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Patent Agency Ranking
公开(公告)号：US20180292841A1
公开(公告)日：2018-10-11
申请号：US15484994
申请日：2017-04-11
Applicant: Bell Helicopter Textron Inc.
Inventor： Christopher Mike Bothwell , Sung Kyun Kim , Jillian Samantha Alfred , Robert Earl Worsham, II , Luke Dafydd Gillett , Morganne Cody Klein
IPC: G05D1/06 , B64C27/06 , B64C13/50 , B64C27/56 , B64C27/605
CPC classification number: G05D1/0607 , B64C13/50 , B64C13/503 , B64C27/06 , B64C27/56 , B64C27/605 , G05D1/0858
Abstract: A rotorcraft including a flight control computer (FCC) providing a vertical speed hold for the rotorcraft, a collective control, and a collective trim motor connected to the collective control. The collective trim motor moves the collective control according to a collective set command generated by the FCC according to a target vertical speed and when the FCC determines the collective control is in-detent. A collective position sensor is connected to the collective control. The collective position sensor generates, and sends to the FCC, a collective position signal indicating the position of the collective control. A flight control device controls a flight parameter of the rotorcraft in response to a flight control device control signal received from the FCC. The FCC generates the flight control device control signal according to the collective position signal, and sends the flight control device control signal to a flight control device.
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公开(公告)号：US10386858B2
公开(公告)日：2019-08-20
申请号：US15594393
申请日：2017-05-12
Applicant: Bell Helicopter Textron Inc.
Inventor： Christopher Mike Bothwell , Jillian Samantha Alfred , Sung Kyun Kim , Marko Vuga , Matthew Hendricks , Mark Wasikowski , Thomas Parham , Michael Reaugh Smith
Abstract: In accordance with an embodiment of the present invention, a method of operating a rotorcraft includes receiving a measured yaw rate from a yaw rate sensor or a measured lateral acceleration from a lateral acceleration sensor of the rotorcraft, filtering the measured yaw rate or the measured lateral acceleration using a filter to form a filtered measured yaw rate or a filtered measured lateral acceleration, and regulating a yaw rate or a lateral acceleration of the rotorcraft based on the measured yaw rate or the measured lateral acceleration. The filter includes a bandpass characteristic or a notch characteristic, and the filtering is configured to reduce lateral vibrations caused by airflow in a tail section of the rotorcraft.
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公开(公告)号：US10261517B2
公开(公告)日：2019-04-16
申请号：US15484994
申请日：2017-04-11
Applicant: Bell Helicopter Textron Inc.
Inventor： Christopher Mike Bothwell , Sung Kyun Kim , Jillian Samantha Alfred , Robert Earl Worsham, II , Luke Dafydd Gillett , Morganne Cody Klein
Abstract: A rotorcraft including a flight control computer (FCC) providing a vertical speed hold for the rotorcraft, a collective control, and a collective trim motor connected to the collective control. The collective trim motor moves the collective control according to a collective set command generated by the FCC according to a target vertical speed and when the FCC determines the collective control is in-detent. A collective position sensor is connected to the collective control. The collective position sensor generates, and sends to the FCC, a collective position signal indicating the position of the collective control. A flight control device controls a flight parameter of the rotorcraft in response to a flight control device control signal received from the FCC. The FCC generates the flight control device control signal according to the collective position signal, and sends the flight control device control signal to a flight control device.
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公开(公告)号：US20180329430A1
公开(公告)日：2018-11-15
申请号：US15594393
申请日：2017-05-12
Applicant: Bell Helicopter Textron Inc.
Inventor： Christopher Mike Bothwell , Jillian Samantha Alfred , Sung Kyun Kim , Marko Vuga , Matthew Hendricks , Mark Wasikowski , Thomas Parham , Michael Reaugh Smith
CPC classification number: G05D1/0858 , B64C27/001 , B64C27/04 , B64C27/57 , B64C27/82 , G05D1/0825
Abstract: In accordance with an embodiment of the present invention, a method of operating a rotorcraft includes receiving a measured yaw rate from a yaw rate sensor or a measured lateral acceleration from a lateral acceleration sensor of the rotorcraft, filtering the measured yaw rate or the measured lateral acceleration using a filter to form a filtered measured yaw rate or a filtered measured lateral acceleration, and regulating a yaw rate or a lateral acceleration of the rotorcraft based on the measured yaw rate or the measured lateral acceleration. The filter includes a bandpass characteristic or a notch characteristic, and the filtering is configured to reduce lateral vibrations caused by airflow in a tail section of the rotorcraft
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公开(公告)号：US20180246510A1
公开(公告)日：2018-08-30
申请号：US15443493
申请日：2017-02-27
Applicant: Bell Helicopter Textron Inc.
CPC classification number: G05D1/0055 , B64C13/10 , B64C13/343 , B64C13/345 , B64C13/507 , B64C27/57 , F02C9/28 , F02C9/58 , F05D2220/329 , F05D2270/021
Abstract: A flight control computer (FCC) for a rotorcraft includes a processor and a non-transitory computer-readable storage medium storing a program to be executed by the processor, with the program including instructions for providing main rotor overspeed protection. The instructions for providing the main rotor overspeed protection include instructions for monitoring sensor signals indicating a main rotor RPM, determining a target operating parameter, determining one or more flight parameters in response to a relationship between the main rotor RPM and the target operating parameter indicating a main rotor overspeed condition. Determining the one or more flight parameters includes determining a setting for a flight control device of the rotorcraft that changes the main rotor RPM, controlling positioning of a pilot control according to the flight parameters, and controlling the flight control device of the rotorcraft according to positioning of the pilot control.
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