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力学与实践 ›› 2012, Vol. 34 ›› Issue (1): 35-38,30.doi: 10.6052/1000-0879-20120106

• 应用研究 • 上一篇    下一篇

翼梢小翼高度影响综合研究

张建军, 钱光平, 杨士普, 司江涛   

  1. 中国商飞上海飞机设计研究院总体气动设计研究部, 上海 200235
  • 收稿日期:2011-08-30 修回日期:2011-10-31 出版日期:2012-02-15 发布日期:2012-02-20
  • 作者简介:张建军, 1982年生, 硕士, 助理工程师.1) 张建军, 1982年生, 硕士, 助理工程师. E-mail: jjzhang028@163.com

STUDY ON THE AIRCRAFT INTEGRATED CHARACTERS WITH DIFFERENT HEIGHT WINGLETS

ZHANG Jianjun, QIAN Guangpin, YANG Shipu, SI Jiangtao   

  1. Shanghai Aircraft Design Research Institute of Commercial Aircraft of China, Shanghai 200235, China
  • Received:2011-08-30 Revised:2011-10-31 Online:2012-02-15 Published:2012-02-20

摘要: 利用有限体积法离散求解雷诺平均Navier-Stokes方程以及气动和结构耦合计算了带2种不同类型翼梢小翼(融合式和鲨鳍式小翼)的翼身组合体构型.重点研究了小翼不同高度对飞机升阻比、机翼压力中心移动量、重量以及颤振特性的影响规律.研究结果表明,因小翼高度增加而带来的结构重量远远低于其有效载重的增量;因小翼高度增加而带来的颤振临界速度的降低在安全余量的范围内是可以调整的.因此,在设计小翼时与结构、重量和颤振的权衡中,建议高度的选择尽量优先满足纵向的升阻特性,以发挥其减阻潜力.

关键词:

翼梢小翼|高度|减阻|重量|颤振

Abstract: This paper considers the wingbody shape with two different types of winglets (the blended winglet and shark winglet) by discretized Reynolds average Navier-Stokes equation and the aero-structure coupled equation. The impact of the different heights of the winglet on the lift-drag ratio, the displacement of the wing pressure center, the weight and the flutter character is studied. The results show that the weight increase of the aircraft structure is smaller than the weight increase of effective loads and that the flutter velocity decrease is adjustable within the safety range. Therefore, it is suggested that the selection of the winglet height should have a priority over the lift-drag ratio character during the trade off between aero and weight & flutter in order to have a good drag reduction.

Key words:

winglet|height|drag reduction|weight|flutter

中图分类号: 

  • V212.11