Method and device for reducing the effect of the vibration gener

Details Method and device for reducing the effect of the vibration gener Method and device for reducing the effect of the vibration gener

1997-04-04

1999-04-20

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

416500, 244 1727, B64C 2754

Patent

active

058950125

ABSTRACT:
Method for reducing the effect of the vibration generated by the driveline of a helicopter. The helicopter includes at least one rotor, the collective pitch of the blades of which can be controlled by a control system. The values of at least one parameter representing the effect of the vibration generated by the driveline are measured. A control signal for the collective pitch of the blades of the rotor is directly formed from the measured values of the parameter. The control signal to the system for controlling the collective pitch of the blades of the rotor generates a set of forces and of moments which oppose the effect of the vibration generated by the driveline. The control signal thus formed is applied to the system for controlling the collective pitch of blades of the rotor.

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