| 大迎角下椭圆截面头部细长体的涡系和压强分布 |
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| 引用本文： | 熊善文,冯亚南.大迎角下椭圆截面头部细长体的涡系和压强分布[J].空气动力学学报,1988(1). |
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| 作者姓名： | 熊善文 冯亚南 |
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| 作者单位： | 北京航空学院
(熊善文)，北京航空学院(冯亚南) |
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| 摘 要： | 本文对具有椭圆截面头部和尖拱形头部的细长体在大迎角下进行了涡系流态观察和表面压强分布测量。研究阐明了大迎角侧滑下细长体的头部几何形状与其所生的复杂涡系之间的相互关系,以及与此相应的截面压强分布和轴向侧力分布的变化。通过详细地了解整个流动情况,揭示了具有扁平头部的细长机体能够增大航向静稳定性的机理。
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| 关 键 词： | 细长体 涡系 航向稳定性 大迎角空气动力学 |
VORTEX SYSTEM AND PRESSURE DISTRIBUTION OF SLENDER BODIES WITH ELLIPTICAL CROSS-SECTION NOSE AT HIGH ANGLE OF ATTACK |
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| Xiong Shanwen Feng Yanan.VORTEX SYSTEM AND PRESSURE DISTRIBUTION OF SLENDER BODIES WITH ELLIPTICAL CROSS-SECTION NOSE AT HIGH ANGLE OF ATTACK[J].Acta Aerodynamica Sinica,1988(1). |
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| Authors: | Xiong Shanwen Feng Yanan |
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| Institution: | Beijing Institute oj Aeronautics and Astronautics |
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| Abstract: | Vortex flow pattern visualizations and suface pressure measurements of slender bodies with elliptical cross-section nose at high angle of attack were conducted in water tunnel and wind tunnel at low speed.Present investigation clarified the correlation between nose shape and its complicated vortex system and correspoding variation of the cross-section pressure distributions and local side force along axis at high angle of attack and sideslip.By means of understanding the whole flow in detial,the mechanism how a flattened nose shape contributes a directional stability to the body was revealed. |
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| Keywords: | slender bodies vortex system directional stability aerodynamics at high angle of attack |
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