公开(公告)号：US11319061B2

公开(公告)日：2022-05-03

申请号：US16621178

申请日：2018-06-28

Applicant: LEONARDO S.P.A.

Inventor： Attilio Colombo ,  Luigi Bottasso ,  Paolo Pisani ,  Andrea Favarotto ,  Dario Colombo ,  Federico Montagna ,  Roberto Regonini ,  Francesco Braghin ,  Simone Cinquemani

IPC: B64C27/04 ,  B64C27/00 ,  B64C27/08 ,  F16H1/06 ,  F16H1/16 ,  F16H1/28

Abstract: A rotor for an aircraft is described that comprises: a hub rotatable about an axis and, in turn, comprising a plurality of blades; a mast connectable to a drive member of the aircraft and connected to the hub to drive the hub in rotation about the axis; and damping means to dampen the transmission of vibrations to the mast in a plane orthogonal to the axis; the damping means comprising at least a first mass and a second mass that can eccentrically rotate about the axis with a first and a second speed of rotation, respectively; the first mass and second mass are operatively connected to the mast to generate, respectively, a first and a second damping force on the mast having a main component in a direction radial to the axis; the rotor comprises a transmission unit, which is interposed between the mast and the first and second masses so as to drive the first and second masses in rotation.