Application of Face-Gear Drives in Helicopter Transmissions

Author:

Litvin F. L.1,Wang J.-C.1,Bossler R. B.2,Chen Y.-J. D.3,Heath G.3,Lewicki D. G.4

Affiliation:

1. University of Illinois at Chicago, Chicago, IL 60680

2. Lucas Western, Incorporated, City of Industry, CA 91749

3. McDonnell Douglas Helicopter Company, Mesa, AZ 85205

4. Lewis Research Center, Cleveland, OH 44135

Abstract

The use of face-gears in helicopter transmissions was explored. A light-weight, split torque transmission design utilizing face-gears was described. Face-gear design is discussed. Topics included basic design geometry, tooth generation, limiting inner and outer radii, and recommendation for the gear ratio. Face-gear experimental studies were also included and the feasibility of face-gears in high-speed, high-load applications such as helicopter transmissions was demonstrated. Torque-split tests were performed and demonstrated an accurate split of torque using the face-gear concept.

Publisher

ASME International

Subject

Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials

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