Invention Grant
- Patent Title: Rotorcraft anti-torque systems and methods therefor
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Application No.: US16399015Application Date: 2019-04-30
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Publication No.: US11433997B2Publication Date: 2022-09-06
- Inventor: Aaron A. Acee , Albert G. Brand , Frank B. Stamps
- Applicant: Bell Helicopter Textron Inc.
- Applicant Address: US TX Fort Worth
- Assignee: Bell Helicopter Textron Inc.
- Current Assignee: Bell Helicopter Textron Inc.
- Current Assignee Address: US TX Fort Worth
- Agency: Timmer Law Group, PLLC
- Main IPC: B64C27/82
- 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.
Public/Granted literature
- US20200023958A1 ROTORCRAFT ANTI-TORQUE SYSTEMS AND METHODS THEREFOR Public/Granted day:2020-01-23
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