to the bearing compartment. The reactive volume vessel has a displaceable member that is movable between two positions, one of which adds additional volume to the bearing compartment.. ... United Technologies Corporation

05/10/18 / #20180128284

Coated turbomachinery component

A rotor for a turbomachine is provided which includes a hub; and a plurality of blades extending radially from the hub, the plurality of blades comprising a first subset of blades having first tips and an abrasive coating on the first tips, and a second subset of blades having second tips with no abrasive coating on the second tips, wherein a radius (r2) of the first subset of blades, including thickness of the abrasive coating, is greater than a radius (r1) of the second subset of blades, and wherein a base radius (r) of the first subset of blades, not including thickness of the abrasive coating, is less than the radius (r1) of the second subset of blades.. . ... United Technologies Corporation

05/10/18 / #20180128187

Cooled cooling air safety through a temperature-monitoring line replaceable unit

A temperature detection device located downstream a cooling network coupled to a gas turbine engine and located upstream of at least one of a compressor rotor of a compressor section of the gas turbine engine and a turbine rotor of a turbine section of the gas turbine engine, is provided. The temperature detection device includes at least one thermocouple configured to detect an operational temperature of the cooling network. ... United Technologies Corporation

05/10/18 / #20180128186

Flexible coupling for geared turbine engine

A gas turbine engine includes a fan shaft arranged along an engine central axis, a frame supporting the fan shaft, a gear system rotatably coupled with the fan shaft, and a flexible coupling at least partially supporting the gear system. The flexible coupling defines, with respect to the engine central axis, a torsional stiffness ts and a lateral stiffness ls such that a ratio of ts/ls is greater than or equal to about 2.0 to reduce loads on the gear system from misalignment of the gear system with respect to the engine central axis.. ... United Technologies Corporation

05/10/18 / #20180128185

Flexible coupling for geared turbine engine

A gas turbine engine includes a fan shaft arranged along an engine central axis, a frame supporting the fan shaft, a gear system rotatably coupled with the fan shaft, and a flexible coupling at least partially supporting the gear system. The flexible coupling defines, with respect to the engine central axis, a torsional stiffness ts and a lateral stiffness ls such that a ratio of ts/ls is greater than or equal to about 2.0 to reduce loads on the gear system from misalignment of the gear system with respect to the engine central axis.. ... United Technologies Corporation

05/10/18 / #20180128179

Intercooled cooling air heat exchanger arrangement

An intercooled cooling system for a gas turbine engine is provided. The intercooled cooling system includes a plurality of cooling stages in fluid communication with an air stream utilized for cooling. ... United Technologies Corporation

05/10/18 / #20180128178

Intercooled cooled cooling integrated air cycle machine

A first cooling stage is fluidly coupled to a bleed port of a compressor to receive and cool bleed air with the air stream to produce a cool bleed air. A cooling pump receives and increases a pressure of the cool bleed air to produce a pressurized cool bleed air. ... United Technologies Corporation

05/10/18 / #20180128176

Intercooled cooled cooling integrated air cycle machine

An intercooled cooling system for a gas turbine engine is provided. The intercooled cooling system includes cooling stages in fluid communication with an air stream utilized for cooling. ... United Technologies Corporation

05/10/18 / #20180128168

Geared turbofan with three turbines all counter-rotating

A gas turbine engine has a fan rotor, a first compressor rotor and a second compressor rotor. The second compressor rotor compresses air to a higher pressure than the first compressor rotor. ... United Technologies Corporation

05/10/18 / #20180128124

Apparatus and method for providing fluid to a bearing damper

Disclosed is a lubricant supply system for a plurality of bearing dampers in a plurality of engine bearing compartments of a gas turbine engine, including a lubricant supply conduit, a first lubricant delivery conduit fluidly coupled to the supply conduit, the first delivery conduit including one or more lubricant delivery flow paths and delivering lubrication to engine components, a second lubricant delivery conduit fluidly coupled to the supply conduit, the second delivery conduit delivering lubricant to one or more of the plurality of bearing dampers, and an active oil flow management valve, selectively restricting lubricant flow in the first delivery conduit, increasing pressure in the second delivery conduit, based on an engine shaft rotational speed.. . ... United Technologies Corporation

05/10/18 / #20180128123

Apparatus and method for providing fluid to a bearing damper

Disclosed is a lubricant supply system, for a bearing damper in a bearing housing, the bearing housing in an engine bearing compartment of a gas turbine engine, the bearing compartment rotatably supporting an engine component, including a first interface, a second interface, a bearing supply conduit fluidly coupled to the second interface and extending from the first interface to the second interface, the bearing supply conduit supplying lubricant to the bearing housing, a damper supply conduit located within the bearing supply conduit, extending between the interfaces, the damper supply conduit supplying lubricant to the bearing damper, and fluid in the bearing supply conduit is capable of insulting fluid in the damper supply conduit 108 from heat transferred through the interfaces.. . ... United Technologies Corporation

