| 三维侧压式高超声速进气道阻力特性分析 |
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| 引用本文： | 卫永斌,张堃元.三维侧压式高超声速进气道阻力特性分析[J].航空动力学报,2009,24(7):1594-1600. |
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| 作者姓名： | 卫永斌 张堃元 |
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| 作者单位： | 南京航空航天大学能源与动力学院,南京,210016 |
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| 基金项目： | 国家863基金(2008AA7050404) |
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| 摘 要： | 为了研究三维侧压式高超声速进气道(取喉道以前)的内部阻力特性,采用了数值模拟、流线追踪技术和等动载条件(Ma=4.65~6.65),结果表明:①压差阻力、总阻力均随马赫数的增加而减小;摩擦阻力则随马赫数的增加而增加,其所占比重的最大值不超过20%;②推力效率、推阻比都随马赫数的增加而增大,它们分别增加了13.8%和2.73;③附加阻力随马赫数的增加而减小,在高马赫数下,附加阻力会变成实际意义上的"附加推力".
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| 关 键 词： | 三维侧压式高超声速进气道 压差阻力 摩擦阻力 附加阻力 推力效率 推阻比 |
| 收稿时间： | 2008/7/17 0:00:00 |
| 修稿时间： | 12/1/2008 3:55:24 PM |
Analysis of drags trait in three-dimensional sidewall hypersonic inlet |
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| WEI Yong-bin and ZHANG Kun-yuan.Analysis of drags trait in three-dimensional sidewall hypersonic inlet[J].Journal of Aerospace Power,2009,24(7):1594-1600. |
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| Authors: | WEI Yong-bin and ZHANG Kun-yuan |
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| Institution: | College of Energy and Power Engineering;Nanjing University of Aeronautics and Astronautics;Nanjing 210016;China |
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| Abstract: | The internal drag trait of three-dimensional sidewall hypersonic inlet(before the throat) has been investigated by numerical simulation,streamline tracing and constant dynamic pressure of incoming flow(variation of Ma=4.65~6.65).The results show that: 1) Pressure drag and total drag on the internal walls decrease when the Ma increases,but the friction drag on the internal walls increases when the Ma increases and the ratio of friction drag is less than 20%.2) Thrust efficiency and thrust and drag ratio incr... |
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| Keywords: | three-dimensional sidewall hypersonic inlet pressure drag friction drag additive drag thrust efficiency thrust and drag ratio |
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