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公开(公告)号：US20230117303A1
公开(公告)日：2023-04-20
申请号：US17721890
申请日：2022-04-15
发明人： Brady Garrett Atkins , Troy Cyril Schank , Charles Eric COVINGTON , Carlos Alexander Fenny , Jonathan Toth
摘要： A rotor-regulation system includes a rotor that includes a plurality of rotor blades, a rotor mast operable to drive the rotor, and a rotor disc-brake system operable to modulate rotation of the rotor mast.
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公开(公告)号：US11630467B2
公开(公告)日：2023-04-18
申请号：US17133229
申请日：2020-12-23
发明人： John Robert Wittmaak, Jr. , Russell C. Peters , Aaron Hitchcock , William Ben Johns , Levi Charles Hefner , Andrew Vincent Louis
IPC分类号： G05D1/00 , B64C39/02 , G01S13/00 , B64C29/00 , G06V20/13 , G05D1/06 , G01S13/91 , B64U101/30
摘要： An aircraft includes an airframe with a thrust array attached thereto. The thrust array includes a plurality of propulsion assemblies that are independently controlled by a flight control system. A landing gear assembly is coupled to the airframe and includes a plurality of landing feet. An altitude sensor array includes a plurality of altitude sensors each of which is disposed within one of the landing feet such that when the aircraft is in the VTOL orientation, the altitude sensor array is configured to obtain multifocal altitude data relative to a landing surface. The flight control system is configured to generate a three-dimensional terrain map of the surface based upon the multifocal altitude data.
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公开(公告)号：US20230093243A1
公开(公告)日：2023-03-23
申请号：US17843135
申请日：2022-06-17
发明人： Guy Bernard
摘要： A coaxial rotor system for a rotorcraft includes a mast, a top rotor assembly and a bottom rotor assembly. The top rotor assembly is coupled to the distal end of the mast. The bottom rotor assembly includes a motor configured to provide rotational energy to the mast, thereby rotating the top rotor assembly. The bottom rotor assembly experiences a torque reaction force responsive to the motor rotating the mast such that the top and bottom rotor assemblies counter rotate.
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公开(公告)号：US11603194B2
公开(公告)日：2023-03-14
申请号：US17706445
申请日：2022-03-28
IPC分类号： B64C11/28 , B64C29/00 , B64D35/00 , B64C27/50 , B64C39/02 , B64C29/02 , B64C39/06 , B64D1/08 , B64D25/12
摘要： An aircraft having a high efficiency forward flight mode. The aircraft includes an airframe having at least one wing. A distributed propulsion system is attached to the airframe and includes a first plurality of propulsion assemblies and a second plurality of propulsion assemblies. A flight control system is operably associated with the distributed propulsion system and is operable to independently control each of the propulsion assemblies. The aircraft is configured for thrust-borne lift in a vertical takeoff and landing flight mode and wing-borne lift in the forward flight mode. In the vertical takeoff and landing flight mode, each of the propulsion assemblies is configured to generate vertical thrust. In the forward flight mode, the propulsion assemblies of the first plurality of propulsion assemblies are configured to generate forward thrust and the propulsion assemblies of the second plurality of propulsion assemblies are configured to shut down.
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公开(公告)号：US11598412B2
公开(公告)日：2023-03-07
申请号：US17243267
申请日：2021-04-28
摘要： A planetary gear system is provided in one example embodiment and may include a planet gear further comprising a bearing system, the bearing system further comprising an inner bearing assembly comprising a spherical bearing and an outer race; an outer bearing assembly comprising a plurality of cylindrical roller bearings, an inner race, and an outer race; and a race element comprising an inner surface and an outer surface, wherein the outer surface of the race element is the inner race for the outer bearing assembly and the inner surface of the race element is associated with the outer race for the inner bearing assembly.
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公开(公告)号：US11585400B2
公开(公告)日：2023-02-21
申请号：US16782019
申请日：2020-02-04
摘要： An aircraft, has an airframe, a transmission, and a liquid inertia vibration elimination (LIVE) system disposed between the airframe and the transmission via spherical bearings of two legs and via a central spherical bearing.
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公开(公告)号：US11584521B2
公开(公告)日：2023-02-21
申请号：US16584448
申请日：2019-09-26
摘要： In an embodiment, a rotorcraft includes an airframe; a main rotor transmission; one or more brackets mounting the main rotor transmission to the airframe, longitudinal axes of the one or more brackets being substantially parallel with a longitudinal axis of the rotorcraft; and one or more restraints mounting the main rotor transmission to the airframe, the one or more restraints being mounted at an angle non-orthogonal to the longitudinal axis of the rotorcraft and a lateral axis of the rotorcraft.
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公开(公告)号：US11577831B2
公开(公告)日：2023-02-14
申请号：US17449916
申请日：2021-10-04
发明人： Troy C. Schank
摘要： A tiltrotor aircraft having a propulsion configuration that divorces the engine core power from the thrust fan, using a combined gearbox with a plurality of clutches to couple and decouple one or more rotor systems and one or more thrust fans. The aircraft can be operable for vertical takeoff and landing (VTOL) in a helicopter mode, forward flight in a proprotor mode, and high-speed forward flight in an airplane (jet) mode. The propulsion configuration provides shaft horsepower (SHP) to rotors for VTOL flight, while also providing SHP to the thrust fan for high speed flight. Allowing the rotor and the thrust fan to be clutched on and off, sequentially, enables transition from rotor-borne VTOL flight to wing-borne thrust fan flight, and back.
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公开(公告)号：US11577826B2
公开(公告)日：2023-02-14
申请号：US17689511
申请日：2022-03-08
发明人： David Heverly , Frank Bradley Stamps , Jouyoung Jason Choi , Michael R. Smith , Thomas C. Parham
摘要： A vibration attenuator for a rotor of an aircraft has a first ring with an eccentric weight, a coaxial second ring with an eccentric weight, and a central ring coaxial with the first and second rings and located therebetween. A first post extends from the first ring toward the central ring and is received in a first arcuate groove formed on the central ring, whereas a second post extends from the second ring toward the central ring and is received in a second groove formed on the central ring. A motor is configured for driving the central ring in rotation about the axis relative to the motor. The grooves are equal in length, and a center of the first groove is located on an opposite side from a center of the second groove. Rotation of the central ring by the motor causes rotation of the first and second rings.
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公开(公告)号：US11571995B2
公开(公告)日：2023-02-07
申请号：US17101298
申请日：2020-11-23
发明人： Brent William Last
摘要： A seat configured for removably securing to a track includes a quick-release fitting for operation by hand to releasably secure a bottom end of a seat leg to a floor-mounted track for facile adjustment and removal of the seat. A threaded stud includes a shaft portion arranged through an opening in an end of the seat leg and a radially extending base. A pivot mechanism has a through-hole arranged around the shaft portion of the threaded stud. A first transverse member and a second transverse member each extend transversely from the pivot mechanism in opposite directions along a pivot axis. A lever is configured to pivot about the pivot axis causing the threaded stud to move up or down via the pivot mechanism, which raises and lowers the radially extending base for alternately securing the seat leg to the track and releasing the seat leg from the track.
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