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1. (WO2016060788) FEED-FORWARD COMPENSATION FOR GYROSCOPIC LOADS IN A COAXIAL ROTOR

Pub. No.:    WO/2016/060788    International Application No.:    PCT/US2015/051204
Publication Date: Fri Apr 22 01:59:59 CEST 2016 International Filing Date: Tue Sep 22 01:59:59 CEST 2015
IPC: B64C 27/10
B64C 27/467
B64C 27/54
Applicants: SIKORSKY AIRCRAFT CORPORATION
Inventors: LUSZCZ, Matthew T.
WHITE, Matthew A.
WITTMER, Kenneth S.
Title: FEED-FORWARD COMPENSATION FOR GYROSCOPIC LOADS IN A COAXIAL ROTOR
Abstract:
A system and method for counteracting a rotor moment of one or more rotors of a coaxial rotor helicopter includes receiving signals with a processor indicative of a displacement command from a controller during a flight maneuver; receiving one or more signals with the processor from a sensor indicative of an airspeed and air density for the helicopter; determining a commanded rate of acceleration for the helicopter during the flight maneuver; and adjusting with one or more control servos a cyclic pitch for the one or more rotors to counteract the rotor moment during the flight maneuver.