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Sikorsky Aircraft Corporation patents


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

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Mobile pressure tool for rotor blade processes

A pressure tool for rotor blade repair including a mobile support system including a support surface, a first bladder support assembly including a first inflatable bladder fixedly mounted to the support surface, a second bladder support assembly including a second inflatable bladder pivotally mounted relative to the support surface, and... Sikorsky Aircraft Corporation

Locking mechanisms for tail rotor drive disconnect couplings

A locking mechanism for a driveshaft disconnect coupling includes an input jaw member defining a rotation axis, an output jaw member connectable to the input jaw member for common rotation with the input jaw member, and a cartridge assembly. The cartridge assembly is fixed to the input jaw member, includes... Sikorsky Aircraft Corporation

Rotor assembly including a one piece molding rotor hub

A rotor assembly for use with rotor blades and a drive shaft includes a one-piece molded rotor hub having a central hub and a plurality of hollow spindles integrally molded with and extending radially outwardly of the central hub to which rotor blades are attachable. The central hub includes a... Sikorsky Aircraft Corporation

Apparatus and methods for making rotorcraft rotor blades

A method of making a rotor blade assembly includes receiving a sheath assembly and a blade body at a blade assembly tool. The sheath assembly is spread by applying force to an interior surface of the sheath assembly. The blade body is inserted within the interior of the sheath assembly,... Sikorsky Aircraft Corporation

Cold spray process using treated metal powder

A method of applying a metal comprising titanium to a substrate is disclosed. The method comprises nitriding the surface of metal powder particles comprising titanium by contacting the particles with a first gas comprising nitrogen in a fluidized bed reactor, and depositing the metal powder particles onto the substrate with... Sikorsky Aircraft Corporation

Vehicle hatch system, an aircraft employing same and armoring a hatch of a vehicle

A vehicle hatch system includes, a frame defining a perimeter of a hatch that is releasably attachable to a hatchway of a vehicle, at least one sub-frame attached to the frame configured to allow replaceable panels to be attached to the at least one sub-frame and the frame, at least... Sikorsky Aircraft Corporation

Rotor moment control system for a rotary wing aircraft

A method of controlling rotor moments includes receiving, in a flight control computer (FCC) a rotor moment reference value based on pilot inceptor inputs, sensing rotor moment from one or more sensors, receiving, in the FCC, a rotary wing aircraft condition parameter, and establishing, through the FCC, a rotor blade... Sikorsky Aircraft Corporation

Structural masking for progressive health monitoring

A method of structural masking for progressive health monitoring of a structural component includes receiving a current image of the structural component. A processor aligns the current image and a reference image of the structural component. The processor performs a structure estimation on the current image and the reference image... Sikorsky Aircraft Corporation

Integrated vibration damper for additively manufactured structure and method

A vibration damper for an additively manufactured structure includes a structure at least partially formed with an additive manufacturing technique. Also included is a damping element embedded within the structure at an internal location of the structure. A method of damping vibration of an additively manufactured component is provided. The... Sikorsky Aircraft Corporation

Automated autorotation and pilot aiding system

A method of automating entry of an aircraft into autorotation includes detecting a loss of engine power, analyzing a sensed height and sensed airspeed of the aircraft, determining an adjusted position of one or more control surfaces of the aircraft in response to the sensed height and sensed airspeed, and... Sikorsky Aircraft Corporation

Cold spray method to join or in certain cases strengthen metals

A method of repairing or, in certain cases, strengthening a metallic substrate at a damage site is provided and includes removing material from the substrate around the damage site to form a recess, and cold spraying particulate material into the recess to form a bead of deposited material.... Sikorsky Aircraft Corporation

Enhanced durability nickel abrasion strip

An erosion strip to protect a leading edge surface is provided including an outer layer comprising a wear-resistant material. An elastomer is affixed to an interior surface of the outer layer. An adhesive layer is shaped to adhere the leading edge surface to the elastomer such that the elastomer and... Sikorsky Aircraft Corporation

Fiber optic weight sensor optimization for landing gear

A measuring system and method that computes and analyzes sensor data fused with multiple mechanical and thermally induced strain measurements is provided. Further, the measuring system and method realizes physics-based relations between sensor readings due to mechanical and thermal sources by optimally de-coupling a total strain into its mechanical and... Sikorsky Aircraft Corporation

Estimating dynamic thrust or shaft power of an engine

A measuring system is provided that includes a turbine engine thrust estimator that computes “virtual measurements” of dynamic engine thrust and other parameters of interest from test cell data in a very short amount of time. The measuring system ‘tunes’ a user's engine model, in a numerical propulsion system simulation,... Sikorsky Aircraft Corporation