05/10/18 / #20180128122

Apparatus and method for providing fluid to a bearing damper

A lubricant supply system for a bearing damper in an engine bearing compartment of a gas turbine engine, the bearing compartment rotatably supporting an engine component and including a drain system for purging excess lubricant, including a first interface, a second interface, a drain conduit fluidly coupled to the first interface and extending from the first interface to the second interface, the drain conduit receiving fluid, including excess lubricant and lubricant purging air, from the first interface, a supply conduit located within the drain conduit, extending between the interfaces the supply conduit providing lubricant to the bearing damper and fluid in the drain conduit is capable of insulting fluid in the supply conduit from heat transferred through the interfaces.. . ... United Technologies Corporation

05/10/18 / #20180128121

Apparatus and method for providing fluid to a bearing damper

Disclosed is a lubricant supply system for a bearing damper in an engine bearing compartment of a gas turbine engine, the bearing compartment rotatably supporting an engine component, including a first interface, a second interface, a supply conduit fluidly coupled to the second interface and extending from the first interface to the second interface, the conduit supplying lubricant to the bearing damper and including a first discrete cavity, extending proximate to the first interface, a second discrete cavity, extending proximate to the second interface, the discrete cavities, mutually spaced to be substantially outside a core gas path c of engine, the discrete cavities being air sealed against the supply conduit, insulating fluid in the supply conduit from heat transferred from the interfaces.. . ... United Technologies Corporation

05/10/18 / #20180128119

Minidisk balance flange

A minidisk for a rotor system may comprise a balance flange defining a hole array, which may include a first hole having a first width. The first hole may be configured to receive a balance weight. ... United Technologies Corporation

05/10/18 / #20180128118

Turbine airfoil attachment with multi-radial serration profile

An attachment root of an airfoil is provided comprising a serration profile with a symmetry plane bisecting the serration profile. A first lobe of the serration profile has a first contact face angled 45 degrees from the symmetry plane. ... United Technologies Corporation

05/10/18 / #20180128115

Airfoil cooling circuits

An airfoil includes leading and trailing edges; first and second sides extending from the leading edge to the trailing edge, each side having an exterior surface; a core passage located between the first and second sides and the leading and trailing edges; and a wall structure located between the core passage and the exterior surface of the first side. The wall structure includes a plurality of cooling fluid inlets communicating with the core passage for receiving cooling fluid from the core passage, a plurality of cooling fluid outlets on the exterior surface of the first side for expelling cooling fluid and forming a cooling film along the exterior surface of the first side, and a plurality of cooling passages communicating with the plurality of cooling fluid inlets and the plurality of cooling fluid outlets. ... United Technologies Corporation

05/03/18 / #20180119870

Radical-neutralizing coating for a lubricant system

A method may comprise preparing a radical-neutralizing composition comprising a cerium compound and a carrier; applying the radical-neutralizing composition to a passageway surface of a lubricant passageway in a lubricant system component; and/or drying the radical-neutralizing composition to form a radical-neutralizing coating on the passageway surface comprising cerium oxide.. . ... United Technologies Corporation

05/03/18 / #20180119766

Damper for machining processes

A damper includes a damper body that is configured to be attached to a workpiece during a machining process. A first side of the damper body is configured to abut a first side of the workpiece. ... United Technologies Corporation

05/03/18 / #20180119720

Fastener with optimized drive features for maintenance

Aspects of the disclosure are directed to a system comprising: a fastener that includes: a head that includes a feature pattern to accommodate installation and removal of the fastener, where the feature pattern is biased to provide a first torque capability in the installation of the fastener and a second torque capability in the removal of the fastener, and where the second torque capability is greater than the first torque capability.. . ... United Technologies Corporation

05/03/18 / #20180119707

Fan blade with cover and method for cover retention

A fan for a gas turbine engine is provided. The fan having: a rotor; a hollow fan blade having a cavity, the hollow fan blade secured to the rotor; a cover covering the cavity; a platform independent of the hollow fan blade and secured to the rotor, wherein a portion of the cover is located below a peripheral edge of the platform and the peripheral edge retains the portion of the cover in a desired location.. ... United Technologies Corporation

05/03/18 / #20180119643

Geared turbofan gas turbine engine architecture

A gas turbine engine includes a very high speed low pressure turbine such that a quantity defined by the exit area of the low pressure turbine multiplied by the square of the low pressure turbine rotational speed compared to the same parameters for the high pressure turbine is at a ratio between about 0.5 and about 1.5.. . ... United Technologies Corporation

05/03/18 / #20180119564

Geared architecture for high speed and small volume fan drive turbine

A gas turbine engine according to an example of the present disclosure includes, among other things, a fan shaft drivingly connected to a fan with the fan having fan blades. A fan shaft support that supports the fan shaft and a gear system connected to the fan shaft. ... United Technologies Corporation

