CONDUCT TEST-TO-FAILURE ON HYDRAULIC PUMPS (VUCKERS AA 65560-LSC-4).
Final rept. for 21 Jun 62-21 Sep 63,
NORTH AMERICAN AVIATION INC LOS ANGELES CALIF
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An investigation into the endurance and performance capability of four Vickers AA 65560-LSC-4 hydraulic pumps subjected to a minimum of 600 hours of operation including repeated cyclic load operations with fast starts at system pressures of 2850 psig to 3100 psig and environments from -65 F to 240F fluid temperatures has been made. Pumps that failed to meet performance requirements were repaired by parts replacement and testing continued until a total of 60 prescribed test spectrums of operating events requiring 10 hours of operation each were repeated. Correlation of the measured wear rates of the various variable volume pumps was established with respect to system parameters which include fluid environment, transient inlet pressure conditions, fluid particle contamination and dynamic loading effects produced by rapid opening and closing operating valves. Results of wear materials from the pumps were analyzed and weighed each 100 hours of operation for significant information directed to determining the mechanical serviceability of the pumps. Operating performance of the test pumps were determined each 60 hours of testing. Author