Liquid shim adhesive injection tool

A tool for installing a liquid shim material into a clearance formed between an assembly first and second component includes a body having a first end and a second end. The first end includes a planar surface and the second end includes a first surface and a second surface arranged... Sikorsky Aircraft Corporation

Method of balancing a main rotor hub

A rotor system is provided including a rotor hub configured to rotate about an axis and a plurality of rotor blade assemblies mounted to the rotor hub and configured to rotate within a plane about the axis. A vibration reducing system is operably coupled to the rotor hub. The vibration... Sikorsky Aircraft Corporation

Modular packaging system for a lubricant condition monitor

An apparatus for assessment of a fluid system includes a scaffold housing with a plurality of internal cavities; a debris monitor module assembly to be selectively inserted into a first cavity of the plurality of internal cavities, the debris monitor module assembly to determine wear debris information in a lubricant;... Sikorsky Aircraft Corporation

Method and system for teaming manned and unmanned aerial vehicles

A method of teaming a manned aerial vehicle and an unmanned aerial vehicle includes inputting to a controller in a manned vehicle coordinates for an area of interest, plotting a course to the area of interest in a navigation computer operatively connected to the controller, identifying one or more unmanned... Sikorsky Aircraft Corporation

Circuit breakers with back-feed protection

A circuit breaker includes a switch with a supply terminal and a load terminal. A blocking diode is electrically connected in series between the switch and one of the supply terminal and the load terminal. The blocking diode is arranged to oppose current flow between the load terminal and the... Sikorsky Aircraft Corporation

Repair and reinforcement an aircraft

A repair and reinforcement method for an aircraft is provided. The method includes cleaning a corroded portion of a structure of the aircraft, applying an adhesive layer to the cleaned portion of the structure and forming a polymer matrix composite (PMC) patch for application to the adhesive.... Sikorsky Aircraft Corporation

Elevator and rudder control of a rotorcraft

An aircraft includes an airframe having an empennage, a counter rotating, coaxial main rotor assembly located at the airframe including an upper rotor assembly and a lower rotor assembly, and a translational thrust system positioned at the empennage and providing translational thrust to the airframe. At least two control surfaces... Sikorsky Aircraft Corporation

Attitude-coupled targeting system for rotary wing aircraft

A flight control system for an aircraft includes a flight control computer operatively interconnected with a main rotor system and a translational thrust system of the aircraft. A selectively enabled integrated target and flight control system arranged in communication with the flight control computer. The integrated target flight and control... Sikorsky Aircraft Corporation

Rotor head for prop-rotor

A rotor head is provided and includes a non-rotating frame, a rotating frame rotatable relative to the non-rotating frame and configured to impart motion to the rotating frame, a rotor hub assembly rotatable about a rotation axis and including a hub and blades extending outwardly from the hub and being... Sikorsky Aircraft Corporation

Variable amplitude force generator

A force generator includes a hub, which is rotatable about an axis thereof, an elongate member coupled to the hub such that the elongate member is rotatable with the hub and extends radially outwardly away from the hub and the axis along a radial dimension defined with respect to the... Sikorsky Aircraft Corporation

Trim tab retention system, an aircraft employing same and a retaining a trim tab within a blade housing

A trim tab for use in a blade housing includes a cavity connected to an opening extending from the cavity out a trailing edge of the blade housing, the cavity has a first dimension which is greater than a second dimension of the opening at a same spanwise location of... Sikorsky Aircraft Corporation

Main rotor trim tab retention system, an aircraft employing same and a replacing a trim tab assembly from blade housing

A main rotor trim tab retention system includes, a blade housing having flanges separated by a cavity defined between the flanges, and a trim tab assembly. The trim tab assembly includes, a trim tab having an aerodynamic surface, at least one arm extending from the trim tab positionable within the... Sikorsky Aircraft Corporation

Fastening systems

A fastening system includes an anchoring structure defining a threaded bore. A stud or insert is threaded into the threaded bore. A lockring is fixed to the stud or insert to prevent relative rotation of the stud or insert and lockring. The lockring includes a key extending radially outward from... Sikorsky Aircraft Corporation

Masking plug for cold spray repair at counterbore hole

A method of improving a structure of a component adjacent a feature is provided including removing a portion of the structure including at least one area where damage of corrosion has occurred or is likely to occur to expose a surface of the structure. A masking plug is installed into... Sikorsky Aircraft Corporation

Vibration control assembly for an aircraft and controlling aircraft vibration

A vibration control assembly for an aircraft including a housing operatively coupled to the aircraft. Also included is a cage disposed within an interior region of the housing, the cage rotatable within the housing about a first axis. Further included is a gyroscope wheel disposed within the cage and rotatable... Sikorsky Aircraft Corporation

