航空学报 > 2007, Vol. 28 Issue (1): 14-19

细长三角翼滚转/侧滑耦合运动的数值研究

杨云军,崔尔杰,周伟江   

  1. 航天空气动力技术研究院
  • 收稿日期:2005-07-12 修回日期:2006-07-30 出版日期:2007-01-10 发布日期:2007-01-10
  • 通讯作者: 杨云军

Numerical research on roll and sideslip coupling motions about a slender delta-wing

YANG Yun-jun,CUI Er-jie,ZHOU Wei-jiang   

  1. China Academy of Aerospace Aerodynamics
  • Received:2005-07-12 Revised:2006-07-30 Online:2007-01-10 Published:2007-01-10
  • Contact: YANG Yun-jun

摘要:

采用亚迭代耦合求解流体动力学方程和刚体动力学方程数值研究方法,建立无时间滞后的耦合数值手段来分析研究飞行器非定常的耦合运动特征,研究细长三角翼多自由度非定常的耦合关联运动。研究表明:在流动结构失稳后机体运动逐步形成极限环振荡的自维持运动,滚转力矩系数滞回曲线呈现典型的“双8”稳定形态;在滚转和侧滑两自由度下,三角翼进行“落叶式飘荡”耦合运动,自激滚转振荡更为剧烈。

关键词: 计算流体力学, 翼摇滚, 亚迭代, 极限环, 耦合运动

Abstract:

By sub-iterative synchronous solution of fluid dynamics equations and rigid-body dynamics equations, a coupling numerical method is proposed to explore the unsteady movement characteristics of aero-craft and to study the unsteady multi-freedom connected movements about a slender delta-wing. It is shown that the motion develops gradually to a self-maintained stable limit-cycle-oscillation after the flow structure becomes unstable. The roll moment curve in one cycle takes on a typical stable “double 8” form.

Key words:  , CFD,  , wing , rock,  , sub-iterative,  , limit , cycle,  , coupling , motion

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