05/03/18 / #20180119563

Geared architecture for high speed and small volume fan drive turbine

A gas turbine engine according to an example of the present disclosure includes, among other things, a fan shaft drivingly connected to a fan with the fan having fan blades. A fan shaft support that supports the fan shaft and a gear system drivingly connected to the fan shaft. ... United Technologies Corporation

05/03/18 / #20180119560

Air metering for blade outer air seals

A seal assembly includes a blade outer air seal, a downstream vane, and a pressure wall, according to various embodiments. The blade outer air seal may include a radially outer surface and the downstream vane may be coupled to the blade outer air seal via a fluid sealing engagement. ... United Technologies Corporation

05/03/18 / #20180119559

Segmented annular seal

An annular seal includes an annular outer casing, a plurality of seal segments, and a plurality of spring components. The plurality of seal segments is coupled to the annular outer casing to cumulatively form an annular sealing surface, the annular sealing surface is configured to face a rotating structure to inhibit fluid leakage between the rotating structure and the annular sealing surface, and each seal segment of the plurality of seal segments is configured for independent radial movement relative to other seal segments of the plurality of seal segments. ... United Technologies Corporation

05/03/18 / #20180119558

W-seal shield for interrupted cavity

A sealing assembly for a gas turbine engine includes a case, a support arm, a carrier, a vane, a seal, and a gasket. The support arm is connected to and extending radially inward from the case. ... United Technologies Corporation

05/03/18 / #20180119557

Seal assembly

A seal assembly for a rotatable component having an axis of rotation. The seal assembly may include a first seal mounted to a housing and configured to be in sealing engagement with the rotatable component, a second seal mounted to the housing an axial distance apart from the first seal and configured to be in sealing engagement with the rotatable component, wherein the axial distance is parallel with the axis of rotation, a buffer fluid chamber defined between the first seal and the second seal, and a buffer fluid inlet in fluid providing communication with the buffer fluid chamber.. ... United Technologies Corporation

05/03/18 / #20180119556

Additively manufactured component for a gas powered turbine

A flowpath component includes a body having at least one internal cooling passage. The internal cooling passage is defined by a surface layer including a first material, and an interior layer comprising a second material. ... United Technologies Corporation

05/03/18 / #20180119553

Additively manufactured component for a gas powered turbine

A gaspath component includes a body having at least one internal cooling passage and a metering feature integral to the internal cooling passage. The metering feature and the body are a unitary structure.. ... United Technologies Corporation

05/03/18 / #20180117670

Shot tube for die-cast machine

A shot tube includes an inner bore for delivering molten material into a die-cast mold. The shot tube has an outer peripheral surface with at least one surface for receiving a locking member to lock the shot tube into an aperture in a fixed mold portion and an alignment structure for properly aligning the shot tube in the fixed mold portion. ... United Technologies Corporation

04/19/18 / #20180107203

Oil debris monitoring (odm) with adaptive learning

A system and method for debris particle detection with adaptive learning are provided. The method includes receiving oil debris monitoring (odm) sensor data from an oil debris monitor sensor and fleet data from a database, detecting a feature in the odm sensor data, generating an anomaly detection signal based on detecting an anomaly by comparing the feature in the odm sensor data to a limit defined by system information stored in the fleet data, selecting a maintenance action request based on the anomaly detection signal, and adjusting one or more of the feature, the anomaly, the limit, and the maintenance action request by applying an adaptive learning algorithm that uses the odm sensor data, fleet data, and feedback from field maintenance of one or more engines that evolves over time.. ... United Technologies Corporation

04/19/18 / #20180107176

System and method for simulating an operation of a gas turbine engine

A system for simulating an operation of a gas turbine engine is disclosed, having a computing system and a fadec in electronic communication therewith, the computer system simulating an engine state. In each delta time, being the fadec sampling rate (1) the fadec: senses the simulated engine state from the computing system; determines a difference between the sensed state and a predetermined engine state; and outputs engine control commands intended for achieving the predetermined state; and (2) the computing system: receives the fadec output; utilizes the output in an m×m jacobian block, having m active balances; and performs a reduced balance simulation, wherein: fewer than m columns of the block are analyzed, the analysis of each column defining a rolling jacobian pass; output from the rolling jacobian passes is integrated into the block, to define an updated simulated engine state; and the updated state is communicated to the fadec.. ... United Technologies Corporation

04/19/18 / #20180106194

Tip turbine engine composite tailcone

A non-metallic tailcone in a tip turbine engine includes a tapered wall structure disposed about a central axis. The non-metallic tailcone is fastened to a structural frame in the aft portion of the tip turbine engine. ... United Technologies Corporation

04/19/18 / #20180106159

Sliding seal

The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a seal ring including a radially extending base and an axially-extending leg disposed in a seal cavity between first and second components. ... United Technologies Corporation