Aircraft rotor blade with reduced stress

An aircraft rotor blade includes a surface of the rotor blade, at least one main hole that extends through the surface and has a width and a length, and at least one leader hole that extends through the surface and has a length that is less than the length of... Sikorsky Aircraft Corporation

Steady state differential roll moment control with automated differential lateral control

A method for controlling a differential rotor roll moment for a coaxial helicopter with rigid rotors, the method including receiving, with a processor, a signal indicative of a displacement command from a controller; receiving, with the processor via a sensor, one or more signals indicative of a longitudinal velocity, an... Sikorsky Aircraft Corporation

Delta fuselage for vertical take-off and landing (vtol) aircraft

A vertical take-off and landing (VTOL) aircraft is provided. The aircraft includes a wing, nacelles supportively disposed at opposite ends of the wing, proprotors respectively attached to each of the nacelles with each of the proprotors being rotatable to generate lift in vertical flight and thrust in horizontal flight and... Sikorsky Aircraft Corporation

Lubricant level sensing for an actuator

According to one aspect, a lubricant level sensing system for an actuator is provided. The lubricant level sensing system includes a pressure port in an outer housing of the actuator, a pressure sensor, and a pathway from the pressure port to the pressure sensor. The pathway establishes fluid communication between... Sikorsky Aircraft Corporation

Virtual tachometers based on time series filtering

A system and method for receiving a plurality of first inputs from a transducer, where the plurality of first inputs correspond to vibrations of a rotational machine, and filtering the plurality of first inputs to derive a frequency of interest. The system and method then generates a sinusoidal signal at... Sikorsky Aircraft Corporation

On-demand tool kits

An on-demand system for manufacturing service tools is provided. The system includes a digital manual including instructions for service/repair configured to be accessible by a computing device and a library containing one or more additive manufacturing files configured to be accessible by the computing device. An additive manufacturing printer is... Sikorsky Aircraft Corporation

11/23/17 / #20170336789

Task allocation and variable autonomy levels

A system and method for flying an aircraft is disclosed. The system includes one or more flight-assist agents for performing an operation related to flying the aircraft and a vehicle autonomy management system. The vehicle autonomy management system allocates tasks of a task workload involved in the operation between a... Sikorsky Aircraft Corporation

11/23/17 / #20170336809

High-authority yaw control for a tandem vehicle with rigid rotors

A method for executing yaw control of an aircraft including two rotors is provided. The method includes inducing helicopter yaw by creating a differential torque between the two rotors, wherein the creating of the differential torque comprises inducing a differential collective pitch to generate a differential thrust, and maintaining helicopter... Sikorsky Aircraft Corporation

11/23/17 / #20170337081

Centralized processing for aircraft operations

A system for centralizing computing operations for an aircraft, including a plurality of aircraft subsystems associated with the aircraft, a plurality of aircraft sensors associated with the aircraft, and a centralized processor to process the computing operations requested by each of the plurality of aircraft subsystems.... Sikorsky Aircraft Corporation

11/16/17 / #20170327209

Multi-objective control system with control allocation

A flight system for an aircraft and method for controlling a clearance between a first rotor disk and a second rotor disk of an aircraft is disclosed. The flight system includes a sensor for measuring an angle of deviation of at least one of a first rotor disk and a... Sikorsky Aircraft Corporation

11/16/17 / #20170327215

Directional stiffness bearing sleeve assembly for rotor systems

A bearing sleeve assembly includes a rigid inner element having a cylindrical inner diameter bore and an outer surface that is non-cylindrical. Also included is a rigid outer element spaced radially outwardly from the rigid inner element, the rigid outer element comprising a cylindrical member with a uniform cross-section that... Sikorsky Aircraft Corporation

11/16/17 / #20170327217

Composite reinforced swashplate

A swashplate of a blade pitch control assembly is provided including a metal component having one or more interfacing features. The metal component includes a hollow first cylinder having a first flange extending outwardly from a first end thereof and a second flange extending outwardly from a second end thereof.... Sikorsky Aircraft Corporation

11/16/17 / #20170327219

Vertical take-off and landing aircraft with hybrid power and method

A vertical take-off and landing aircraft including a wing structure including a wing, a rotor operatively supported by the wing, and a hybrid power system configured to drive the rotor, the hybrid power system including a first power system and a second power system, wherein a first energy source for... Sikorsky Aircraft Corporation

11/16/17 / #20170329349

Flexible command model for aircraft control

Two methods of combining multiple response types into a single flexible command model are provided and include receiving a pilot stick input, generating an aircraft response to the pilot stick input that is a continuous blend of response types by including calculable time-varying coefficients set as a function of a... Sikorsky Aircraft Corporation

