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Design of an advanced 500-HP helicopter transmissionA 500-hp Advanced Technology Demonstrator helicopter transmission was designed by an American aerospace company under a NASA contract. The project was mainly concerned with designing a 500-hp version of the OH-58C 317-hp transmission which would have the capabilities for a long, quiet life at a minimum increase in cost, weight, and space, which usually increase along with power increases. This objective was accomplished by implementing advanced technology which has been developed during the last decade and by making improvements dictated by field experience. The improvements are related to bearings made of cleaner gear steels, spiral bevel gears made of cleaner gear steels, high contact ratio spur gear teeth in the planetary which will reduce noise level and increase gear life, and modifications concerning the sun gear.
Document ID
19830043616
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Braddock, C. E.
(Bell Helicopter Textron Fort Worth, TX, United States)
Date Acquired
August 11, 2013
Publication Date
November 1, 1982
Subject Category
Aircraft Propulsion And Power
Meeting Information
Meeting: American Helicopter Society, Specialists Meeting on Rotary Wing Propulsion Systems
Location: Williamsburg, VA
Start Date: November 16, 1982
End Date: November 18, 1982
Sponsors: American Helicopter Society
Accession Number
83A24834
Funding Number(s)
CONTRACT_GRANT: NAS3-21595
Distribution Limits
Public
Copyright
Other

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