04/19/18 / #20180106158

Vane intersegment gap sealing arrangement

A stator vane rail is provided. The stator vane rail may comprise a forward rail, an aft rail located axially opposite the forward rail, a first axial surface extending between the forward rail and the aft rail, a first feather seal slot disposed in the first axial surface, wherein a terminus of the first feather seal slot is radially spaced from a radial surface of the aft rail, a second axial surface extending between the forward rail and the aft rail, and a second feather seal slot disposed in the second axial surface, wherein the second feather seal slot extends from the radial surface of the aft rail.. ... United Technologies Corporation

04/19/18 / #20180106157

Seal face plate cooling

Aspects of the disclosure are directed to a sealing system for an engine having an axial centerline, comprising: a stationary carbon segment, and a seal plate that rotates when the engine is operated, where the seal plate includes an end face that is opposed to an interface between the carbon segment and the seal plate, and where the end face includes at least one groove that conveys a liquid cooling fluid.. . ... United Technologies Corporation

04/19/18 / #20180106156

Turbine vane cooling arrangement

A vane includes a pair of airfoils that have a plurality of film cooling holes that extend through an exterior surface of the airfoils. Each plurality of film cooling holes break through the exterior surface at geometric coordinates in accordance with cartesian coordinate values of x, y and z as set forth in table 1. ... United Technologies Corporation

04/19/18 / #20180106153

Blades and blade dampers for gas turbine engines

A blade damper for a gas turbine blade includes a blade damper body with a first damping surface and a second damping surface. The first damping surface is on a first side of the damper body and the second damping surface is on a second side of the damper body opposite the first damping surface for providing full functionality in both flipped and unflipped orientations.. ... United Technologies Corporation

04/19/18 / #20180105944

Method of treating liquid electrolyte solution

A method for treating a liquid redox electrolyte solution for use in a flow battery includes feeding a liquid redox electrolyte solution into a first half-cell of an electrochemical cell and feeding a gaseous reductant into a second half-cell of the electrochemical cell, and electrochemically reducing at least a portion of the liquid redox electrolyte solution in the electrochemical cell using the gaseous reductant.. . ... United Technologies Corporation

04/19/18 / #20180105914

Hybrid component and method of making

A method of forming a hybrid component having an axis of rotation includes forming a first substrate having a first interface surface and a first average grain size, forming a second substrate having a second interface surface and a second average grain size different from the first average grain size, and inertia welding the first and second substrates at a junction of the first and second interface surfaces to form a solid-state joint between the first and second substrates.. . ... United Technologies Corporation

04/19/18 / #20180105280

Multi-engine aircraft thrust balancing

An aircraft controller includes a memory for storing instructions. The instructions are operable to cause the controller to perform a thrust balancing method and ensure a balanced thrust output from the aircraft.. ... United Technologies Corporation

04/19/18 / #20180104765

Hybrid component and method of making

A method of forming a hybrid component having an axis of rotation includes forming a first substrate having a first average grain size, forming a second substrate having a second average grain size different from the first average grain size, positioning an interlayer on one of the first and second substrates, positioning a portion of the first substrate adjacent a portion of the second substrate such that the interlayer extends between the portion of the first substrate and the portion of the second substrate, heating the first and second substrates and the interlayer at a temperature below the melting points of the first and second substrates to melt the interlayer, and isothermally solidifying the interlayer to form a solid-state joint between the portions of the first and second substrates.. . ... United Technologies Corporation

04/19/18 / #20180104750

Feedback-controlled system for cyrogenically cooling machining tools

Disclosed is an improved method for cryogenically cooling machining tools where a feedback-controlled system uses temperature, pressure, flow and/or infrared sensors to regulate flow of a cryogenic coolant and functioning of a cutting tool.. . ... United Technologies Corporation

04/12/18 / #20180100408

Case with ballistic liner

A case for a gas turbine engine includes a plurality of distinct case sections in axial series. The case sections include, in axial order, a flange section, a forward shell section, a containment section, and an aft shell section. ... United Technologies Corporation

04/12/18 / #20180100406

Multi-ply seal

A seal may comprise a first ply including an annular shape and a second ply including a discontinuous annular shape having an axial split. The second ply may be positioned adjacent to a surface of the first ply.. ... United Technologies Corporation

04/12/18 / #20180100404

Axial-radial cooling slots on inner air seal

An air seal may comprise an annular ring defined by at least a proximal surface, a distal surface, an aft side and a forward side. A channel may be disposed in the forward side of the air seal and/or the aft side of the air seal and may extend between the proximal surface and the distal surface. ... United Technologies Corporation

04/12/18 / #20180099362

Airfoil aerodynamics

A method of manufacturing an airfoil. The method includes fixing the airfoil in a workpiece space, detecting a position of the airfoil in the workpiece space using a force-sensing element, and removing material from the airfoil to reduce a dimension of the airfoil. ... United Technologies Corporation

