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Study on the performance improvement of a Main Oxidizer shut-off Valve  

Bae, Young-Woo ((주)한화)
Kim, Do-Hyung ((주)한화)
Hong, Moon-Geun (한국항공우주연구원 발사체미래기술팀)
Lee, Soo-Yong (한국항공우주연구원 발사체미래기술팀)
Jang, Ki-Won ((주)한화)
Publication Information
Aerospace Engineering and Technology / v.9, no.2, 2010 , pp. 63-72 More about this Journal
Abstract
MOV(Main Oxidizer shut-off Valves) control the combustion of launch vehicle systems by the supply and the isolation of liquid oxygen to a main combustion chamber in launch vehicle systems. Moreover, the MOV should secure a constant flow rate of liquid oxygen for combustion instability in the steady operational state. Although it has been showed that a EM(Engineering Model) with a high discharge coefficient value compared with the TM(Technology Model) fills the overall performance requirements, additional design modifications in some critical parts of the EM were conducted to improve the performance. The configurations of the pressure-control body, the middle flange, and the rips of the inlet body of the EM were modified and the performance tests have been performed with test models. Consequently, the intended improvements have been verified by the performance tests.
Keywords
Main oxidizer valve; leakage test; cryogenic test; soaking;
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