VIBRATION DAMPING DEVICE FOR HELICOPTER Russian patent published in 2022 - IPC B64C27/00 F16F7/10 

FIELD: aviation.

SUBSTANCE: invention relates to the field of aviation, in particular to structures of bearing systems of helicopters. Helicopter (2) contains fuselage (3) and propeller (4), at least one device (15) adapted for damping vibrations transmitted from propeller (4) to fuselage (2), and designed for placement between fuselage (2) and propeller (4). Device (15) contains first threaded element (21; 20) functionally connected to propeller (4) and adapted for vibration, when operated in parallel with first axis (B), second threaded element (20; 21) functionally connected to fuselage (4) and functionally connected to first threaded element (21; 20) so that, during the operation, to rotationally vibrate around first axis (B), and a set of threaded rollers (22), which are screwed on first and second threaded elements (21, 20; 20, 21). Rollers (22) can rotate around their corresponding second axes (C) in parallel and separately from first axis (B) relatively to first and second threaded elements (21, 20), rollers (22) can also rotate around first axis (B) relatively to first threaded element (21; 20) and second threaded element (20; 21).

EFFECT: compactness and accuracy of a device, and possibility of damping vibrations of a large amplitude are provided.

14 cl, 5 dwg