04/12/18 / #20180099169

Multi-directional fire extinguishing nozzle

A multi-directional fire extinguishing nozzle is disclosed. The multi-directional fire extinguishing nozzle may comprise a pylon fitting configured to receive a fire extinguishing agent. ... United Technologies Corporation

04/05/18 / #20180094817

Circumferential fuel shifting and biasing in an axial staged combustor for a gas turbine engine

An injector of a radial fuel injection system for a combustor of a gas turbine engine includes a swirler; and a fuel nozzle located within the swirler, the fuel nozzle located within the swirler, the fuel nozzle operable to provide a biased circumferential fuel distribution within the swirler. A method of controlling a fuel flow to a combustor of a gas turbine engine includes selectively controlling a biased circumferential fuel distribution within a swirler of a radial fuel injection system.. ... United Technologies Corporation

04/05/18 / #20180094814

Radial fuel shifting and biasing in an axial staged combustor for a gas turbine engine

An injector of a radial fuel injection system for a combustor of a gas turbine engine includes a swirler; and a fuel nozzle located within the swirler, the fuel nozzle located within the swirler, the fuel nozzle operable to provide a biased radial fuel distribution within the swirler. A method of controlling a fuel flow to a combustor of a gas turbine engine includes selectively controlling a biased radial fuel distribution within a swirler of a radial fuel injection system.. ... United Technologies Corporation

04/05/18 / #20180094675

Bearing centering spring with integral outer rings

A bearing centering spring includes a cylindrical body with outer rings at each end, wherein each outer ring has outer raceways on the inner surface of the body. There is also a retaining feature on an end of the body and ports through the body that are positioned between the outer rings.. ... United Technologies Corporation

04/05/18 / #20180094590

Pilot injector fuel shifting in an axial staged combustor for a gas turbine engine

Pilot fuel injectors for combustors of gas turbine engines are provided. The pilot fuel injectors include a swirler having an exit into a combustion chamber of the combustor and a nozzle located within the swirler. ... United Technologies Corporation

04/05/18 / #20180094588

Gas turbine engine motoring with starter air valve manual override

A system for gas turbine engine motoring includes an air turbine starter coupled to a gearbox of a gas turbine engine and a starter air valve in fluid communication with the air turbine starter to drive motoring of the gas turbine engine responsive to a regulated pressure from a compressed air source. A manual override of the starter air valve is adjustable to one or more predefined intermediate positions that partially open the starter air valve to limit a motoring speed of the gas turbine engine below a resonance speed of a starting spool of the gas turbine engine responsive to the regulated pressure.. ... United Technologies Corporation

04/05/18 / #20180094579

Turbofan engine bearing and gearbox arrangement

A turbofan engine according to an example of the present disclosure includes, among other things, a fan delivering air into a bypass duct and into a core engine, a fan drive gear system having a gear carrier, and a fan shaft coupling the fan drive gear system to the fan. The core engine includes a low spool including a low pressure turbine and a low pressure shaft, and a high spool including a high pressure turbine, a compressor, and a high pressure shaft coupling the high pressure turbine to the compressor. ... United Technologies Corporation

04/05/18 / #20180094545

Flange heat shield

A flange heat shield is provided. The flange heat shield may comprise an annular body having a forward end opposite an aft end. ... United Technologies Corporation

04/05/18 / #20180094541

Flexible support structure for a geared architecture gas turbine engine

A gas turbine engine includes a fan shaft is drivingly connected to a fan having fan blades. A gear system is connected to the fan shaft and driven through an input having a gear reduction ratio of greater than 2.3. ... United Technologies Corporation

04/05/18 / #20180094540

Flexible support structure for a geared architecture gas turbine engine

A gas turbine engine includes a fan that has fan blades. A fan shaft is drivingly connected to the fan. ... United Technologies Corporation

04/05/18 / #20180094532

Geared architecture for high speed and small volume fan drive turbine

A gas turbine engine includes a fan shaft that has fan blades. A fan shaft is drivingly connected to the fan. ... United Technologies Corporation

04/05/18 / #20180094528

Coolant flow redirection component

A gas turbine engine includes a compressor section, a combustor fluidly connected to the compressor section, and a turbine section fluidly connected to the combustor and mechanically connected to the compressor section via a shaft. Multiple rotors are disposed in one of the compressor section and the turbine section. ... United Technologies Corporation

03/29/18 / #20180089910

Aircraft data management system and method

A method of data collection and reporting for a vehicle fleet includes defining a master reporting template at an original equipment manufacturer. The master reporting template includes one or more original equipment manufacturer report structures for original equipment manufacturer use. ... United Technologies Corporation

03/29/18 / #20180087696

Fluid couplings and methods for additive manufacturing thereof

A method is provided involving an additive manufacturing system. This method includes a step of forming a first fluid conduit using the additive manufacturing system. ... United Technologies Corporation

