公开(公告)号：US11433997B2

公开(公告)日：2022-09-06

申请号：US16399015

申请日：2019-04-30

Applicant: Bell Helicopter Textron Inc.

Inventor： Aaron A. Acee ,  Albert G. Brand ,  Frank B. Stamps

IPC: B64C27/82 ,  B64C13/50 ,  B64C13/04

Abstract: A method of providing an anti-torque force in a rotorcraft with an anti-torque system comprised of a primary ducted tail rotor system mechanically connected to an engine, and a secondary ducted tail rotor system electrically connected to an electric power supply. The method includes receiving an indication of a change in the operating condition of the anti-torque system based upon a change in a rotorcraft condition input, a feedback input associated with a primary ducted tail rotor system and/or a secondary ducted tail rotor system, and/or a pilot input; responsive to the indication of the change, determining, by a control system, an anti-torque control input including at least a secondary output command for controlling the secondary ducted tail rotor system; and transmitting the secondary output command to the secondary ducted tail rotor system to energize at least one ducted tail rotor assembly therein to provide the second anti-torque force.

公开(公告)号：US20200023958A1

公开(公告)日：2020-01-23

申请号：US16399015

申请日：2019-04-30

Applicant: Bell Helicopter Textron Inc.

Inventor： Aaron A. Acee ,  Albert G. Brand ,  Frank B. Stamps

IPC: B64C27/82 ,  B64C13/50 ,  B64C13/04 ,  B64C27/57 ,  B64C27/78 ,  B64C27/64 ,  B64C27/68 ,  B64D35/04

Abstract: A method of providing an anti-torque force in a rotorcraft with an anti-torque system comprised of a primary ducted tail rotor system mechanically connected to an engine, and a secondary ducted tail rotor system electrically connected to an electric power supply. The method includes receiving an indication of a change in the operating condition of the anti-torque system based upon a change in a rotorcraft condition input, a feedback input associated with a primary ducted tail rotor system and/or a secondary ducted tail rotor system, and/or a pilot input; responsive to the indication of the change, determining, by a control system, an anti-torque control input including at least a secondary output command for controlling the secondary ducted tail rotor system; and transmitting the secondary output command to the secondary ducted tail rotor system to energize at least one ducted tail rotor assembly therein to provide the second anti-torque force.