Aeronautics and astronautics – Aircraft – heavier-than-air – Helicopter or auto-rotating wing sustained – i.e. – gyroplanes
Patent
1980-10-29
1982-12-28
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft, heavier-than-air
Helicopter or auto-rotating wing sustained, i.e., gyroplanes
244 1727, 188378, 188380, 267 615, 267136, B64D 4700, F16F 902
Patent
active
043657702
ABSTRACT:
A variable frequency vibration absorber adapted to be fixedly mounted in a fixed vibration prone system to coact with the system principal vibration excitation source to control system vibration. The vibration absorber is bifilar in construction and the natural frequency thereof is varied in proportion to the frequency of the vibration being generated by the principal system excitation source.
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Mard Kenneth C.
Washburn S. John
Barefoot Galen L.
Hauschild Vernon F.
United Technologies Corp.
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