| 大攻角非对称涡特性及消除侧向力和力矩方法 |
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| 引用本文： | 曾广存,秦伊贤,丁庆国,袁幼新.大攻角非对称涡特性及消除侧向力和力矩方法[J].空气动力学学报,1988(1). |
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| 作者姓名： | 曾广存 秦伊贤 丁庆国 袁幼新 |
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| 作者单位： | 北京空气动力研究所
(曾广存，秦伊贤，丁庆国)，北京空气动力研究所(袁幼新) |
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| 摘 要： | 本文提出了一个消除非对称力的头部外形方案。通过风洞实验,论证了方案是有效和稳定的。实验发现由对称涡向非对称涡的转变有一个不稳定区,建议用动态测力,得到与激光蒸汽屏流场相一致的结果,并研究其相互关系。
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| 关 键 词： | 大迎角空气动力学 涡 分离流 |
CHARACTERISTICS OF ASYMMETRIC VORTICES AND METHODS TO ALLEVIATE OFF-PLANE FORCES AND MOMENTS |
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| Zeng Guangcun Qin Yixian Ding Qingguo Yuan Youxin.CHARACTERISTICS OF ASYMMETRIC VORTICES AND METHODS TO ALLEVIATE OFF-PLANE FORCES AND MOMENTS[J].Acta Aerodynamica Sinica,1988(1). |
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| Authors: | Zeng Guangcun Qin Yixian Ding Qingguo Yuan Youxin |
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| Institution: | Beijing Institute of Aerodynamics |
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| Abstract: | This paper studies the phenomenon of off-surface forces and moments due to asymmetric vortices on a cylindrical body with ogive nose at high angles of attack in subsonic and transonic flows.Methods to allev'iate those undesirable forces and moments are discussed.An appropriate nose configuration was designed and tested.The results of wind-tunnel experiments and laser vapour screen flow observation proved the configuration to be effective.An unsteady region during the transition of symmetric vortices to asymmetric ones was discovered. |
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| Keywords: | aerodynamics at high angle of attack vortex separated flow |
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