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Efficiency study comparing two helicopter planetary reduction stagesA study was conducted to compare the efficiency of two helicopter transmission planetary reduction stages. Experimental measurements and analytical predictions were made. The analysis predicted and experiments verified that one planetary stage was a more efficient design due to the type of planet bearing used in the stage. The effects of torque, speed, lubricant type, and lubricant temperature on planetary efficiency are discussed.
Document ID
19900063589
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Krantz, Timothy L. (NASA Lewis Research Center Cleveland, OH, United States)
Handschuh, Robert F. (NASA Lewis Research Center; U.S. Army, Propulsion Directorate, Cleveland OH, United States)
Date Acquired
August 14, 2013
Publication Date
July 1, 1990
Subject Category
Mechanical Engineering
Report/Patent Number
AIAA PAPER 90-2156
Report Number: AIAA PAPER 90-2156
Accession Number
90A50644
Distribution Limits
Public
Copyright
Other

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