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12 条记录 (耗时 0.012 秒)

    DRIVE SPLINES WITH FRICTION-REDUCING COATING
    1.
    发明申请
    DRIVE SPLINES WITH FRICTION-REDUCING COATING 有权

    公开(公告)号：US20220290723A1

    公开(公告)日：2022-09-15

    申请号：US17694234

    申请日：2022-03-14

    申请人： Textron Innovations Inc.

    发明人： Ron Woods ,  Gary Dale Hall ,  Scott David Poster ,  Lance William Weihmuller ,  Charles Hubert Speller

    IPC分类号： F16D1/10

    摘要： A torque-transfer component has splines configured for engaging a corresponding feature of another component, at least a portion of each spline being hardened before a friction-reducing surface coating is applied to the splines. The splines are preferably hardened by nitriding, carburizing, induction hardening, or laser hardening, and the friction-reducing coating preferably comprises diamond-like carbon or tungsten carbide. The coating can be applied using, for example, physical vapor deposition, chemical vapor deposition, chemically assisted physical vapor deposition, autocatalytic electroless deposition, electroplating, or an oxygen fuel gun.

    ELECTRIC TILTROTOR AIRCRAFT WITH FIXED MOTORS
    3.
    发明公开
    ELECTRIC TILTROTOR AIRCRAFT WITH FIXED MOTORS 审中-公开

    公开(公告)号：US20240246665A1

    公开(公告)日：2024-07-25

    申请号：US18624806

    申请日：2024-04-02

    申请人： Textron Innovations Inc.

    发明人： Jonathan Andrew Knoll ,  George Matthew Thompson ,  Charles Hubert Speller ,  Grant Michael Beall

    IPC分类号： B64C27/28 ,  B64C29/00

    CPC分类号： B64C27/28 ,  B64C29/0033

    摘要： A rotor system for an aircraft includes a rotor assembly comprising a plurality of rotor blades connected to a rotor mast, wherein the rotor assembly is tiltable relative to a wing of the aircraft between a first position corresponding to an airplane mode of the aircraft and a second position corresponding to a helicopter mode of the aircraft; and a drive system for providing rotational energy to the rotor assembly via the rotor mast. The drive system includes at least one electric motor for generating rotational energy to a motor shaft; and a gearbox connected to receive rotational energy from the at least one electric motor via the motor shaft and to provide rotational energy to the rotor mast via a rotor shaft, wherein the at least one electric motor is fixed relative to the wing of the aircraft.

    Axially Biased Nonintegral Raceways for Rotorcraft Masts
    4.
    发明公开
    Axially Biased Nonintegral Raceways for Rotorcraft Masts 审中-公开

    公开(公告)号：US20240190560A1

    公开(公告)日：2024-06-13

    申请号：US18080187

    申请日：2022-12-13

    申请人： Textron Innovations Inc.

    发明人： Charles Hubert Speller ,  Alan Wayne Falls ,  Nathan D. Sudek

    IPC分类号： B64C27/14 ,  B64F5/10 ,  F16C19/18

    CPC分类号： B64C27/14 ,  B64F5/10 ,  F16C19/18 ,  F16C2326/43

    摘要： A propulsion assembly for a rotorcraft. The propulsion assembly includes a mast having an internal ledge, a raceway station and an external ridge with at least a portion of the raceway station positioned axially between the internal ledge and the external ridge. A nonintegral raceway is receivable by the raceway station to form a press fit joint between the mast and the nonintegral raceway. A mast bearing assembly includes a plurality of bearings configured to engage an outer surface of the nonintegral raceway. The internal ledge is configured to generate a nonuniform normal force between the mast and the nonintegral raceway along the raceway station that axially biases the nonintegral raceway toward the external ridge, thereby securing the nonintegral raceway at the raceway station.

    Friction Welded Raceways for Use in Rotorcraft Propulsion Assemblies
    8.
    发明申请
    Friction Welded Raceways for Use in Rotorcraft Propulsion Assemblies 有权

    公开(公告)号：US20230122735A1

    公开(公告)日：2023-04-20

    申请号：US17506058

    申请日：2021-10-20

    申请人： Textron Innovations Inc.

    发明人： Ezra Mike Tiprigan ,  Charles Hubert Speller

    IPC分类号： B64C27/14 ,  B64C29/00 ,  B64C27/06 ,  B64F5/10

    摘要： A propulsion assembly for a rotorcraft includes a raceway having a tapered inner surface and a mast configured to receive the raceway at a raceway receiving station. The mast has a tapered outer surface at the raceway receiving station. The propulsion assembly includes a mast bearing assembly having a plurality of bearings facing the mast to engage the raceway. The tapered inner surface of the raceway is friction welded to the tapered outer surface of the mast at the raceway receiving station to form a tapered friction weld line.

    Persistent lubrication systems for aircraft gearboxes
    9.
    发明授权
    Persistent lubrication systems for aircraft gearboxes 有权

    公开(公告)号：US11852232B1

    公开(公告)日：2023-12-26

    申请号：US17978919

    申请日：2022-11-01

    申请人： Textron Innovations Inc.

    发明人： Charles Hubert Speller ,  Ezra Mike Tiprigan

    IPC分类号： F16H57/04 ,  B64C29/00

    CPC分类号： F16H57/0442 ,  B64C29/0033 ,  F16H57/0436 ,  F16H57/0445 ,  F16H57/0453 ,  F16H57/0404 ,  F16H57/0417

    摘要： A drive system for an aircraft such as a tiltrotor aircraft. The drive system includes first and second gearbox assemblies in mechanical communication with each other. A first lubrication system is associated with the first gearbox assembly and includes a bifurcated tank configured to contain a lubricant in an operating chamber including a lower sump and in an emergency chamber including an upper sump. A second lubrication system is associated with the second gearbox assembly. An emergency pump is in fluid communication with the emergency chamber. The emergency pump is configured to supply the lubricant to the first gearbox assembly from the emergency chamber responsive to a failure in the first lubrication system. In addition, the emergency pump is configured to supply the lubricant to the second gearbox assembly and to the operating chamber from the emergency chamber responsive to a failure in the second lubrication system.