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    TANDEM TILTROTOR AIRCRAFT
    2.
    发明申请
    TANDEM TILTROTOR AIRCRAFT 审中-公开

    公开(公告)号：US20200223537A1

    公开(公告)日：2020-07-16

    申请号：US16249325

    申请日：2019-01-16

    Applicant: Bell Textron Inc.

    Inventor： John Robert Wittmaak ,  Stephen Yibum Chung ,  Matthew Edward Louis ,  Steven M. Loveland

    IPC: B64C27/52 ,  B64C11/50 ,  B64C27/37

    Abstract: A tandem tiltrotor aircraft in which the tiltrotor assemblies are operably coupled at the forward and aft ends of the fuselage of the aircraft is disclosed. The tiltrotor assemblies are capable of rotating between a vertical lift position and a horizontal flight position. The in-line location of the tiltrotor assemblies allow the aircraft to have the vertical take-off and landing capabilities, and, in combination with the at least one wing, can be used in horizontal flight. The nacelles can be disposed on the fuselage they are coaxial in forward flight and do not add to the drag profile like wing-tip nacelles would. When wing-borne flight is desired some or all of the rotors can rotate down so the thrust vector is in a generally horizontal plane.

    Electric drive system for rotorcraft
    3.
    发明授权
    Electric drive system for rotorcraft 有权

    公开(公告)号：US11781544B2

    公开(公告)日：2023-10-10

    申请号：US17075281

    申请日：2020-10-20

    Applicant: Bell Textron Inc.

    Inventor： Grant Beall ,  Stephen Yibum Chung

    IPC: F04C2/10 ,  F04C15/00

    CPC classification number: F04C2/102 ,  F04C15/008 ,  F04C15/0073

    Abstract: A rotor system comprising a driveshaft; at least one motor for providing rotational energy for the driveshaft; an overrunning clutch connected to the motor and disposed around the driveshaft, wherein the overrunning clutch is rotated by the at least one motor; and a pump assembly associated with the at least one motor, the pump assembly comprising a large bore through which the driveshaft passes such that the pump assembly is arranged concentric to the driveshaft, the pump assembly further comprising a gerotor pump comprising inner and outer gerotor pump gears, wherein an inner bore of the gerotor pump engages and is driven by the overrunning clutch; and a cover disposed over the gerotor pump for providing a sump for the gerotor pump.

    Remote control unit having active feedback
    5.
    发明授权
    Remote control unit having active feedback 有权

    公开(公告)号：US11543819B2

    公开(公告)日：2023-01-03

    申请号：US16284164

    申请日：2019-02-25

    Applicant: BELL TEXTRON INC.

    Inventor： Stephen Yibum Chung ,  Russell C. Peters ,  Andrew Vincent Louis

    IPC: G05D1/00 ,  G05D1/10 ,  B64C39/02 ,  B64C29/00

    Abstract: In one embodiment, a remote controller for a vehicle includes at least one control element for controlling operation of at least one aspect of the vehicle when the vehicle is in a remote-control mode; an actuator connected the at least one control element for controlling a position of the at least one control element when the vehicle is in an autonomous operations mode; and a processing system for receiving a first control signal from the vehicle indicative of a state of operation of the vehicle. In operation, the processing system generates a second control signal to the actuator to cause the actuator to control a position of the control element such that it corresponds to and indicates the state of operation of the vehicle.

    Modular Tandem Tiltrotor Aircraft
    7.
    发明申请
    Modular Tandem Tiltrotor Aircraft 有权

    公开(公告)号：US20210114723A1

    公开(公告)日：2021-04-22

    申请号：US17081654

    申请日：2020-10-27

    Applicant: Bell Textron Inc.

    Inventor： John Robert Wittmaak, JR. ,  Steven M. Loveland ,  Joshua Allan Edler ,  Alan Hisashi Steinert ,  Stephen Yibum Chung ,  Matthew Edward Louis

    IPC: B64C29/00

    Abstract: A modular tandem tiltrotor aircraft in which the tiltrotor assemblies are operably coupled at the forward and aft ends of the fuselage of the aircraft is disclosed. The modular tandem tiltrotor assemblies are capable of rotating between a vertical lift position and a horizontal flight position. The modular tandem tiltrotor aircraft can be structurally more efficient and lower drag than a conventional tiltrotor, has better control authority and lifting capacity than hybrid-quads and tail-sitters, and has more range than a helicopter or multi-rotor. The modular tandem tiltrotor aircraft can orbit and search over a broad area, or can hover for long periods, depending on the application. Instead of providing a multi-function tandem tiltrotor aircraft that is generally suited for all applications, but not optimized for any, the modular tandem tiltrotor aircraft allows for customized configuration to optimize the aircraft for a particular application.

    Electric drive system line replaceable unit with integrated thermal cooling
    8.
    发明授权
    Electric drive system line replaceable unit with integrated thermal cooling 有权

    公开(公告)号：US11554859B2

    公开(公告)日：2023-01-17

    申请号：US16808818

    申请日：2020-03-04

    Applicant: Bell Textron Inc.

    Inventor： William Kyle Heironimus ,  Stephen Yibum Chung

    IPC: B64C27/14 ,  B64C27/58 ,  B64D27/24 ,  B64D33/08 ,  B64D13/00

    Abstract: One embodiment is an electric drive system for an aircraft including a motor, a gear box associated with the motor, and a cooling fan for drawing air into the unit across an electronic component to cool the electronic component and for expelling air into an oil cooler for cooling oil contained therein. The electric drive system further includes an oil distribution system for distributing oil cooled by the oil cooler to at least one motor and at least one gearbox, the distributed oil being used to cool the motor and the gearbox, a reservoir for collecting the distributed oil after it has been used to cool the motor and the gearbox, and at least one structural element for retaining the motor, gearbox, the cooling fan, the oil distribution system, and the reservoir together as a unit.

    ELECTRIC DRIVE SYSTEM FOR ROTORCRAFT
    10.
    发明申请
    ELECTRIC DRIVE SYSTEM FOR ROTORCRAFT 有权

    公开(公告)号：US20220120261A1

    公开(公告)日：2022-04-21

    申请号：US17075281

    申请日：2020-10-20

    Applicant: Bell Textron Inc.

    Inventor： Grant Beall ,  Stephen Yibum Chung

    IPC: F04B17/03 ,  B64C27/52

    Abstract: A rotor system comprising a driveshaft; at least one motor for providing rotational energy for the driveshaft; an overrunning clutch connected to the motor and disposed around the driveshaft, wherein the overrunning clutch is rotated by the at least one motor; and a pump assembly associated with the at least one motor, the pump assembly comprising a large bore through which the driveshaft passes such that the pump assembly is arranged concentric to the driveshaft, the pump assembly further comprising a gerotor pump comprising inner and outer gerotor pump gears, wherein an inner bore of the gerotor pump engages and is driven by the overrunning clutch; and a cover disposed over the gerotor pump for providing a sump for the gerotor pump.

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