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Advanced Technology Applied to the CH-47D Drive System
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Sector:
Event:
Aerospace Meeting
Language:
English
Abstract
The U.S. Army CH-47D helicopter modernization program incorporates improvements in all major subsystems. The drive train has been redesigned to incorporate evolutionary improvements which will increase reliability, survivability, and maintainability. This paper describes the background experience that led to the selection of VASCO X-2 high-hot-hardness gear steel; it also discusses design improvements in the integration of components, in lubrication and diagnostic systems, in overrunning clutches, and in noise reduction. New capabilities to predict and measure gear bending stresses and resonant frequencies have been developed and are described as part of a systems design approach.
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Authors
Citation
Binder, S. and Mack, J., "Advanced Technology Applied to the CH-47D Drive System," SAE Technical Paper 781040, 1978, https://doi.org/10.4271/781040.Also In
References
- Lemanski, A. J. et al “Evaluation of Advanced Gear Materials for Gear Boxes and Transmissions” Boeing document D210-10025-1 Boeing Vertol Company Philadelphia, Pennsylvania August 1969
- Alberti, J. “Evaluation of Advanced Gear Materials for Gear Boxes and Transmissions” Boeing document D210-10193-1 Boeing Vertol Company Philadelphia, Pennsylvania October 1970
- Alberti, J. et al “Improved Manufacturing Process for the Finishing and Surfacing of Spiral Bevel Gears” Boeing document D210-10323-1 Boeing Vertol Company Philadelphia, Pennsylvania January 1972
- Mack, J. C. “HLH Drive System” Boeing Vertol Company Philadelphia, Pennsylvania Applied Technology Laboratory, U.S. Army Research and Technology Laboratories (AVRADCOM) Fort Eustis, Virginia September 1977
- Sciarra, John J. Howells, Robert W. Lenski, Joseph W., Jr. Drago, Raymond J. Schaeffer, Edward G. “Helicopter Transmission Vibration and Noise Reduction Program” Boeing Vertol Company Philadelphia, Pennsylvania I II Applied Technology Laboratory, U.S. Army Research and Technology Laboratories (AVRADCOM) Fort Eustis, Virginia March 1978