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US 2012/0072056 A1Published application
Flight control system for rotary wing aircraft
AssigneeSikorsky Aircraft Corporation
InventorsMuhammad Emadul Hasan, Donald W. Fowler, Pengju Kang
Life of this patent
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Abstract
A flight control system and method includes a control loop control law to bias the collective stick toward a trim reference position with a motor and generate a force gradient with a clutch.
Claims21
A flight control system comprising:
- a control inceptor;
- control inceptor
- a clutch engageable with said control inceptor;
- a motor engageable with said control inceptor;
- and
- a module comprising a trim reference control law in communication with a control loop control law, said trim reference control law operable to generates a trim reference position for said control inceptor, said trim reference position utilized by said control loop control law to control a speed of said control inceptor toward said trim reference position with said motor and generate a force gradient with said clutch.
3 more elements
A method of flight control comprising:
- recording a current position of a control inceptor as a trim reference position;
- generating a clutch command to hold the control inceptor at the trim reference position;
- and
- generating a motor speed command in response to movement of the control inceptor from the trim reference position.
1 more element
Dependencies are inferred from the claim text.