Rotorcraft rotor fitted with lead-lag dampers housed in sleeves connecting blades to a hub of the rotor

摘要

A rotorcraft rotor fitted with a device for damping lead-lag oscillations of the blades (2) of the rotor. The blades (2) are hinge-mounted on a rotary hub (1) of the rotor via respective sleeves (3). The damper device comprises a set of dampers (6), each individually housed in a respective one of said sleeves (3) and deformable between two fastening points (8, 9), one with the sleeve and the other with an engagement member (7) for engaging the hub (1) via a linkage (10). For each of the sleeve (3), the damper (6) housed by a given sleeve (3) is in hinged engagement with the linkage (10) via a lever arm (11) hinged to the sleeve (3).

主权项

1. A rotorcraft rotor fitted with a damper device for damping lead-lag oscillations of the blades of the rotor, the blades being individually hinge-mounted on a rotary hub of the rotor via respective sleeves, each sleeve being hinged to the hub, at least about a lead-lag axis oriented substantially parallel to the axis of rotation (A) of the hub, the damper device comprising a set of dampers each individually housed in a said sleeve, each damper being elastically deformable between two fastening points via which fastening points the damper is placed under stress between the sleeve housing it and an engagement member for engaging the hub via a linkage, wherein for each of the sleeves, the damper housed by a given sleeve is in hinged engagement with the linkage via a lever arm hinged to the sleeve.