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    Supplemental engine power control
    1.
    发明授权
    Supplemental engine power control 有权

    公开(公告)号：US11873081B2

    公开(公告)日：2024-01-16

    申请号：US17342963

    申请日：2021-06-09

    Applicant: Bell Textron Inc.

    Inventor： Charles Eric Covington ,  Chia-Wei Su ,  Darren Gregory Lang ,  Thomas Parsons ,  Cody Earl Fegely

    IPC: B64C27/12 ,  B64D31/12

    CPC classification number: B64C27/12 ,  B64D31/12

    Abstract: A rotorcraft has a drive system including a main rotor coupled to a main rotor gearbox to rotate the main rotor at a rotor speed, a main engine coupled to the drive system to provide a first power, a supplemental engine coupled, when a first clutch is engaged, to the drive system to provide a second power additive to the first power, and a control system operable to control the main engine and the supplemental engine to provide a total power demand, where the main engine is controlled based on variations in rotor speed and a power compensation command to produce the first power, and the supplemental engine is controlled to produce the second power in response to a supplemental power demand.

    System and Method for Calibrating Torque Measurements
    2.
    发明申请
    System and Method for Calibrating Torque Measurements 有权

    公开(公告)号：US20230002040A1

    公开(公告)日：2023-01-05

    申请号：US17363051

    申请日：2021-06-30

    Applicant: Bell Textron Inc.

    Inventor： Charles Eric Covington ,  Brian E. Tucker

    IPC: B64C27/57 ,  B64D43/00 ,  G01L3/10

    Abstract: A torque measurement system determines torque on a shaft by monitoring angular deflection of the shaft under load using phase shift measurements. Calibration of the system uses a defined offset that is determined using a reference operating condition. The offset calibration value is determined for a rotorcraft using the following steps: defining a reference operational condition in which the shaft is rotating, estimating the torque at the reference condition based on aerodynamic knowledge of the rotors coupled to the shaft, operating the shaft at the reference operational condition, capturing sensor data to determine the phase difference at the operational condition, and associating the phase difference and an estimated torque as a calibration value to enable calculation of torque in the torque measurement system.

    Multimode Clutch Assemblies having Engagement Status Sensors
    3.
    发明申请
    Multimode Clutch Assemblies having Engagement Status Sensors 有权

    公开(公告)号：US20210070430A1

    公开(公告)日：2021-03-11

    申请号：US17063712

    申请日：2020-10-05

    Applicant: Bell Textron Inc.

    Inventor： Douglas Andrew Goodwin ,  David Andrew Prater ,  Eric Stephen Olson ,  David Bryan Roberts ,  Chia-Wei Su ,  Michael David Trantham ,  Charles Eric Covington

    IPC: B64C27/12 ,  B64D35/08 ,  F16D41/04

    Abstract: A multimode clutch assembly is positioned in a powertrain of a rotorcraft. The clutch assembly includes a freewheeling unit having a driving mode in which torque applied to the input race is transferred to the output race and an overrunning mode in which torque applied to the output race is not transferred to the input race. A bypass assembly has an engaged position that couples the input and output races of the freewheeling unit. An actuator assembly shifts the bypass assembly between engaged and disengaged positions. An engagement status sensor is configured to determine the engagement status of the bypass assembly. In the disengaged position, the overrunning mode of the freewheeling unit is enabled such that the clutch assembly is configured for unidirectional torque transfer. In the engaged position, the overrunning mode of the freewheeling unit is disabled such that the clutch assembly is configured for bidirectional torque transfer.

    METHOD AND APPARATUS FOR A PRECISION POSITION SENSOR
    6.
    发明申请
    METHOD AND APPARATUS FOR A PRECISION POSITION SENSOR 审中-公开

    公开(公告)号：US20200232781A1

    公开(公告)日：2020-07-23

    申请号：US16840996

    申请日：2020-04-06

    Applicant: Bell Textron Inc.

    Inventor： David Bryan Roberts ,  Charles Eric Covington ,  Brady Garrett Atkins

    IPC: G01B7/30 ,  G01D5/249 ,  B64C29/00 ,  G01B11/04 ,  G01D5/347 ,  G01B11/26 ,  G01B7/04

    Abstract: A method and system to measure a parameter associated with a component, device, or system with a specified accuracy, including: providing one or more sensors operably disposed to detect the parameter; obtaining a coarse measurement of the parameter within a first range using the one or more sensors, wherein the first range includes minimum and maximum values for the parameter; obtaining a fine measurement of the parameter within a second range using the one or more sensors, wherein the second range is smaller than the first range and has a specified ratio to the first range that provides the specified accuracy; determining a current value of the parameter by combining the coarse and fine measurements; and providing the current value of the parameter to a communications interface, a storage device, a display, a control panel, a processor, a programmable logic controller, or an external device.

    System and method for calibrating torque measurements
    7.
    发明授权
    System and method for calibrating torque measurements 有权

    公开(公告)号：US11975828B2

    公开(公告)日：2024-05-07

    申请号：US17363051

    申请日：2021-06-30

    Applicant: Bell Textron Inc.

    Inventor： Charles Eric Covington ,  Brian E. Tucker

    IPC: B64C27/57 ,  B64D43/00 ,  B64D45/00 ,  G01L3/10

    CPC classification number: B64C27/57 ,  B64D43/00 ,  G01L3/109 ,  B64D2045/0085

    Abstract: A torque measurement system determines torque on a shaft by monitoring angular deflection of the shaft under load using phase shift measurements. Calibration of the system uses a defined offset that is determined using a reference operating condition. The offset calibration value is determined for a rotorcraft using the following steps: defining a reference operational condition in which the shaft is rotating, estimating the torque at the reference condition based on aerodynamic knowledge of the rotors coupled to the shaft, operating the shaft at the reference operational condition, capturing sensor data to determine the phase difference at the operational condition, and associating the phase difference and an estimated torque as a calibration value to enable calculation of torque in the torque measurement system.

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