11/16/17 / #20170331239

Memory device having first and second parts

A memory device includes first and second parts. The first part includes a plug receiver configured for reception of a plug and a head coupled to the plug receiver. The second part includes a cap end and a dummy socket coupled to the cap end. The dummy socket includes a... Sikorsky Aircraft Corporation

11/16/17 / #20170331844

Systems and methods for assessing airframe health

A method of assessing structural health includes receiving an anomaly detector, receiving an anomaly detection threshold, and receiving a strain measurement for a structure of interest. A rating is generated for the strain measurement using the anomaly detector and compared with the anomaly detection threshold. Health of the structure of... Sikorsky Aircraft Corporation

11/09/17 / #20170322069

Measurement system for aircraft, aircraft having the same, and measuring weight for aircraft

A system for weight measurement for an aircraft having a weight on wheels threshold between a flight mode and a ground mode includes a weight on wheels sensor arrangeable on a landing gear assembly of the aircraft, and a computing device receiving first detected data from the sensor related to... Sikorsky Aircraft Corporation

11/02/17 / #20170312911

Upholstery interior installation tool

A panel installation tool is provided that includes a first portion configured to releasably engage with a panel, a second portion attached to the first portion and configured to releasably engage a structural component to retain the first portion with respect to the structural component, and a location indicator configured... Sikorsky Aircraft Corporation

11/02/17 / #20170313280

Vehicle access control system and method

A vehicle access and control system includes an activation system, a vehicle control system, a communication system provided in the vehicle, a computer system mounted in the vehicle, and a vehicle access control system including a processor, a non-volatile memory, and a set of instructions stored on the non-volatile memory.... Sikorsky Aircraft Corporation

11/02/17 / #20170315563

Flight control system for a rotary wing aircraft

A rotary wing aircraft includes an airframe including an extending tail. The airframe includes a longitudinal axis that extends through the extending tail. The rotary wing aircraft also includes a main rotor assembly including at least one rotor hub supporting a plurality of rotor blades configured and disposed to rotate... Sikorsky Aircraft Corporation

10/26/17 / #20170305534

Rotorcraft systems to reduce pilot workload

An aircraft includes an airframe having an extending tail, a counter rotating, coaxial main rotor assembly disposed at the airframe including an upper rotor assembly and a lower rotor assembly, and a translational thrust system positioned at the extending tail and providing translational thrust to the airframe. A fly by... Sikorsky Aircraft Corporation

10/26/17 / #20170305539

Rotorcraft footprint

An aircraft includes an airframe having an extending tail and a longitudinal axis extending from a nose of the airframe defining a length of the airframe. A counter rotating, coaxial main rotor assembly is located at the airframe and includes an upper rotor assembly and a lower rotor assembly. The... Sikorsky Aircraft Corporation

10/26/17 / #20170305540

Noise modes for rotary wing aircraft

A method of controlling noise of an aircraft includes storing a plurality of predefined noise modes; receiving a selection of a selected noise mode from the plurality of predefined noise modes, the selected noise mode identifying at least one operational parameter; and controlling the aircraft in response to the at... Sikorsky Aircraft Corporation

10/26/17 / #20170305543

Sealed hub and shaft fairing for rotary wing aircraft

An aircraft includes an airframe; an extending tail; a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly; a translational thrust system positioned at the extending tail, the translational thrust system providing translational thrust to the airframe; an upper hub fairing positioned at... Sikorsky Aircraft Corporation

10/26/17 / #20170305544

Turn radius and bank angle for rotary wing aircraft

An aircraft composed of an airframe, an extending tail, a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly, and a translational thrust system positioned at the extending tail. The translational thrust system provides translational thrust to the airframe. The aircraft includes a... Sikorsky Aircraft Corporation

10/26/17 / #20170307090

Hydraulic actuator force fight mitigation mechanism

A control valve for a multi-stage hydraulic actuator includes a valve body defining a translation axis, a spool disposed within the valve body and movable along the translation axis, and a flange. The flange is fixed relative to the spool and has an aperture disposed externally of the valve body... Sikorsky Aircraft Corporation

10/26/17 / #20170307402

Synthetic vision augmented with multispectral sensing

A method for augmenting a synthetic vision system of a vehicle includes receiving, with a processor, signals indicative of real-time sensor data of a terrain for the vehicle via one or more acquisition devices; creating, with the processor, a terrain mesh of the terrain in response to the receiving of... Sikorsky Aircraft Corporation

