Antivibration suspension means for a tie bar of an aircraft power transmission gearbox, an antivibration suspension device, and an aircraft

摘要

An antivibration suspension device (10) comprising at least one tie bar (15) hinged via a bottom end (17) to suspension means (20), the suspension means (20) having a lever (25) extending from a distal end (26) supporting at least one flyweight (30) to a proximal end (27) having a first hinge (35) to a carrier structure (2), a tie bar (15) being hinged via a second hinge (40) to the lever (25). The device includes torsion return means (45) having a rotary actuator (46) with an outlet shaft (47) secured to said lever (25) to generate torque on said lever (25), said device having a computer (50) controlling said actuator (46) to adapt torsion stiffness of the lever (25) to flight conditions.

主权项

1. Antivibration suspension means for a tie bar connecting a power transmission gearbox of an aircraft to a carrier structure, the suspension means comprising a lever extending from a distal end supporting at least one flyweight to a proximal end provided with first hinge means for hinging the lever to a carrier structure, the suspension means having a second hinge for hinging the tie bar to the lever, and including torsion return means fitted with a rotary actuator having an outlet shaft movable in rotation about a torsion axis (AXT), said outlet shaft being secured to said lever to generate torque on the lever proportional to its pivot angle, thereby imparting torsion stiffness to said first hinge, said suspension means including a computer controlling said actuator to adapt said torsion stiffness of the lever to the flight conditions of said aircraft.