公开(公告)号：EP3401751B1

公开(公告)日：2020-03-25

申请号：EP17178494.5

申请日：2017-06-28

Applicant: Bell Helicopter Textron Inc.

Inventor： BOTHWELL, Christopher Mike ,  ALFRED, Jillian Samantha ,  KIM, Sung Kyun ,  VUGA, Marko ,  HENDRICKS, Matthew ,  WASIKOWSKI, Mark ,  PARHAM, Thomas ,  SMITH, Michael Reaugh

IPC: G05D1/08 ,  B64C27/04 ,  B64C27/57 ,  B64C27/82

公开(公告)号：EP3578458A1

公开(公告)日：2019-12-11

申请号：EP18185550.3

申请日：2018-07-25

Applicant: Bell Helicopter Textron Inc.

Inventor： WORSHAM II, Robert Earl ,  BOTHWELL, Christopher Mike ,  KIM, Sung Kyun ,  KLEIN, Morganne Cody

IPC: B64C13/50 ,  B64C27/57 ,  G05D1/04 ,  G05D1/06 ,  G01S13/87 ,  G01S13/88

Abstract: A method of operating a rotorcraft (101) includes receiving multiple first height data signals from multiple first height sensors (404A) on the rotorcraft, wherein the first height sensors measure height using a first technique, receiving multiple second height data signals from multiple second height sensors (404B) on the rotorcraft (101), wherein the second height sensors measure height using a second technique that is different than the first technique, determining a first height signal from the multiple first height data signals based on a selection scheme, determining a second height signal from the multiple second height data signals, selecting the first height signal or the second height signal to determine a selected height signal, and generating a flight control signal and controlling operation of the rotorcraft (101) according to the flight control signal, the flight control signal based on the selected height signal.

公开(公告)号：EP3401751A1

公开(公告)日：2018-11-14

申请号：EP17178494.5

申请日：2017-06-28

Applicant: Bell Helicopter Textron Inc.

Inventor： BOTHWELL, Christopher Mike ,  ALFRED, Jillian Samantha ,  KIM, Sung Kyun ,  VUGA, Marko ,  HENDRICKS, Matthew ,  WASIKOWSKI, Mark ,  PARHAM, Thomas ,  SMITH, Michael Reaugh

IPC: G05D1/08 ,  B64C13/50 ,  B64C27/04

Abstract: In accordance with an embodiment of the present invention, a method of operating a rotorcraft (101) includes receiving a measured yaw rate from a yaw rate sensor or a measured lateral acceleration from a lateral acceleration sensor of the rotorcraft (101), 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 (123) of the rotorcraft (101).

公开(公告)号：EP3388335A1

公开(公告)日：2018-10-17

申请号：EP17168195.0

申请日：2017-04-26

Applicant: Bell Helicopter Textron Inc.

Inventor： BOTHWELL, Christopher Mike ,  KIM, Sung Kyun ,  ALFRED, Jillian Samantha ,  WORSHAM, Robert Earl ,  GILLETT, Luke Dafydd ,  KLEIN, Morganne Cody

IPC: B64C13/50 ,  G05D1/06 ,  G05D1/08

CPC classification number: G05D1/0607 ,  B64C13/50 ,  B64C13/503 ,  B64C27/06 ,  B64C27/56 ,  B64C27/605 ,  G05D1/0858

Abstract: A rotorcraft (101, Figure 1) including a flight control computer (FCC) (205) providing a vertical speed hold for the rotorcraft (101), a collective control (233), and a collective trim motor (213) connected to the collective control (233). The collective trim motor (213) moves the collective control (233) according to a collective set command generated by the FCC (205) according to a target vertical speed and when the FCC (205) determines the collective control (219) is in-detent. A collective position sensor (215) is connected to the collective control (219). The collective position sensor (215) generates, and sends to the FCC (205), a collective position signal indicating the position of the collective control (233). A flight control device controls a flight parameter of the rotorcraft in response to a flight control device control signal received from the FCC (205). The FCC (205) 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.

公开(公告)号：EP3366574A1

公开(公告)日：2018-08-29

申请号：EP18155205.0

申请日：2018-02-06

Applicant: Bell Helicopter Textron Inc.

Inventor： BOTHWELL, Christopher Mike ,  GILLETT, Luke Dafydd ,  ALFRED, Jillian

IPC: B64C13/28 ,  B64C13/04 ,  B64C13/10 ,  B64C27/57 ,  B64C13/50

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) (205) for a rotorcraft (101) 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 (107; 212) of the rotorcraft (101) that changes the main rotor RPM, controlling positioning of a pilot control according to the flight parameters, and controlling the flight control device (107; 212) of the rotorcraft (101) according to positioning of the pilot control.