Helicopter rotor blade angular movement shock absorber having two chambers fluid filled with intermediate piston gap calibrated spoke movements absorbing following blade rotation frequency.

摘要

The rotor blade shock absorber has a difference channel (33) with two chambers (29,30) which is filled with fluid. The shock absorber (20) has an anti resonant frequency response equal to the rotor rotation frequency such that the filter dynamic component in the absorber and in the gap section (34) is calibrated to absorb spoke movements (31) from the body (25) through the piston (28) at a frequency equal to the rotation frequency of the rotor blades (7 to 12).