10/26/17 / #20170307646

Airspeed estimation system

An airspeed estimation system of an aircraft includes an electronic airspeed rate modeler unit configured to output an estimated airspeed rate signal indicating an estimated airspeed rate of the aircraft. The estimated airspeed rate signal is based on a longitudinal body acceleration of the aircraft and at least one adaptive... Sikorsky Aircraft Corporation

10/26/17 / #20170308101

Aircraft and orienting an airframe of an aircraft

An aircraft includes an airframe, an extending tail, a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly, a translational thrust system positioned at the extending tail, the translational thrust system providing translational thrust to the air-frame; and a horizontal stabilizer positioned at... Sikorsky Aircraft Corporation

10/26/17 / #20170308102

Space partitioning for motion planning

An aspect includes space partitioning for vehicle motion planning. A plurality of obstacle data is analyzed to determine a plurality of obstacle locations in a configuration space of a vehicle. A partitioning of the configuration space is performed to compute a skeletal partition representing a plurality of obstacle boundaries based... Sikorsky Aircraft Corporation

10/26/17 / #20170308726

Magnetic identification assembly and identifying a component

An embedded magnetic identification assembly includes a base component formed of a material. Also included is a plurality of elements formed in an array at a surface of the base component, wherein the plurality of elements is formed of a magnetic material.... Sikorsky Aircraft Corporation

10/19/17 / #20170297185

Non-destructive cold extractions of press fit bushings

An assembly for removing a bushing is provided including a mandrel having a size and shape similar to the bushing and a receiver having a hollow interior cavity. A fastener extends through an opening formed in both the mandrel and the receiver. A socket attachment has a first opening configured... Sikorsky Aircraft Corporation

10/19/17 / #20170297678

Blade fold system using flap hinge

A rotor system of a tail-sitter aerial vehicle configured to rotate about an axis of rotation is provided including a rotor hub which rotates about the axis of rotation and at least one rotor blade operably coupled to the rotor hub. The at least one rotor blade is configured to... Sikorsky Aircraft Corporation

10/19/17 / #20170297683

Nose gear steering shipboard operations

A steering assembly includes a movable anchor. Movement of the anchor in a first direction is restricted. A first linkage is coupled to the anchor and a second linkage it rotatably coupled to the first linkage. The second linkage is configured to couple to a contactor. A drive mechanism moves... Sikorsky Aircraft Corporation

10/19/17 / #20170297686

Anti-vibration moment generating aircraft actuation system

An aircraft is provided and includes an airframe, an engine, a drive portion driven by the engine, a rotor apparatus, which includes a rotor rotatable relative to the airframe and a fairing, a gearbox disposed to transmit rotational energy from the drive portion to the rotor to drive the rotor... Sikorsky Aircraft Corporation

10/19/17 / #20170297688

Integrated main rotor hub and shaft

A main rotor system for a rotary wing aircraft is provided including a lower rotor hub to which lower rotor blades are attachable. The lower rotor hub rotates about an axis in a first direction. A hollow rotor shaft extends through the lower rotor hub. The first end of the... Sikorsky Aircraft Corporation

Patent Packs
10/19/17 / #20170297689

Electric propulsion system for a rotary wing aircraft

A rotary wing aircraft includes an airframe, a stationary mast fixedly engaged to the airframe and extending along a first axis, and an electric motor. The electric motor includes a stator assembly engaged to the mast and a rotor assembly disposed radially outward from the stator assembly and configured to... Sikorsky Aircraft Corporation

10/19/17 / #20170297690

Hub separation in dual rotor rotary wing aircraft

An aircraft includes an airframe; an extending tail; a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly; and a translational thrust system positioned at the extending tail, the translational thrust system providing translational thrust to the airframe; wherein a ratio of (i)... Sikorsky Aircraft Corporation

10/19/17 / #20170297691

Cylindrical elastomeric bearing with tapered shims

A cylindrical elastomeric bearing including a plurality of elastomeric layers arranged about a central bore. The elastomeric layers are characterized by a middle portion having a first thickness and two outer portions having a second thickness, the second thickness being greater than the first thickness, the one or more elastomeric... Sikorsky Aircraft Corporation

10/19/17 / #20170297692

Rotary wing aircraft

A rotary wing aircraft includes an airframe, one or more engines supported by the airframe, and a plurality of rotor blades operatively connected to the one or more engines. Each of the plurality of rotor blades includes a rotor lift-to-drag (L/De) ratio greater than 9 at airspeeds between about 150... Sikorsky Aircraft Corporation

10/19/17 / #20170297693

Feed-forward compensation for gyroscopic loads in a coaxial rotor

A system and method for counteracting a rotor moment of one or more rotors of a coaxial rotor helicopter includes receiving signals with a processor indicative of a displacement command from a controller during a flight maneuver; receiving one or more signals with the processor from a sensor indicative of... Sikorsky Aircraft Corporation

