| 超声速进气道及冲压发动机动态特性分析 |
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| 引用本文： | 刘华,雍雪君,梁俊龙,吴宝元.超声速进气道及冲压发动机动态特性分析[J].火箭推进,2012(3):17-22. |
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| 作者姓名： | 刘华 雍雪君 梁俊龙 吴宝元 |
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| 作者单位： | 西安航天动力研究所,陕西西安710100 |
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| 基金项目： | 国家“863”项目（2007AA705302） |
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| 摘 要： | 基于小偏差线性化思想,利用超声速进气道动力学模型计算得到,进气道激波位置和波后压力的响应幅值随频率增大整体趋于减小,但在各阶纵向谐振频率上存在谐振峰。并进一步考虑了燃烧室加质燃烧,分析了冲压发动机气路动态特性,推导出适用于冲压发动机的集中燃烧模型,研究表明在燃油喷注流量的扰动下,冲压发动机幅频响应谐振峰显著。
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| 关 键 词： | 超声速进气道 冲压发动机 动态特性 燃烧模型 燃油扰动 |
Analysis of supersonic air inlet and ramjet dynamic characteristics |
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| LIU Hua,YONG Xue-jun,LIANG Jun-long,WU Bao-yuan.Analysis of supersonic air inlet and ramjet dynamic characteristics[J].Journal of Rocket Propulsion,2012(3):17-22. |
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| Authors: | LIU Hua YONG Xue-jun LIANG Jun-long WU Bao-yuan |
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| Institution: | (Xi＇ an Aerospace Propulsion Institute, Xi＇ an 710100, China) |
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| Abstract: | A result, in which the air inlet shock wave position and the wave downstream pressure amplitude decreased with the frequency increase, but there was a harmonic peak on the longitudinal harmonic frequency, was obtained by calculation of supersonic air inlet dynamics model based on a linearization method. The fuel addition in the combustion chamber was farther considered. The dy- namic characteristics of ramjet air path were analyzed. A combustion model applying to the ramjet was deduced out for the ramjet dynamics analysis. The research indicates that the harmonic peak of ramjet amplitude-fxequency response is obvious under the perturbation of fuel jet flow. |
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| Keywords: | supersonic air inlet ramjet dynamical characteristic combustion model fuel flowperturbation |
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