Helicopter transmission systems

Details Helicopter transmission systems Helicopter transmission systems

1983-03-29

1984-10-30

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft power plants

Transmission of power

244 1711, 416170R, 74665B, 74665E, B64C 2714, B64D 3508

Patent

active

044796196

ABSTRACT:
A helicopter transmission system is disclosed in which drive from three engines is transmitted to two output channels each of which is divided by dividing means to drive two output pinions meshed with a common combining gear rotationally fixed to a sustaining rotor drive shaft. Balancing means are provided to balance the torque transmitted by the respective pairs of output pinions and, in the described embodiment, the balancing means comprise a plurality of meshing spur gears arranged with one of the spur gears drivingly connected to one of the engines and a further two of the spur gears are drivingly connected respectively to the two output channels. Conveniently, a further one of the spur gears provides a power take off to an anti torque rotor drive shaft.

REFERENCES:
patent: 2823558 (1958-02-01), Semar et al.
patent: 2947497 (1960-08-01), Sznycer
patent: 3255825 (1966-06-01), Mouille et al.
patent: 3564937 (1971-02-01), Soloviev et al.
patent: 3602068 (1971-08-01), White
patent: 3782223 (1974-01-01), Watson
patent: 3977632 (1976-08-01), Watson

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