| 跨音速运输机机身后体对航向静稳定性影响研究 |
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| 引用本文： | 白俊强,程泽荫,高正红.跨音速运输机机身后体对航向静稳定性影响研究[J].飞行力学,2004,22(1):18-21. |
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| 作者姓名： | 白俊强 程泽荫 高正红 |
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| 作者单位： | 1. 西北工业大学,航空学院,陕西,西安710072
2. 西安飞机工业,集团,有限责任公司,设计部,陕西,西安710072 |
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| 摘 要： | 采用课题组开发的CFD数值计算软件分别研究了跨音速上单翼布局运输飞机机身后体对航向静稳定导数的影响。研究过程中选择了两种后体构型型面：圆型面和立椭圆型面．分别对其气动力特性进行了计算分析。结果表明：圆型面后体的机身提供的航向静不稳定导数比立椭圆型面后体的机身提供的航向静不稳定导数大17．5％。
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| 关 键 词： | 跨音速运输机 机身后体 航向静稳定性 计算流体力学 气动力特性 |
| 文章编号： | 1002-0853(2004)01-0018-04 |
| 修稿时间： | 2003年6月30日 |
Study of the Impact of Afterbody Shape on Weathercock Stability for Transonic Transport Airplane |
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| BAI Jun-qiang,CHENG Ze-yin,GAO Zheng-hong.Study of the Impact of Afterbody Shape on Weathercock Stability for Transonic Transport Airplane[J].Flight Dynamics,2004,22(1):18-21. |
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| Authors: | BAI Jun-qiang CHENG Ze-yin GAO Zheng-hong |
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| Institution: | BAI Jun-qiang~1,CHENG Ze-yin~2,GAO Zheng-hong~1 |
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| Abstract: | The afterbody shape gives an impact on aerodynamics and flight performance of an airplane. Design of afterbody shape is an important and necessary work for transonic transport airplane design and a challenge of design aerodynamics. In this paper, the impact of afterbody shape on weathercock stability of transonic military transport airplane was studied by using the reliable CFD analysis software. Compared with two afterbody having different section contours, one is circle section, the other is up-ellipse section, the coefficient of weathercock unstable stability decreases 17.5% by using the up-ellipse section. The result shows that using the up-ellipse section of afterbody decreases the coefficient of weathercock unstable stability of body and improves the flight performance of transonic military transport airplane. |
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| Keywords: | transport airplane afterbody weathercock stability computational fluid dynamics (CFD) |
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