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Contamination Tolerance of Aircraft Hydraulic Pumps

Report Number: SEG TR 67-5
Author: Hollinger, Richard H.
Author: Donis, John N.
Author: Lare, George F.
Corporate Author: Franklin Institute Research Laboratories
Laboratory: Systems Engineering Group
Date of Publication: 1967-03
Pages: 58
Contract: AF 33(615)-2009
Project: 8128
Task: 812807
AD Number: AD0814826

The first objective of this program was to obtain data on the effect of the hydraulic fluid contaminants on the operation of a typical aircraft hydraulic pump from the point of view of contaminant concentration by weight, by particle size, and by type of contaminant. A second objective was to evaluate the methods used to determine contaminant concentration and a method suited to field use was to be recommended. The report describes the tests performed and gives maximum allowable values for contaminant weight, size, and hardness. Two alternate field contamination test methods are recommended and the weakest point for pump contamination tolerance is discussed

Lockheed Martin Missiles & Fire Control
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