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

FIELD: aviation.

SUBSTANCE: invention relates to the field of aviation, in particular to structures of vibration damping devices for helicopters. A vibration damping device for helicopter (15, 15’), adapted for damping of vibrations transmitted by propeller (4) to fuselage (2), contains two first threaded elements (21a, 21b; 20a, 20b) moving in parallel along first axis (B) and adapted for vibration in parallel to specified first axis (B), two second threaded elements (20a, 20b; 21a, 21b) rotating around specified first axis (B) and functionally connected to corresponding specified first threaded elements (21a, 21b; 20a, 20b), so that, when operated, to rotationally vibrate around specified first axis (B), first inerter (16) and second inerter (17). First inerter (16) contains first nut (21a), first screw (20a), and a group of first threaded rollers (22a) made with the possibility of being screwed on specified first nut and first screw (21a, 20a). Second inerter (17) contains second nut (21b), second screw (20b), and a group of second threaded rollers (22b).

EFFECT: maximal increase in a service life of a damping device of an inertial type.

15 cl, 7 dwg