Resonator device for damping the vibrations of a rotor of a rota

Details Resonator device for damping the vibrations of a rotor of a rota Resonator device for damping the vibrations of a rotor of a rota

1979-02-05

1981-08-04

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

042819679

ABSTRACT:
The invention relates to a device for damping the vibrations of a rotary-wing aircraft rotor. An annular weight is disposed concentrically of the rotor axis. This weight is supported by at least three resiliently deformable elements such as helical springs, radially biased in directions distributed regularly around the rotor axis. The inner ends of the springs directly bear on a part extending the rotor shaft axially. Their outer ends directly bear on the annular weight so that the spring apply statically balanced centrifugal thrusts to the annular weight. The springs are so still that they support the annular weight without substantially bending.

REFERENCES:
patent: 2576105 (1951-11-01), Childs
patent: 3219120 (1965-11-01), Hooper
patent: 3298443 (1967-01-01), Burkam et al.
patent: 3387505 (1968-06-01), Rumsey
patent: 3509971 (1970-05-01), Gerstine et al.
patent: 3910720 (1975-10-01), Vincent
patent: 4044628 (1977-08-01), Jacks
patent: 4145936 (1979-03-01), Vincent et al.
patent: 4160390 (1979-07-01), Spaetgens

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