Helicopter rotor speed changing transmission

Details Helicopter rotor speed changing transmission Helicopter rotor speed changing transmission

1987-10-13

1988-11-08

Barefoot, Galen

Aeronautics and astronautics

Aircraft, heavier-than-air

Airplane and helicopter sustained

244 1719, 244 60, 74665L, B64C 2714, B64C 2726

Patent

active

047830239

ABSTRACT:
A helicopter has two engines adapted to drive a main sustaining rotor and a plurality of auxiliary propulsion means through a transmission system that is selectively operable to vary the relative speeds of rotation of the sustaining rotor and the auxiliary propulsion means depending upon operating conditions.

REFERENCES:
patent: 2653778 (1953-09-01), Bennett et al.
patent: 3362255 (1968-01-01), Rocca et al.
patent: 3782223 (1974-01-01), Watson
patent: 4632337 (1986-12-01), Moore

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