| 高超声速飞行器前体外形设计与气动特性分析 |
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| 引用本文： | 李晓宇,潘沙,李桦,丁国昊.高超声速飞行器前体外形设计与气动特性分析[J].国防科技大学学报,2007,29(6):10-13. |
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| 作者姓名： | 李晓宇 潘沙 李桦 丁国昊 |
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| 作者单位： | 国防科技大学,航天与材料工程学院,湖南,长沙,410073 |
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| 摘 要： | 利用数值计算开展了高超声速飞行器前体气动特性的考察,重点研究了三维效应对于前体流场及预压缩性能的影响,提出了抑制三维侧缘溢流影响、改善三维前体气动性能的前体侧缘设计思想,考察了侧缘外形的容积效率,提出了有效容积效率的概念和评估方法,对于不同侧缘形式的前体构型进行了气动特性的考察,给出了不同前体构型气动特征的变化规律。
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| 关 键 词： | 高超声速飞行器 乘波构型 升阻比 容积效率 |
| 文章编号： | 1001-2486(2007)06-0010-04 |
| 收稿时间： | 2007/6/15 0:00:00 |
| 修稿时间： | 2007年6月15日 |
Shape Design and Analysis of Hypersonic Forebody Side Edges |
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| LI Xiaoyu,PAN Sh,LI Hua and DING Guohao.Shape Design and Analysis of Hypersonic Forebody Side Edges[J].Journal of National University of Defense Technology,2007,29(6):10-13. |
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| Authors: | LI Xiaoyu PAN Sh LI Hua and DING Guohao |
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| Institution: | College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China;College of Aerospace and Materials Engineering, National Univ. of Defense Technology, Changsha 410073, China |
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| Abstract: | Aerodynamic characteristics of fore-bodies deduced simply from 2D configurations were studied.To restrain the compressed flow from spilling at side edges of forebodies,shaped waverider was added to the forebody sides and features of the new fore-body as waverider were proven by CFD analysis.More discussion about volume efficiency of the new shape was made and a concept as usable volume efficiency was presented.Different shapes side edges were designed,usable volume efficiency of each shape was discussed together with aerodynamic characteristics. |
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| Keywords: | hypersonic vehicle waverider lift to drag ratio volume efficiency |
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