03/29/18 / #20180087654

Oil baffle for gas turbine fan drive gear system

A turbo fan engine includes a housing that supports a compressor section. At least one compressor hub is within the compressor section. ... United Technologies Corporation

03/29/18 / #20180087406

Mid turbine frame including a sealed torque box

A mid-turbine frame for a gas turbine engine includes an inner frame case defining a sealed torque box cavity. Multiple spokes protrude radially outward from the inner frame case, and at least one service line is connected to the inner frame case.. ... United Technologies Corporation

03/29/18 / #20180087402

Integrated inner case heat shield

A mid-turbine frame for a gas turbine engine according to an example of the present disclosure includes, among other things, a first frame case, a flange coupled to the first frame case, and a heat shield adjacent to the flange. A method of cooling a portion of a gas turbine engine is also disclosed.. ... United Technologies Corporation

03/29/18 / #20180087398

Gas turbine engine with graphene heat pipe

A graphene heat pipe for a gas turbine engine includes a body of graphene. The body has a hot side to accept heat from the gas turbine engine, a cold side to reject heat from the body, and an adiabatic portion to flow heat within the body between the hot side and the cold side.. ... United Technologies Corporation

03/29/18 / #20180087397

Retaining ring end gap features

A gas turbine engine and a retaining ring are disclosed. The gas turbine engine includes a rotating disc assembly, including a rotating disc, a cover plate, and a retaining ring disposed between the rotating disc and the cover plate, wherein the retaining ring axially retains the rotating disc and the cover plate, the retaining ring including a rotating disc face to interface with the rotating disc; a cover plate face to interface with the cover plate; and an end gap portion defining an end gap, wherein at least one of the rotating disc face, the cover plate face, and the end gap portion includes a stress reducing feature.. ... United Technologies Corporation

03/29/18 / #20180085880

Blade outer air seal surface

A blade outer air seal for a gas turbine engine having a surface that is eccentric with respect to the engine rotation centerline, and a method for creating same, are disclosed. Also, a method for grinding a work piece having nominal curvature defined by a work piece curvature centerline is disclosed, comprising the steps of: a) determining a desired surface profile for the work piece; b) providing a rotating grinding surface having a grinding rotation centerline; c) offsetting the grinding rotation centerline from the work piece curvature centerline; and d) applying the rotating grinding surface to the work piece while rotating the rotating grinding surface about the grinding rotation centerline to create the desired surface profile.. ... United Technologies Corporation

03/29/18 / #20180085867

Method involving friction plug welding a flange

A method is provided that involves a component including a first fastener aperture that extends through the component. During the method, the component is machined to enlarge the first fastener aperture to provide an enlarged aperture. ... United Technologies Corporation

03/22/18 / #20180080753

Tri-axial capacitance probe with case integrated housing

A method is provided that involves a wall configured to circumscribe and be radially adjacent a rotor. During this method, a tri-axial capacitance probe is provided that includes a tri-axial conduit with an outer conductor member. ... United Technologies Corporation

03/22/18 / #20180080688

Gas turbine engine with transcritical vapor cycle cooling

A gas turbine engine has a compressor section, a combustor, and a turbine section. An associated fluid is to be cooled and an associated fluid is to be heated. ... United Technologies Corporation

03/22/18 / #20180080477

Anti-rotation stator vane assembly

A vane assembly may comprise an engine case and an anti-rotation lug coupled to the engine case. The anti-rotation lug may have a forward end and an aft end. ... United Technologies Corporation

03/22/18 / #20180080476

Geared turbofan front center body thermal management

An assembly for use in a gas turbine engine includes a center body support section including inner and outer annular walls, a plurality of struts, and a heat shield. The outer annular wall is disposed radially outward of the inner annular wall and a plurality of struts connect the inner and outer annular walls. ... United Technologies Corporation

03/22/18 / #20180080472

Gas turbine engine airfoil

A compressor may include an airfoil configured to rotate about an axis. The airfoil may have a span measured radially from a root of the airfoil to a tip of the airfoil. ... United Technologies Corporation

03/22/18 / #20180080454

Segmented stator vane

A vane assembly may include a vane comprised of a composite material. An outer shroud segment may be disposed at radially outer end of the vane. ... United Technologies Corporation

03/22/18 / #20180080389

Gas turbine engine with heat exchanger diagnostics

A gas turbine engine has a compressor section and a turbine section. A secondary cooling air includes a first fluid connection to tap cooling air and pass the cooling air through a plurality of tubes, and a second fluid connection for returning air from the tubes back to at least one of the compressor and turbine for cooling. ... United Technologies Corporation

03/22/18 / #20180080383

Gas turbine engine with intercooled cooling air and turbine drive

A gas turbine engine has a compressor section with a downstream most end and a cooling air tap at a location spaced upstream from the downstream most end. The cooling air tap is passed through at least one boost compressor and at least one heat exchanger, and then passed to a turbine section to cool the turbine section. ... United Technologies Corporation

