Vibration damper and in particular frequency adapter for a helic

Details Vibration damper and in particular frequency adapter for a helic Vibration damper and in particular frequency adapter for a helic

1983-06-08

1986-01-28

Reger, Duane A.

Spring devices

Resilient shock or vibration absorber

Including energy absorbing means or feature

188268, 188288, 416134A, 416140, F16F 914

Patent

active

045666776

ABSTRACT:
The device comprises two rigid elements 1a, 1b, 2 and an elastomer mass 10 interposed therebetween so as to be deformed when the elements move relative to each other in a longitudinal direction. The device includes a closed space with a restriction element 16 defining two chambers 23, 24 whose volumes vary inversely upon movement of the chamber walls, the two chambers being interconnected by one or more passages, the empty space being filled with a viscous fluid material so as to produce a damping effect in the passages. Application to helicopter blade frequency adapters.

REFERENCES:
patent: 1304311 (1919-05-01), Heldrich
patent: 1983259 (1934-12-01), Weiland
patent: 2514140 (1950-07-01), O'Connor
patent: 3403899 (1968-10-01), Plume
patent: 3658314 (1972-04-01), Luzsicza
patent: 3842945 (1974-10-01), Potter

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