Testing Pumps in Air

[+] Author and Article Information
J. A. King

Rocketdyne, A Division of North American Aviation, Canoga Park, Calif.

J. Eng. Power 90(2), 97-104 (Apr 01, 1968) (8 pages) doi:10.1115/1.3609173 History: Received July 31, 1967; Online August 25, 2011


Research on pumps, particularly those for transporting cryogenic fluids, is very expensive. Rocketdyne has tested pumps with air as the working fluid and has found that a very good correlation exists between air test data and liquid test data. This paper gives a description of the air rigs used by Rocketdyne and compares the data taken in air with data taken in water, LOX, RP-1, and liquid hydrogen. Also presented is the effect of tip clearance on the head of an axial-flow pump as determined from air tests.

Copyright © 1968 by ASME
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