10/19/17 / #20170297694

Rotor speed management

A flight control system for a rotorcraft includes a controller configured to receive input indicative of ambient conditions, determine a threshold rotor blade tip speed based on the input, and to output rotor control commands to prevent rotor blade tips from exceeding the threshold speed. An aircraft includes an airframe,... Sikorsky Aircraft Corporation

10/19/17 / #20170297696

Aircraft main rotor drag to airframe drag

An aircraft includes an airframe having an extending tail and a counter rotating, coaxial main rotor assembly disposed at the airframe including an upper rotor assembly and a lower rotor assembly. A translational thrust system is positioned at the extending tail and provides translational thrust to the airframe. An airframe... Sikorsky Aircraft Corporation

10/19/17 / #20170297697

Rotorcraft configuration and rotorcraft design

A rotorcraft is provided and includes a fuselage. The fuselage includes drag generating portions, a main rotor assembly and an auxiliary propulsor having an expected propulsion efficiency. The auxiliary propulsor is disposed to ingest boundary layer flows and in wake regions associated with the drag generating portions and is provided... Sikorsky Aircraft Corporation

10/19/17 / #20170297698

Tiltwing aircraft

An aircraft includes a fuselage defining an aircraft attitude axis. The fuselage houses an engine fixed relative to the aircraft attitude axis. A rotor assembly is operatively connected to rotate back and forth relative to the aircraft attitude axis from a first position predominately for lift to a second position... Sikorsky Aircraft Corporation

10/19/17 / #20170297699

Quad rotor tail-sitter aircraft with rotor blown wing (rbw) configuration

A tail-sitter aircraft is provided and includes a fuselage having first and second axisymmetric sides, first collectively controllable prop-rotors, which are formed to define a first pair of rotor disks and which are respectively supported at the first axisymmetric side of the fuselage, and second collectively controllable prop-rotors, which are... Sikorsky Aircraft Corporation

10/19/17 / #20170297732

Power leveling controller

The disclosure herein relates to power leveling mechanisms comprising a high frequency controller. The power leveling mechanism receives a power demand signal indicating a power requirement of a vehicle and determines a high frequency component of the power demand signal. The power leveling mechanism also provides a signal to a... Sikorsky Aircraft Corporation

10/19/17 / #20170299040

Damage mitigation for gearbox

A gearbox housing of an aircraft includes a surface configured to contact with and support a load of a component of the aircraft such that the surface is susceptible to corrosion. The surface has an area from which a portion of material was removed. A structural deposit is formed by... Sikorsky Aircraft Corporation

10/19/17 / #20170299346

Armor structures

A method for manufacturing armor includes coating a first side of a ballistics arresting core with a first shell layer to create a partially coated ballistics arresting core, placing the partially coated ballistics arresting core in a vacuum bag and depressurizing the vacuum bag and curing the partially coated ballistics... Sikorsky Aircraft Corporation

10/19/17 / #20170300737

Context-based autonomous perception

A method of performing context-based autonomous perception is provided. The method includes acquiring perception sensor data as an image by an autonomous perception system that includes a processing system coupled to a perception sensor system. Feature extraction is performed on the image by the autonomous perception system. The feature extraction... Sikorsky Aircraft Corporation

10/12/17 / #20170291689

Propeller diverter duct

A diverter duct for a propeller includes a second duct element having a semi-annular wedge shape, which is pivotably coupled to the first duct element, a first drive structure configured to drive a pivoting of the second duct element relative to the first duct element and a second drive structure... Sikorsky Aircraft Corporation

Patent Packs
10/12/17 / #20170291690

High trim demand relieft

A flight control system includes a flight control computer operable in a flight state and a ground state. A high demand trim relief logic is operable by the flight control computer in the ground state. The high demand trim relief logic is configured to automatically modify the neutral position of... Sikorsky Aircraft Corporation

10/12/17 / #20170291699

Dual rotor, rotary wing aircraft

A main rotor blade assembly for a rotary wing aircraft is provided including a main rotor blade root region, a main rotor blade inboard region arranged outboard of said main rotor blade root region, a main rotor blade main region arranged outboard of said main rotor blade inboard region, and... Sikorsky Aircraft Corporation

10/12/17 / #20170291702

Collective to elevator mixing of a rotary wing aircraft

An aircraft is provided including an airframe, an extending tail, and a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly. A translational thrust system positioned at the extending tail, the translational thrust system providing translational thrust to the airframe. A horizontal stabilizer... Sikorsky Aircraft Corporation

