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Dynamic Characteristics for Fuel Shutoff Valve of a Gas Generator  

Lee, Joong-Youp (한국항공우주연구원 발사체미래기술팀)
Huh, Hwan-Il (충남대학교 항공우주공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.14, no.4, 2010 , pp. 1-9 More about this Journal
Abstract
Fuel shutoff valve of a gas generator controls propellant mass flowrate of a rocket engine, by using pilot pressure and spring force. The developing fuel shutoff valve can be self sustained even though pilot pressure is removed in an actuator. Therefore, it is necessary to analyze the characteristics of the forces with respect to the opening and closing of the valve in order to evaluate its performance. In light of this, the valve has been designed to adjust the control pressure for the opening of the poppet and to determine the working fluid pressure at which the valve starts to close. This paper also has been designed dynamic model using the AMESim and predicted flow coefficient of the valve by Fluent CFD analysis. Various results from the prediction and the analysis have been compared with experiments. Finally, dynamic characteristics of the valve have been verified with experimental results.
Keywords
GFV; Self Sustained; Force Balance; Liquid Rocket Engine; Open Cycle;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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