UNSTART PHENOMENON DUE TO THERMAL CHOKE IN SCRAMJET MODULE
UNSTART PHENOMENON DUE TO THERMAL CHOKE IN SCRAMJET MODULE
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DOI：
10.2514/6.2001-1887
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发表时间：
2001-04
期刊：
影响因子：
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通讯作者：
S. Mashio;K. Kurashina;T. Bamba;Shingo Okimoto;S. Kaji
中科院分区：
文献类型：
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作者：
S. Mashio;K. Kurashina;T. Bamba;Shingo Okimoto;S. Kaji
在马赫数为2的预热风洞中，对超燃冲压发动机组件内喷氢热阻塞流的增长机理进行了研究。进行了不同燃料当量比的试验，考察了当量比对进气量的影响。在高当量比下，由于热窒息而出现不启动转变，表现为静压和总温的不连续性，对进气量的影响显着。瞬间转换，传播速度相当快。其机制尚未明确，但讨论了一些可能性。
Growth mechanism of thermally choked flow was investigated by hydrogen injection into scramjet module in the Mach 2 preheated wind tunnel. Experiments were performed in variation of fuel equivalence ratio and its effect on air-intake were examined. In high equivalence ratio, unstart transition due to thermal choke appeared in terms of discontinuity of static pressure and total temperature and the effect on air-intake was remarkable. The transition was performed instantly and the propagation speed was fairly high. The mechanism is not cleared yet but some possibilities are discussed.