DESIGN AND OPITMIZAITON OF HYDROCARBON-FUELED SCRAMJET STAR-UP SCHEME WITH EXPANSION CYCLE
- Paper number
IAC-11,C4,5,8,x10191
- Author
Mr. Zhang Hua, College of Aerospace and Materials Engineering, National University of Defense Technology, China
- Coauthor
Prof. Shen Chibing, China
- Coauthor
Dr. Wu Xianyu, College of Aerospace and Materials Engineering, National University of Defense Technology, China
- Coauthor
Dr. Tan Jianguo, China
- Coauthor
Dr. Xi Wenxiong, College of Aerospace and Materials Engineering, National University of Defense Technology, China
- Year
2011
- Abstract
Scramjet is the ideal power system and the core component of hypersonic vehicle, and the critical technology of scramjet has been developed with a significant progress, but the starting progress has not caught enough attention. The turbo-pump feed system based on expansion cycle is a competitive scheme for the long-time working scramjet with hydrocarbon-fueled regeneration cooling. The hydrocarbon fuel has transition form cold liquid state to supercritical/cracking state after heated in cooling channels which can be used to drive turbine. The ethylene is adopted to assist ignition/stat of scramjet. Considering heat releasing and unsteady heat transfer, the dynamic models of turbine, pump, pipes, valves, cooling channels and the combustor have been established. The baseline start-up scheme of scramjet is design, and then, the optimization of start-up scheme of scramjet is performed with goal of minimum start-up time and ethylene consumption under the restrictions of pressure pulsation in fuel pipeline and combustion stability in chamber. Finally, the coupling effects of working parameters of start-up process on scramjet performance are discussed in detail. This work has a benefit to improve scramjet start-up technology and to study the dynamical and thermal coupling problem thoroughly.
- Abstract document
- Manuscript document
IAC-11,C4,5,8,x10191.pdf (🔒 authorized access only).
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