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MHD-Arc-Ramjet联合循环与AJAX间的性能比较 被引量:6

Comparative Analysis about Performance between MHD-Arc-Ramjet Combined Cycle and AJAX
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摘要 为了提高冲压发动机在更高速度区内的性能,扩展发动机的运行速度范围,需要在并行于发动机的燃烧室处附加一套能量旁路系统。采用热力学方法针对两种带有能量旁路的冲压发动机分别在理想和实际情况下进行了性能分析和比较,结果表明:理想条件下AJAX的单位推力要高于MHD-Arc-Ramjet联合循环;考虑到后者可以在更高的温度下进行能量注入,其在单位推力方面是具有优势的。实际条件下在很宽的飞行Ma范围内MHD-Arc-Ramjet联合循环的单位推力要高于AJAX。 An Energy-bypass system located parallel to combustor has been applied for the performance improvement at high flight speed and extension of flight envelop. The performance analysis about two ramjet engines with energy-bypass system was investigated comparatively based on thermodynamic principle under the ideal and nonideal conditions. And the study results show that under the ideal conditions the specific thrust of AJAX is more than that of MHD-Are-Ramjet combined cycle, and the latter is superior with the consideration that in MHD-Are-Ramjet combined cycle engine the energy should be returned by arc at higher tem- perature, and that under the nonideal conditions MHD-Arc-Ramjet combined cycle engine has higher specific thrust across a wide flight Mach number range.
出处 《宇航学报》 EI CAS CSCD 北大核心 2007年第1期157-161,共5页 Journal of Astronautics
基金 国家自然科学基金(50306003) "863"计划(2002AA722105) 航天支撑基金(Hagong07)资助项目
关键词 航空发动机 MHD—Arc—Ramjet联合循环 MAX 性能比较 能量旁路 Aeronautic engine MHD-Arc-Ramjet combined cycle AJAX Performance analysis Energy-bypass system
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