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Assessment of worm gearing for helicopter transmissionsA high-efficiency hydrostatic worm gear drive for helicopter transmissions is assessed. The example given is for a large cargo helicopter with three 4000-kW engines and transmission reduction ratio of 110. Also contained are: an efficiency calculation, a description of the test stand for evaluating the feasibility of worm gear hydrostatic mesh, a weight calculation, and a comparison with conventional helicopter transmissions of the same power and transmission reduction ratio.
Document ID
19900006607
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Chaiko, Lev (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1990
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
AVSCOM-TM-89-C-010
AD-A228257
E-5212
NAS 1.15:102441
NASA-TM-102441
Report Number: AVSCOM-TM-89-C-010
Report Number: AD-A228257
Report Number: E-5212
Report Number: NAS 1.15:102441
Report Number: NASA-TM-102441
Accession Number
90N15923
Funding Number(s)
PROJECT: RTOP 505-62-OK
PROJECT: DA PROJ. 1L1-61102-AH-45
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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