Assessment of worm gearing for helicopter transmissions
By: Lev Chaiko.
Contributors: United States. National Aeronautics and Space Administration.
Series: NASA technical memorandum -- 102441.; AVSCOM technical memorandum -- 89-C-010.
Publisher: National Aeronautics and Space Administration; For sale by the National Technical Information Service
Published: 1990
Place of publication: [Washington, DC]; [Springfield, Va
Language: eng
Format: Microform
Subjects: Gearing, Worm.; Helicopters -- Transmission devices.
Notes: Distributed to depository libraries in microfiche.

Microfiche. [Washington, D.C.? : National Aeronautics and Space Administration], 1990. 1 microfiche.