System for minimizing the dynamic excitation of a helicopter

Details System for minimizing the dynamic excitation of a helicopter System for minimizing the dynamic excitation of a helicopter

1996-03-11

1998-03-31

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft, heavier-than-air

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

244 1713, 244 54, B64C 2704

Patent

active

057329052

ABSTRACT:
System for minimizing the dynamic excitation at the center of gravity of the fuselage of a helicopter, this excitation being brought about by the forces transmitted between the main transmission box and the fuselage, these two components being joined together by suspension bars which each have an elastic linkage device.
According to the invention, each elastic linkage device (2) comprises a cylinder (10), subdivided into two chambers (11, 12) by a piston (13) connected by springs to the two corresponding opposite internal faces (10a, 10b) of the cylinder (10), and the chambers (11, 12) of the cylinder (10) are additionally connected to one another by a pipe (17) which has a small cross section compared with that of the cylinder (10). A computer (6) pilots the movement of liquid in said pipe (17).

REFERENCES:
patent: 2756989 (1956-07-01), Peras
patent: 2830859 (1958-04-01), Parsons
patent: 3701499 (1972-10-01), Schubert et al.
patent: 3752270 (1973-08-01), Valdespino
patent: 4638983 (1987-01-01), Idigkeit et al.
patent: 4811919 (1989-03-01), Jones
patent: 5174552 (1992-12-01), Hodgson et al.
patent: 5228640 (1993-07-01), Mouille
patent: 5251730 (1993-10-01), Ackermann et al.
patent: 5251883 (1993-10-01), Simon et al.
patent: 5316240 (1994-05-01), Girard et al.

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