Airbus Helicopters

Eurocopter

Arnaud Varin D'Ainvelle

Vincent Girard

A device () for reducing the vibration of a rotorcraft main rotor () provided with a hub () and a plurality of blades, said device having a support () together with at least one weight element (). Said weight element () is fastened to said support () by connection means (), and said weight element () is connected to said connection means () by guide means () for guiding said weight element () in movement in circular translation in a filter plane (P) that is movable perpendicularly to an elevation axis (AX) of said device (), said connection means () including resilient return means () serving to allow said filter plane (P) to move in elevation while keeping the filter plane (P) perpendicular to said elevation axis (AX) under the effect of said vibration.

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Les Milles, France

Arnaud Varin D'Ainvelle