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Study on Starting Pressure of Supersonic Exhaust Diffusers to Simulate high Altitude Environment  

Yoon, Sang-Kyu (한국항공대학교 항공우주 및 기계공학부)
Yeom, Hyo-Won (한국항공대학교 항공우주 및 기계공학부)
Kim, Jin-Kon (한국항공대학교 항공우주 및 기계공학부)
Sung, Hong-Gye (한국항공대학교 항공우주 및 기계공학부)
Kim, Yong-Wook (한국항공우주연구원 추진기관 체계그룹)
Oh, Seung-Hyup (한국항공우주연구원 추진기관 체계그룹)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.12, no.4, 2008 , pp. 16-23 More about this Journal
Abstract
Theoretical and numerical approaches were conducted in order to study supersonic exhaust diffusers to simulate high altitude performance of rockets on the ground. A physical model of concern includes a rocket motor, vacuum chamber, and diffuser, which have axisymmetric configurations. An analysis was conducted to investigate operation characteristics of supersonic exhaust diffusers from a flow-development point of view. Emphasis was placed on theoretical formulation to predict the starting pressure of diffusers, the effect of the vacuum chamber size, and the minimum starting pressure of the rocket motor to start the diffuser.
Keywords
Supersonic Diffuser; High Altitude; Starting pressure; Vacuum Chamber;
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