Landing gear in-flight vibration dampener

Details Landing gear in-flight vibration dampener Landing gear in-flight vibration dampener

1978-01-13

1979-10-30

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

188 1B, 244104CS, 267 34, B64C 2504, F16F 710

Patent

active

041725700

ABSTRACT:
During flight, helicopter landing gears are suspended by a tuning spring m the helicopter airframe to provide limited relative movement between the landing gear masses and the airframe. As the aircraft vibrates due to vertical or in-plane forces at the rotor head, the landing gear masses react oppositely thereto, thus generating balancing forces which are applied to the airframe to balance the rotor excitations.

REFERENCES:
patent: 1104429 (1914-07-01), Lacrotte
patent: 1653361 (1927-12-01), Krammer
patent: 2691496 (1954-10-01), Katzenberger
patent: 3128064 (1964-04-01), Mooney
patent: 4042070 (1977-08-01), Flannelly

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