Helicopter main rotor with anti-vibration head includes two pendulums connected to support rotating with hub, pendulum oscillates on hub between two neighboring rotor blades

摘要

Rotor has pendular anti-vibrator with two pendulums (5) each having pendular body (6) connected by rigid arm (7) to support rotating integrally with rotor hub (2). Pendulum oscillates on hub by connection pivoting about pendular movement axis (A-A) spaced from pendulum center of inertia and from rotor axis (Z-Z) and perpendicular to radial plane (P) passing through rotor axis and through pendulum center of inertia. The pendulum oscillates between two neighboring rotor blades (1).