03/22/18 / #20180080373

Split compressor turbine engine

A turbine engine includes a first compressor and a second compressor fluidly parallel to the first compressor. A reverse flow combustor is fluidly connected to the first compressor and the second compressor. ... United Technologies Corporation

03/22/18 / #20180080335

Gas turbine engine sealing arrangement

A sealing arrangement for a gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a groove that extends between an upstream rail and a downstream rail, a complementary static structure spaced from the groove, and a seal positioned within the groove and configured to seal a clearance between at least one of the upstream rail and the downstream rail and the complementary static structure.. . ... United Technologies Corporation

03/22/18 / #20180080334

Flowpath component for a gas turbine engine including a chordal seal

A flow path component includes a platform having at least one radially aligned face. A chordal seal extends axially from the radially aligned face. ... United Technologies Corporation

03/15/18 / #20180073970

Oil debris monitoring (odm) using active valve configuration control

A gas turbine engine, a method, and a system for detecting oil debris are provided. The gas turbine engine includes an oil debris monitor sensor configured to detects oil debris in an oil flow, and generate a sensor signal based on the detected oil debris, a controller configured to control the oil flow through the oil debris monitor sensor using a plurality of valves, and a signal processor configured to receive the sensor signal from the oil debris monitor and to receive a valve system configuration from the controller, the signal processor further configured to generates a health indicator based on the sensor signal and valve configuration.. ... United Technologies Corporation

03/15/18 / #20180073737

Wall panel assembly for a gas turbine engine

A wall panel assembly includes a first liner panel and a coating. The first liner panel has an inner first liner panel surface and a first liner panel outer surface each axially extending between a first liner panel first end and a first liner panel second end. ... United Technologies Corporation

03/15/18 / #20180073519

Fan blade with structural spar and integrated leading edge

An airfoil includes a leading edge, a trailing edge, a pressure side extending between the leading and the trailing edge, and a suction side that is disposed opposite the pressure side extending between the leading edge and the trailing edge. The airfoil further includes a spar and a structural member. ... United Technologies Corporation

03/15/18 / #20180073517

Full-span forward swept airfoils for gas turbine engines

Rotor of a gas turbine engines having a rotor hub and a plurality of blades extending from the rotor hub, wherein each blade has a full-span forward sweep along a leading edge of the blade that starts at an airfoil root of the blade at the hub and extends to a blade tip, wherein a sweep of a blade is a percentage of a root axial chord length of the respective blade.. . ... United Technologies Corporation

03/15/18 / #20180073441

Load estimation for a twin-engine helicopter

A method and control system for an aircraft using a gas turbine engine is provided. The control system includes a controller that includes a load and engine control modules and communicates control signals to a plant that includes a gas generator and a rotor load, an engine estimation module that receives engine state measurements and effector feedback/command signals from the controller and communicates a power turbine torque estimate, and a load estimation module that receives signals including the power turbine torque estimate, a first power turbine speed value, a first power turbine torque value, a second power turbine speed value, a second power turbine torque value, and a rotor speed value. ... United Technologies Corporation

03/15/18 / #20180073395

Auxiliary journal oil supply system

A fluid circulation system may comprise a main pump configured to provide oil to a journal bearing. An auxiliary system including a pump system may be configured to provide oil to the journal bearing. ... United Technologies Corporation

03/15/18 / #20180073393

Flexible support structure for a geared architecture gas turbine engine

A gas turbine engine includes a fan that has fan blades. A fan shaft is drivingly connected to the fan. ... United Technologies Corporation

03/15/18 / #20180073392

Gas turbine engine with high speed low pressure turbine section and bearing support features

A gas turbine engine according to an example of the present disclosure includes, among other things, a fan and a turbine section including a fan drive turbine and a second turbine. The fan drive turbine has a first exit area at a first exit point and is rotatable at a first speed. ... United Technologies Corporation

03/15/18 / #20180073380

Fluid flow assembly

A fluid flow assembly may include an orifice plate having a set of orifices and a plenum defined by a blade outer air seal. The set of orifices may be aligned with and in fluid communication with the plenum. ... United Technologies Corporation

03/15/18 / #20180073369

Gas turbine engine airfoil with showerhead cooling holes near leading edge

An airfoil for a gas turbine engine includes pressure and suction side walls joined to one another at leading and trailing edges to provide an exterior airfoil surface. The pressure and suction side walls are spaced apart from one another in a thickness direction. ... United Technologies Corporation

03/15/18 / #20180073152

Method for corrosion inhibiting additive

A method of selecting a corrosion-inhibiting substance includes selecting a corrosion-inhibiting substance to include a non-tungstate anodic corrosion inhibitor with respect to an amount of zinc in an aluminum alloy substrate that is to be coated with the corrosion-inhibiting substance.. . ... United Technologies Corporation

