公开(公告)号：US20220173677A1

公开(公告)日：2022-06-02

申请号：US17674419

申请日：2022-02-17

申请人： PRATT & WHITNEY CANADA CORP.

发明人： Eric LATULIPE ,  Richard FREER

IPC分类号： H02P6/12 ,  B64D35/08 ,  H02K47/04 ,  B64D27/02 ,  B64D27/10 ,  B64D27/24 ,  B64D31/06 ,  F01D15/10 ,  F02K3/06 ,  H02P5/74 ,  H02P9/00 ,  B64D27/26 ,  B64D31/00 ,  H02K51/00 ,  H02P17/00 ,  B60L50/13 ,  B60L50/60 ,  B60L53/24 ,  B60L50/51 ,  B64D27/12 ,  H02K19/34 ,  H02P6/00 ,  B64D35/02 ,  G08C19/38 ,  H02K41/03 ,  B64D35/00 ,  H02P29/028 ,  H02P29/024

摘要： A hybrid electric aircraft propulsion system and method of operation are described. The system comprises a thermal engine, a generator coupled to the thermal engine, a first electric propulsor operatively connected to the generator to receive alternating current (AC) electric power therefrom, a second electric propulsor, a generator inverter operatively connected to the generator to convert AC electric power to direct current (DC) electric power, and a first motor inverter operatively connected to the generator inverter and selectively connected to one of the first electric propulsor and the second electric propulsor and configured to receive the DC electric power and provide the first electric propulsor and the second electric propulsor with AC electric power, respectively.

公开(公告)号：US11306813B2

公开(公告)日：2022-04-19

申请号：US16657166

申请日：2019-10-18

申请人： Bell Textron Inc.

发明人： Douglas Robert Mueller

IPC分类号： F16H57/04 ,  F16N29/02 ,  B64D35/00

摘要： An example of an emergency lubrication system for an aircraft includes a lubricant tank configured to supply a lubricant to a gearbox of the aircraft, a tube coupled between the lubricant tank and the gearbox and comprising a check ball disposed within the tube, a first lubricant line coupled to the tube and a first inlet of the gearbox, and a second lubricant line coupled to the tube and a second inlet of the gearbox.

公开(公告)号：US20220010848A1

公开(公告)日：2022-01-13

申请号：US16926451

申请日：2020-07-10

申请人： Bell Textron Inc.

发明人： Gilberto Morales ,  Carlos Alexander Fenny ,  Cody Anderson

IPC分类号： F16D41/07 ,  B64D35/00

摘要： A clutch has an inner race, an outer race spaced from the inner race and forming a radial cavity between the races, and a plurality of sprags disposed in the radial cavity. The sprags have a different coefficient of thermal expansion (CTE) from the inner race, the outer race, or both races, and a sprag cage retains the sprags at a uniform spacing within the radial cavity. When the clutch is at a first temperature, a gap exists between the sprags and the inner race, between the sprags and the outer race, or between the sprags and both races, and the clutch is disengaged. When the clutch is at a second temperature the sprags are in contact with both the races, and the clutch is engaged.

公开(公告)号：US11220330B2

公开(公告)日：2022-01-11

申请号：US15700359

申请日：2017-09-11

申请人： AIRBUS HELICOPTERS

发明人： Olivier De Meerschman

IPC分类号： F16H1/22 ,  B64D35/00 ,  B64C27/14 ,  F16H37/08

摘要： A mechanical system for transmitting rotary motion between firstly at least one inlet wheel driven in rotation by at least one engine, each inlet wheel being suitable for being driven in rotation by a corresponding dedicated engine, and secondly at least two distinct driven shafts of an accessory box, the at least one engine serving to drive rotation of one of the at least two driven shafts in isolation, or to drive the at least two driven shafts simultaneously, jointly with at least one aircraft rotor, the mechanical system including a selective rotary drive member that is movable axially between two distinct drive positions.

公开(公告)号：US20210403151A1

公开(公告)日：2021-12-30

申请号：US17236423

申请日：2021-04-21

申请人： SZ DJI TECHNOLOGY CO., LTD.

发明人： Fangming YE

IPC分类号： B64C27/32 ,  B64D35/02 ,  B64C11/10 ,  B64D35/00 ,  B64C11/00 ,  B64C27/00 ,  B64C27/08 ,  B64C39/02

摘要： A rotor assembly includes a propeller, a motor, and a connection assembly. The motor includes a stator and a rotator rotatable with respect to the stator. The connection assembly is configured to connect the propeller to the motor and includes a locking member that is arranged between the propeller and the motor. The locking member is configured to rotate with respect to the rotator and the propeller in a rotation direction identical to a rotation direction of the propeller in operation to lock the propeller to the motor.

