| 大展弦比柔性机翼的气动弹性分析 |
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| 引用本文： | 谢长川,吴志刚,杨超.大展弦比柔性机翼的气动弹性分析[J].北京航空航天大学学报,2003,29(12):1087-1090. |
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| 作者姓名： | 谢长川 吴志刚 杨超 |
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| 作者单位： | 北京航空航天大学 航空科学与工程学院, 北京 100083 |
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| 摘 要： | 高空长航时飞机普遍具有大展弦比机翼,其气动弹性问题尤为突出.考虑机翼结构的几何非线性对结构刚度的影响和机翼平面变形对非定常气动力的影响,采用准模态的思想进行大变形下的振动工程分析,并利用片条理论计算变形机翼的非定常气动力,然后进行颤振计算.以某型飞机机翼为例的计算表明,随变形幅度增大,机翼的颤振速度有明显的下降.
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| 关 键 词： | 颤振 气动弹性 几何非线性 大展弦比机翼 非定常气动力 |
| 文章编号： | 1001-5965(2003)12-1087-04 |
| 收稿时间： | 2003-06-30 |
| 修稿时间： | 2003年6月30日 |
Aeroelastic analysis of flexible large aspect ratio wing |
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| Xie Changchuan,Wu Zhigang,Yang Chao.Aeroelastic analysis of flexible large aspect ratio wing[J].Journal of Beijing University of Aeronautics and Astronautics,2003,29(12):1087-1090. |
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| Authors: | Xie Changchuan Wu Zhigang Yang Chao |
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| Institution: | School of Aeronautics Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | Aeroelastic phenomena are significant for high-altitude long-endurance aircrafts for the large aspect ratio wing. The effect of structural geometric- n onlinear on wing dynamic characteristics and the changes of unsteady aerodynamic s due to the large static deformation of wing were studied. The wing flutter was carried out based on the result of large deflected wing vibration analysis usin g quasi-linear method and its unsteady aerodynamics by strip theory. Through th e calculation of the wing, it can be concluded that the flutter speed decreases s ignificantly under large deformation. |
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| Keywords: | flutter aeroelasticity geometric-nonlinear large aspect ratio wing unsteady aerodynamics |
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