10/12/17 / #20170291711

Model based contact predictor

An impact mitigation system for an aircraft and method of deploying the impact mitigation system is disclosed. A state parameter of the aircraft is obtained. The state parameter is used with an aircraft performance model to determine an acceleration capability of the aircraft. A trajectory of the aircraft is predicted... Sikorsky Aircraft Corporation

10/12/17 / #20170291718

Sea state estimation

A method for measuring sea state includes scanning an area of a waterborne moving object over a period of time using at least one sensor to obtain point cloud data of the moving object. The area of the moving object is identified based on the point cloud data. Changes in... Sikorsky Aircraft Corporation

10/12/17 / #20170291724

Systems and methods for separating rotor blade cuffs from rotor blade bodies

A rotor blade disassembly method includes applying spanwise support to a rotor blade body and heating a bond disposed on an end of the rotor blade body. The method also includes removing the spanwise support from the rotor blade body and exerting shear stress on the bond using weight of... Sikorsky Aircraft Corporation

10/12/17 / #20170294008

Apparatus for detecting corrosion in an article

A system and method of detecting, quantifying, and characterizing corrosion and degradation of an article, includes receiving signals indicative of a stack of images of a surface of the article; determining depth and nature of features in the stack of images; generating a surface model of the article in response... Sikorsky Aircraft Corporation

10/05/17 / #20170282413

Composite laminate tooling and forming a composite part using the tooling

A composite piece tool used to create a composite piece. The tool includes a substrate having a substrate surface, walls disposed on the substrate and extending from the substrate surface in a thickness direction of the composite piece to define opposite locations of longitudinal composite piece ends and composite piece... Sikorsky Aircraft Corporation

10/05/17 / #20170283044

Damage adaptive vibration control

A method of operating a vibration control system (VCS) using a single actuator which operates to attenuate a system frequency of a system is provided. The method includes determining whether current vibrations at a non-system frequency exceed a predefined level, determining a system response to compensate for the current vibrations... Sikorsky Aircraft Corporation

10/05/17 / #20170283045

Translation thrust system engagement and disengagment for rotary wing aircraft

An aircraft is provided including an airframe, an extending tail, one or more engines supported by the airframe, and a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly. A translational thrust system positioned at the extending tail. The translational thrust system providing... Sikorsky Aircraft Corporation

10/05/17 / #20170283046

Sealed hub and shaft fairing for rotary wing aircraft

An aircraft includes an airframe; an extending tail; a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly; a translational thrust system positioned at the extending tail, the translational thrust system providing translational thrust to the airframe; an upper hub fairing positioned at... Sikorsky Aircraft Corporation

10/05/17 / #20170283047

Main rotor rotational speed control for rotorcraft

An aircraft includes an airframe having an extending tail, a counter rotating, coaxial main rotor assembly disposed at the airframe including an upper rotor assembly and a lower rotor assembly and a translational thrust system positioned at the extending tail and providing translational thrust to the airframe. A flight control... Sikorsky Aircraft Corporation

10/05/17 / #20170283049

Differential pre-cone rotary wing arrangement and aircraft

A differential pre-cone rotary wing arrangement includes a first rotor assembly having a first set of rotor blades rotatable about an axis, the first set of rotor blades having a first pre-cone angle, and a second rotor assembly having a second set of rotor blades rotatable about the axis, the... Sikorsky Aircraft Corporation

10/05/17 / #20170283078

Icing detection systems

A system for detecting icing includes an optical sensor configured to view at least a portion of an exterior surface or component of an aircraft and to output sensor data indicating at least one optical quality of the exterior surface or component, and an icing detection module. The icing detection... Sikorsky Aircraft Corporation

10/05/17 / #20170283087

Sensor-based detection of landing zones

A method of detecting a landing zone includes scanning an area using a sensor system to obtain data of the area. One or more markings are identified from the data. The one or more markings are verified as corresponding to an intended landing zone.... Sikorsky Aircraft Corporation

10/05/17 / #20170284795

Systems and methods for controlling rotorcraft external loads

A method of determining cable angle includes acquiring image data of a cable and a load coupled to a rotorcraft using three-dimensional (3D) spatial perception system, constructing an image of the cable and load using the image data, and determining the angle of the cable relative to the external load... Sikorsky Aircraft Corporation

10/05/17 / #20170285638

Unmanned vehicle operating modes

A vehicle includes a frame, drive elements configured to drive movements of the frame, and a computer configured to receive mission planning and manual commands and to control operations of the drive elements to operate in a safe mode in which mission commands are accepted but manual commands are refused,... Sikorsky Aircraft Corporation

