Suspension device for a transmission box of a rotary-wing aircra

Details Suspension device for a transmission box of a rotary-wing aircra Suspension device for a transmission box of a rotary-wing aircra

1997-04-03

1998-09-29

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft, heavier-than-air

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

244 1713, B64C 2751

Patent

active

058136266

ABSTRACT:
The present invention relates to a suspension device for a transmission box (BT) of a rotary-wing aircraft, including bearing pieces (2) connected to the upper part (3) of the transmission box (BT), a suspension system (SU) which connects the lower part (9) of the transmission box (BT) to the fuselage (F) of the aircraft and which includes suspension leaves (5), and resonator means (7) which are associated respectively with the said bearing pieces (2) and which include a mass support (13) secured to the associated suspension leaf (5) and equipped with a flapping mass (MB). According to the invention, the said device additionally includes tuning means (18, 19) associated with the said resonator means (7) and capable of tuning their natural frequencies.

REFERENCES:
patent: 4431148 (1984-02-01), Mouille
patent: 5190244 (1993-03-01), Yana
patent: 5458222 (1995-10-01), Pla et al.

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