Evaluation of navy 9 cst oil in Bell helicopter M412 HP gearboxes
By: Zachary S. Henry and William R. Stapper.
Contributors: Stapper, William R.; Lewis Research Center.
Series: [NASA contractor report] -- NASA/CR-1998-208517.; NASA contractor report -- NASA CR-208517.
Publisher: National Aeronautics and Space Administration, Lewis Research Center; National Technical Information Service, distributor
Published: 1998
Place of publication: [Cleveland, Ohio]; [Springfield, Va
Language: eng
Format: Microform
Subjects: Transmissions (Machine elements); Bell aircraft.; Tail rotors.; Lubrication systems.; Lubricants.; Helicopters.; Helicopter propeller drive.
Notes: Shipping list no.: 99-0323.

Microfiche. [Washington, D.C. : National Aeronautics and Space Administration, 1998] 1 microfiche.