| 翼型外形高气动效率/低可探测性的优化 |
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| 引用本文： | 朱自强,Zubair Islam,朱一琨,李海明.翼型外形高气动效率/低可探测性的优化[J].航空学报,1998,19(6):2-7. |
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| 作者姓名： | 朱自强 Zubair Islam 朱一琨 李海明 |
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| 作者单位： | 北京航空航天大学流体力学研究所,北京,100083 |
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| 摘 要： | 采用ｖａｎＬｅｅｒ矢通量分裂格式求解Ｅｕｌｅｒ方程的方法计算了绕翼型的气动特性；采用矢通量分裂方法计算了绕翼型的时域电磁散射场特性及雷达散射截面积（ＲＣＳ）；采用一种简单而有效的数值优化方法对流场解和电磁场解进行了翼型外形高气动效率／低可探测性的优化计算。算例结果表明，本方法提供了一种对翼型既可作气动优化设计亦可进行多学科综合设计的有效工具。
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| 关 键 词： | 数值优化 Euler方程 Maxwel方程 气动／隐形综合设计 |
AIRFOIL SHAPE OPTIMIZATION FOR HIGH AERODYNAMIC EFFICIENCY/LOW OBSERVABILITY |
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| Zhu Ziqiang,Zubair Islam,Zhu Yikun,Li Haiming.AIRFOIL SHAPE OPTIMIZATION FOR HIGH AERODYNAMIC EFFICIENCY/LOW OBSERVABILITY[J].Acta Aeronautica et Astronautica Sinica,1998,19(6):2-7. |
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| Authors: | Zhu Ziqiang Zubair Islam Zhu Yikun Li Haiming |
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| Institution: | Institute of Fluid Mechanics, Beijing University of Aeronautics and Astronautics, Beijing, 100083 |
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| Abstract: | van Leer's splitting scheme is used to solve the Euler equations to obtain the aerodynamic characteristics. The vector flux splitting scheme is used to calculate the time domain electromagnetic scattered characteristics . Radar cross section (RCS) is then evaluated with the equivalence principle and Fast Fourier Transformation . Two obtained solutions are coupled with a simple effective numerical optimization algorithm to obtain high aerodynamic efficiency and low observability of the airfoil. Numerical results show that the present method is an effective and robust tool for designing or revising airfoils, as well as for multi disciplinary optimization. |
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| Keywords: | numerical optimization Euler equations of motion Maxwell equation multi disciplinary optimization |
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