- Patent Title: Independent speed and attitude control for a rotary wing aircraft
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Application No.: US14741793Application Date: 2015-06-17
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Publication No.: US09727059B2Publication Date: 2017-08-08
- Inventor: Aaron L. Greenfield , John Knag , Stephen Kubik
- Applicant: Sikorsky Aircraft Corporation
- Applicant Address: US CT Stratford
- Assignee: SIKORSKY AIRCRAFT CORPORATION
- Current Assignee: SIKORSKY AIRCRAFT CORPORATION
- Current Assignee Address: US CT Stratford
- Agency: Cantor Colburn LLP
- Main IPC: G05D1/08
- IPC: G05D1/08 ; B64C27/10 ; B64C27/82

Abstract:
One aspect is a flight control system for independent speed and attitude control of a rotary wing aircraft that includes a main rotor system and a translational thrust system. The flight control system includes a flight control computer configured to interface with the main rotor system and the translational thrust system. The flight control computer includes processing circuitry configured to execute control logic. A pitch attitude reference generator provides a pitch attitude reference to a main rotor controller to command the main rotor system based on pilot input. A longitudinal reference generator produces a longitudinal reference as a longitudinal position or longitudinal velocity based on pilot input. An attitude-to-propulsor crossfeed converts the pitch attitude reference into a propulsor trim adjustment. A propeller pitch controller combines the longitudinal reference and the propulsor trim adjustment into a propeller command, and provides the propeller command to the translational thrust system.
Public/Granted literature
- US20150367937A1 INDEPENDENT SPEED AND ATTITUDE CONTROL FOR A ROTARY WING AIRCRAFT Public/Granted day:2015-12-24
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