Device for damping the vibrations of a rotary-wing aircraft roto

Details Device for damping the vibrations of a rotary-wing aircraft roto Device for damping the vibrations of a rotary-wing aircraft roto

1979-02-05

1981-03-10

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With weight-balancing means

Self-shifting or selectively adjustable mass

416500, B64C 2732, F16C 1500

Patent

active

042550840

ABSTRACT:
The invention relates to a device for damping the vibrations of the rotor of a rotary-wing aircraft. This device comprises a flapping weight concentrated near the rotor axis and at least three resiliently deformable elements, such as helical springs. The deformable elements are radially biassed in directions regularly distributed around the rotor axis. The inner ends of the deformable elements directly bear on the flapping weight. Their outer ends directly bear on rigid structure elements, rigidly secured to the rotor hub, so that the biassed deformable elements apply statically balanced centripetal thrusts to the flapping weight.

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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