The effects of vortex breakdown on the static rolling aerodynamics of finned slender body

• 来源期刊: 中国科学:物理学 力学 天文学（英文版）
• 年，卷（期）: 2014,（11）
• 页码范围: 2174-2176
• 页数: 3页
• 语种: 中文
• DOI: 10.1007/s11433-014-5564-4

摘要

The static rolling aerodynamics of a finned slender body is numerically studied in this paper.Simulation results show a nonlinear uprising of the rolling moment when the angle of attack is greater than 20° in subsonic flows.Asymmetric vortex break down phenomenon on the "horizontal" rudders is found to be responsible for this phenomenon.By introducing the geometric-equivalent angle of attack and geometric-equivalent sweep angle,the cause of the nonlinear rolling moment characteristics can be explained by the delta wing vortex breakdown analysis.