NDLI: Full-scale transmission testing to evaluate advanced lubricants

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Full-scale transmission testing to evaluate advanced lubricants

Content Provider	NASA Technical Reports Server (NTRS)
Author	Decker, Harry J. Lewicki, David G. Shimski, John T.
Copyright Year	1992
Description	Experimental tests were performed on the OH-58A helicopter main rotor transmission in the NASA Lewis 500 hp helicopter transmission test stand. The testing was part of a lubrication program. The objectives are to develop and show a separate lubricant for gearboxes with improved performance in life and load carrying capacity. The goal was to develop a testing procedure to fail certain transmission components using a MIL-L-23699 based reference oil and then to run identical tests with improved lubricants and show improved performance. The tests were directed at parts that failed due to marginal lubrication from Navy field experience. These failures included mast shaft bearing micropitting, sun gear and planet bearing fatigue, and spiral bevel gear scoring. A variety of tests were performed and over 900 hrs of total run time accumulated for these tests. Some success was achieved in developing a testing procedure to produce sun gear and planet bearing fatigue failures. Only marginal success was achieved in producing mast shaft bearing micropitting and spiral bevel gear scoring.
File Size	9020019
Page Count	10
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19920017317
Archival Resource Key	ark:/13960/t0sr3sp1m
Language	English
Publisher Date	1992-01-01
Access Restriction	Open
Subject Keyword	Mechanical Engineering Performance Tests Lubricants Bearings Helicopter Propeller Drive Load Carrying Capacity Rotary Wings Pitting Gears Test Stands Beams Supports Lubricating Oils Helicopter Performance Lubrication Failure Transmissions Machine Elements Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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