公开(公告)号：US11170962B2

公开(公告)日：2021-11-09

申请号：US17003259

申请日：2020-08-26

申请人： Hamilton Sundstrand Corporation

发明人： John N. Buzzard ,  Francis C. Belisle

IPC分类号： F01C17/04 ,  H01H50/64 ,  B64D35/00 ,  H01H50/00 ,  H01H50/20 ,  H01H50/24 ,  H01H50/34 ,  H01H50/36

摘要： A contactor with a rotary actuation system, the contactor including a plurality of switching devices configured to switch a plurality of electrical circuits, a plurality of cam followers each operably coupled to one of the switching devices, wherein each cam follower is configured to actuate a switching device, and a cam mechanism, the cam pivotally attached to a point rotation, the cam having plurality of lobes about its perimeter, the cam in operable communication with each cam follower such that upon rotation of the cam mechanism, each cam follower engages a lobe of the plurality of lobes, it causes each cam follower to actuate the respective switching device. The contactor also includes an actuator connected to the cam, the actuator responsive to a control current and operable to rotate the cam and a controller, the controller operable to supply a control current the actuator.

公开(公告)号：US20210341051A1

公开(公告)日：2021-11-04

申请号：US17372784

申请日：2021-07-12

申请人： Textron Innovations Inc.

发明人： Scott David Poster ,  Brian Edward Tucker

IPC分类号： F16H57/08 ,  B64D35/00 ,  F16H1/28

摘要： In an embodiment, an apparatus includes: a gearbox including: a housing having an opening; an input pinion disposed in the housing; a moving feature mechanically coupled to the input pinion, the moving feature and the input pinion being operable to convert between power and torque; and first sensors disposed on the moving feature, the first sensors having batteries, where the moving feature is operable to rotate about a common axis, each of the first sensors being exposed by the opening as the moving feature rotates about the common axis.

公开(公告)号：US11156285B2

公开(公告)日：2021-10-26

申请号：US16325371

申请日：2017-08-16

申请人： Sikorsky Aircraft Corporation

发明人： David A. Binney ,  Yuriy Gmirya ,  Joseph A. Mucci ,  Jonathan Frost ,  Adam Taylor

IPC分类号： F16H55/08 ,  B64D35/00 ,  F16H57/08 ,  B64C27/14 ,  B64C27/06 ,  B64C27/12 ,  F16H1/28 ,  F16H57/01 ,  F16H57/00

摘要： A gear train includes a first gear having teeth meshed with teeth of a second gear. Each tooth of the first gear includes a coast side and a drive side opposed to the coast side. The drive side has a pressure angle that is greater than that of the coast side. The gear train can be part of a powertrain system for a rotorcraft, and can replace a traditional gear train in a retrofit or new build. The first gear is a planet gear and the second gear is a ring gear wherein the planet gear and ring gear are in a planetary gear train configuration.

公开(公告)号：US11131347B2

公开(公告)日：2021-09-28

申请号：US15933030

申请日：2018-03-22

申请人： Sikorsky Aircraft Corporation

发明人： Bertrand J. Howard ,  Christopher Briddell

IPC分类号： F16D3/72 ,  B64D35/00

摘要： A flexible coupling includes a first disc and a second disc arranged along a rotation axis. The first disc and the second disc each include a radially inner hub portion, a radially outer rim portion, and a diaphragm portion extending between the hub portion and the rim portion. The first disc rim portion is connected to the second disc rim portion and the first disc has a diametral response mode that is different than a diametral response mode of the second disc to limit deformation in the flexible coupling when communicating rotation between a drive member and a driven member connected to one another by the flexible coupling. Drive trains and methods of making flexible couplings are also described.

公开(公告)号：US20210284352A1

公开(公告)日：2021-09-16

申请号：US17332085

申请日：2021-05-27

申请人： Aurora Flight Sciences Corporation, a subsidiary of The Boeing Company

发明人： Gary Richard Papas ,  Neil Titchener ,  Brian M. Yutko ,  Clint Church ,  Jian Long Tian

IPC分类号： B64D35/00 ,  B64C21/00 ,  B64D27/14 ,  B64D33/04 ,  F16H1/22 ,  F16H37/06 ,  B64C1/16 ,  B64C21/06 ,  F02K3/062

摘要： An aircraft with an integrated boundary layer ingesting propulsion having a mechanically-distributed propulsion system. The mechanically-distributed propulsion system may include an engine to generate a mechanical drive power, a drive shaft, a direction-reversing transmission, and a propulsor fan. The drive shaft may be operatively coupled to the engine to receive the mechanical drive power. The direction-reversing transmission may have a first rotating shaft and a second rotating shaft, the first rotating shaft operatively coupled to the drive shaft to receive the mechanical drive power, which is configured to redirect the mechanical drive power received at the first rotating shaft from a first direction to face a second direction at the second rotating shaft. The propulsor fan may be coupled to the second rotating shaft to convert the mechanical drive power into thrust.