The device of the attenuation of the vibrations to the rotor of helicopter

摘要

The damper consists of a rotary suspended member (20) situated on the underside of the rotor blade support arm on a vertical axle (24). The suspended member has a vertical axis of rotation (B1) which is offset relative to the axis (A1) of its suspension axle and situated closer to the suspended member's centre of inertia. The damper is equipped with a regulator to adjust the distance between the two axes (A1, B1), comprising a spacer plate with a series of apertures for fixing pegs. In addition, the weight of the suspended member can be varied by means of a disc (36) bolted to its underside.