Split torque geared power transmissions with composite...

Details Split torque geared power transmissions with composite... Split torque geared power transmissions with composite...

2011-03-01

2011-03-01

Michener, Joshua J (Department: 3644)

Aeronautics and astronautics

Aircraft power plants

Transmission of power

C244S017110, C074S66500G, C074S66500G

Reexamination Certificate

active

07896287

ABSTRACT:
A light weight, split torque, geared power transmission having a reduced number of gears and useful for, e.g., transmitting power from an engine to the main rotor of a rotorcraft, includes a ring gear having a pair of oppositely facing angular bevel gears respectively formed on opposite sides of a medial plane thereof, and a first pinion having an elongated drive shaft extending through the medial plane of the ring gear and disposed at an oblique angle relative thereto. The first pinion includes a pair of cylindrical gears mounted coaxially on the drive shaft and respectively disposed in conjugate meshing engagement with respective ones of the bevel gears of the ring gear. An elongated annular output shaft made of a strong, light weight composite material is coupled to a circumferential periphery of the ring gear.

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Goldfarb/Lunin/Trubachev, “Direct Digital Simulation for Gears”, vol. I, 2005 (pp. 1-100).

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