航空学报 > 2004, Vol. 25 Issue (6): 546-550

一种新的自由涡尾迹计算方法

曾洪江, 胡继忠   

  1. 北京航空航天大学直升机研究设计所 北京 100083
  • 收稿日期:2003-08-21 修回日期:2004-03-15 出版日期:2004-12-25 发布日期:2004-12-25

New Method of Free Wake Calculation

ZENG Hong-jiang, HU Ji-zhong   

  1. Helicopter Research Institute, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
  • Received:2003-08-21 Revised:2004-03-15 Online:2004-12-25 Published:2004-12-25

摘要: 在使用自由涡理论进行旋翼气动计算时,尾迹几何结构的确定是计算旋翼气动载荷以及空间流场计算的关键。发展了一种新的自由涡尾迹结构计算方法,该方法能快速得到收敛的尾迹结构,能比较准确地计算桨叶载荷分布。算例与实验数据的比较验证了该方法的正确性。

关键词: 直升机, 自由尾迹, 尾迹结构, 旋翼气动载荷, 尾迹收敛性

Abstract: In calculating rotor aerodynamics and velocity field by using free wake theory, it is the key to determine the wake geometry structure. A new free wake method is developed to calculate the convergent wake structure and blade aerodynamic load distribution. Computation results are compared to the experimental data. The well coincidence shows that the method is correct.

Key words: helicopter|free wake|wake geometry|rotor aerodynamics|wake convergence