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http://dx.doi.org/10.3795/KSME-B.2010.34.4.391

Cryogenic Performance Test of LOX Turbopump in Liquid Nitrogen  

Kim, Jin-Sun (Dept. of Turbopump, Korea Aerospace Research Institute)
Hong, Soon-Sam (Dept. of Turbopump, Korea Aerospace Research Institute)
Kim, Dae-Jin (Dept. of Turbopump, Korea Aerospace Research Institute)
Choi, Chang-Ho (Dept. of Turbopump, Korea Aerospace Research Institute)
Kim, Jin-Han (Dept. of Turbopump, Korea Aerospace Research Institute)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.34, no.4, 2010 , pp. 391-397 More about this Journal
Abstract
Performance tests of a liquid-oxygen pump were carried out using liquid nitrogen (LN2) as a working fluid in a cryogenic turbopump test facility in Korea Aerospace Research Institute (KARI). The tests were performed at 30-55% of the design rotational speed, and the results were compared with those from a water test. The experimental results confirmed the similarity of the hydraulic performance, which allows the prediction of the pump performance at a design rotational speed of 20,000 rpm. The overall cavitation performance of the pump in the cryogenic environment was better than that in the water environment for all ranges of flow rates and rotational speeds. Critical cavitation number at the design flow rate was determined as 0.012 from the cryogenic test, and as 0.024 from the water test. The improved cavitation performance is due to the thermodynamic effect in cryogenic fluids.
Keywords
Turbopump; Cryogenic Fluid; Cryogenic Cavitation Performance; Liquid Nitrogen;
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Times Cited By KSCI : 4  (Citation Analysis)
Times Cited By SCOPUS : 0
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