03/15/18 / #20180073129

Ebpvd columnated vapor stream

An electron beam vapor deposition process for depositing coatings includes placing a source coating material in a crucible of a vapor deposition apparatus; energizing the source coating with an electron beam raster pattern that delivers a controlled power density to the material in the crucible forming a vapor cloud from the source coating material; and depositing the source coating material onto a surface of a work piece.. . ... United Technologies Corporation

03/08/18 / #20180066781

Triple-weld fitting

Disclosed is a method for constructing a double walled tube assembly, comprising: welding a first axial end of a first tube to a first sub-fitting of a first fitting, sliding a second tube over the first sub-fitting and the first tube, sliding a second sub-fitting of the first fitting over the first sub-fitting such that the first and second sub-fittings are co-axial, welding a first axial end of the second tube to the second sub-fitting, and welding the second sub-fitting to the first sub-fitting. An assembly includes a first fitting that includes a first sub-fitting and a second sub-fitting, a first tube having a first axial end that is welded to the first sub-fitting, and a second tube having a first axial end that is welded to the second sub-fitting, where the first tube is nested within the second tube, where the first sub-fitting is welded to the second sub-fitting.. ... United Technologies Corporation

03/08/18 / #20180066697

Alignment tie rod device and method of utilization

An alignment tie rod device for connecting multiple components from generally opposite directions includes a shaft extending along a centerline. A first structure of the device includes opposing first and second rims and a base portion spanning between the rims. ... United Technologies Corporation

03/08/18 / #20180066673

Repeating airfoil tip strong pressure profile

A compressor section for a gas turbine engine includes a blade including a platform, a tip and an airfoil extending between the platform and tip. The airfoil includes a root portion adjacent to the platform, a midspan portion and a tip portion. ... United Technologies Corporation

03/08/18 / #20180066668

Dynamical system parameter identification for turbomachine

An aeromechanical identification system for turbomachine includes at least one actuator mounted on a stationary structure to excite rotatable airfoils. At least one sensor is mounted proximate the airfoils for measuring a response of the airfoils responsive to excitation from the at least one actuator. ... United Technologies Corporation

03/08/18 / #20180066607

Hidden thrust reverser blocker door link arm fitting

A linkage system for a nacelle may comprise a pivot configured to extend through a second aperture disposed in a link arm, a retaining member having a first end and a second end and defining a first aperture and a cavity, wherein the pivot is configured to extend at least partially into the first aperture and the cavity is configured to accommodate a portion of the link arm, and wherein the retaining member comprises an attachment aperture located at the first end and a lip extending from the retaining member at the second end, the attachment aperture configured to receive a fastener and the lip configured to be placed under a distal layer of an inner fixed structure (ifs).. . ... United Technologies Corporation

03/08/18 / #20180066590

Method for setting a gear ratio of a fan drive gear system of a gas turbine engine

In one exemplary embodiment, a gas turbine engine includes a fan section having a fan with a low corrected fan tip speed less than 1400 ft/sec. A bypass ratio is greater than 11.0 and less than 22.0. ... United Technologies Corporation

03/08/18 / #20180066587

Intercooled cooling air with dual pass heat exchanger

A gas turbine engine comprises a main compressor section having a downstream most end, and more upstream locations. A turbine section has a high pressure turbine. ... United Technologies Corporation

03/08/18 / #20180066584

Supplemental cooling air for turbine exhaust components and surfaces

A supplemental cooling air system for a turbine engine may comprise a compressor having an inlet and an outlet, and an electric motor operatively coupled to the compressor and configured to drive the compressor. The inlet may receive air from at least one of a freestream flow path, a bypass flow path, or an engine bay. ... United Technologies Corporation

03/08/18 / #20180066539

Impingement cooling with increased cross-flow area

Impingement assemblies including an impingement plate having an increased cross-flow structure that forms an increased cross-flow area between the impingement plate and an impingement surface when the impingement plate is installed proximate to the impingement surface. The increased cross-flow structure has a first portion having at least one impingement hole passing through the first portion, the first portion being separated from the impingement surface by an impingement hole height, a second portion separated from the first portion by a separation distance and separated from the impingement surface by a cross-flow structure height, and a third portion extending between the first portion and the second portion. ... United Technologies Corporation

03/08/18 / #20180066535

Real time aerodamping measurement of turbomachine

A method of health monitoring of a gas turbine engine includes mounting a detection system configured to detect an aeromechanical damping characteristic of a row of airfoils of a gas turbine. An actual aeromechanical damping characteristic of the row of airfoils is measured with the detection system. ... United Technologies Corporation

03/08/18 / #20180066533

Halo seal attached secondary seal cover arrangement

A seal sub-assembly may comprise a spacer, at least one secondary seal, and a secondary seal cover. At least a portion of the at least one secondary seal are located axially between the spacer and the secondary seal cover. ... United Technologies Corporation








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