北京航空航天大学学报 ›› 2003, Vol. 29 ›› Issue (12): 1087-1090.

• 论文 • 上一篇    下一篇

大展弦比柔性机翼的气动弹性分析

谢长川, 吴志刚, 杨超   

  1. 北京航空航天大学 航空科学与工程学院, 北京 100083
  • 收稿日期:2003-06-30 出版日期:2003-12-31 发布日期:2010-09-21
  • 作者简介:谢长川(1976-),男,陕西西安人,博士生, xiechangc@sina.com.

Aeroelastic analysis of flexible large aspect ratio wing

Xie Changchuan, Wu Zhigang, Yang Chao   

  1. School of Aeronautics Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2003-06-30 Online:2003-12-31 Published:2010-09-21

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.

Abstract: Aeroelastic phenomena are significant for high-altitude long-endurance aircrafts for the large aspect ratio wing. The effect of structural geometric-nonlinear on wing dynamic characteristics and the changes of unsteady aerodynamics 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 using quasi-linear method and its unsteady aerodynamics by strip theory. Through the calculation of the wing, it can be concluded that the flutter speed decreases significantly under large deformation.

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