Constant frequency bifilar vibration absorber

Details Constant frequency bifilar vibration absorber Constant frequency bifilar vibration absorber

1978-08-04

1980-08-19

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With weight-balancing means

Self-shifting or selectively adjustable mass

416500, 74574, B64C 2732

Patent

active

042181879

ABSTRACT:
A bifilar vibration absorber is provided for the main rotor of a helicopter in which the pendular mass is constrained so that the path of motion of its cg relative to the rotor hub is a cycloid.

REFERENCES:
patent: 2353681 (1944-07-01), Martin et al.
patent: 3540809 (1970-11-01), Paul et al.
patent: 3874818 (1975-04-01), Saunders et al.
patent: 3932060 (1976-01-01), Vincent et al.

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