Experimental and analytical evaluation of efficiency of helicopter planetary stage
By: Timothy L. Krantz.
Contributors: United States. National Aeronautics and Space Administration. Scientific and Technical Information Division.
Series: NASA technical paper -- 3063.; AVSCOM technical report -- 90-C-001.; AVSCOM technical report -- 90-C-1.
Publisher: National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program; For sale by the National Technical Information Service]
Published: 1990
Place of publication: [Washington, DC]; [Springfield, Va
Language: eng
Format: Microform
Subjects: Helicopters -- Transmission devices.
Notes: Distributed to depository libraries in microfiche.

Microfiche. [Washington, D.C. : National Aeronautics and Space Administration, 1991] 1 microfiche.