10/05/17 / #20170285660

Touchdown orientation control system for a rotary wing aircraft and method

A rotary wing aircraft control system includes an airframe, a main rotor assembly supported by the airframe, and a control system arranged in the airframe and operatively connected to the main rotor assembly. The control system includes a flight control computer (FCC), at least one control inceptor device and a... Sikorsky Aircraft Corporation

10/05/17 / #20170285662

Haptic feedback for realtime trajectory constraints

A system for receiving feedback in a flight plan of a vehicle includes a haptic-enabled device comprising a crew seat with an inceptor mounted thereto; and a processor with memory having instructions stored thereon that, when executed by the processor, cause the system to: receive signals indicative of the flight... Sikorsky Aircraft Corporation

09/28/17 / #20170274449

Cast component and methods of manufacturing with cold spraying

A cast component includes a cast structure having a primary geometry formed by a mold. Also included is a structural deposit formed by cold spraying one or more layers of powdered material on an outer surface of the cast structure, the structural deposit defining at least one feature of the... Sikorsky Aircraft Corporation

09/28/17 / #20170274701

Microclimate controlled pad for effective paint stripping

An assembly for removing a desired portion of one or more layers of paint or another coating from a designated area is provided including a pad soaked with a chemical paint remover and an adhesive layer arranged about the pad configured to couple the assembly to the designated area. A... Sikorsky Aircraft Corporation

09/28/17 / #20170274987

Single collective stick for a rotary wing aircraft

An aircraft is provided including an airframe, an extending tail, and a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly. A translational thrust system positioned at the extending tail, the translational thrust system providing translational thrust to the airframe. A cockpit in... Sikorsky Aircraft Corporation

09/28/17 / #20170274990

Rotor hover figure of merit for rotary wing aircraft

An aircraft composed of an airframe, an extending tail, a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly, and a translational thrust system positioned at the extending tail. The translational thrust system provides translational thrust to the airframe. The aircraft also includes... Sikorsky Aircraft Corporation

09/28/17 / #20170274994

Dual rotor, rotary wing aircraft

An aircraft is provided including an airframe, an extending tail, a counter-rotating, coaxial main rotor assembly having an upper rotor assembly and a lower rotor assembly, and a translational thrust system including a propeller positioned at the extending tail. The translational thrust system is configured to provide translational thrust to... Sikorsky Aircraft Corporation

09/28/17 / #20170275006

Blade heater mat insulation

A heater mat assembly for a rotor blade spar is provided including a plurality of electrically conductive heater wires extending in a spaced parallel configuration along a path of the rotor blade spar. An electrical current is flowed through the plurality of heater wires to inhibit ice accumulation on a... Sikorsky Aircraft Corporation

09/28/17 / #20170275011

Power management between a propulsor and a coaxial rotor of a helicopter

One aspect is a flight control system for a rotary wing aircraft that includes flight control computer configured to interface with a main rotor system, a translational thrust system, and an engine control system. The flight control computer includes processing circuitry configured to execute control logic. The control logic includes... Sikorsky Aircraft Corporation

09/28/17 / #20170275014

Rotorcraft rotor and propeller speed

An aircraft includes an airframe having an extending tail, a counter rotating, coaxial main rotor assembly disposed at the airframe including an upper rotor assembly and a lower rotor assembly, and a translational thrust system positioned at the extending tail and providing translational thrust to the airframe, the translational thrust... Sikorsky Aircraft Corporation

09/28/17 / #20170276482

Multi-sensor target location registration

A system for registering a target includes a first sensor, a second sensor, and a processor. The first sensor measures a plurality of ranges from a source to a target, and the second sensor obtains a plurality of location measurements of the source. The system further includes a processor configured... Sikorsky Aircraft Corporation

09/28/17 / #20170277201

Nose attitude control of a rotary wing aircraft

An aircraft is provided including an airframe, an extending tail, and a counter rotating, coaxial main rotor assembly including an upper rotor assembly and a lower rotor assembly. A translational thrust system positioned at the extending tail, the translational thrust system providing translational thrust to the airframe. The main rotor... Sikorsky Aircraft Corporation

09/28/17 / #20170277995

Vibration signatures for prognostics and health monitoring of machinery

A system and method for providing health indication of a mechanical system, includes receiving signals indicative of vibration data of the mechanical system; pre-training features in the signals with a model; determining information related to vibration signatures in the signals; associating the vibration signatures with historical vibration data of the... Sikorsky Aircraft Corporation

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09/28/17 / #20170278403

Mission parameterization system

A system for mission parameterization is provided and includes a vehicle that itself includes a sensor to sense characteristic sensed elements in surroundings of the vehicle and a computing device. The computing device includes a processing unit and a memory unit. The memory unit has a database configured to associate... Sikorsky Aircraft Corporation








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