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Volume 27 Issue 1
Jan.  2001
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Journal of Beijing University of Aeronautics and Astronautics  > 2001  >  27(1): 51-53.
WANG Jin-jun, LIU Ji-ying, XUE Qi-zhiet al. Experimental Studies on Leading-Edge Vortex Breakdown and Control of Flow over 76°/40° Double Delta Wing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2001, 27(1): 51-53. (in Chinese)
Citation: WANG Jin-jun, LIU Ji-ying, XUE Qi-zhiet al. Experimental Studies on Leading-Edge Vortex Breakdown and Control of Flow over 76°/40° Double Delta Wing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2001, 27(1): 51-53. (in Chinese)
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Experimental Studies on Leading-Edge Vortex Breakdown and Control of Flow over 76°/40° Double Delta Wing

  • Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics

  • Received Date: 24 Aug 1999
  • Publish Date: 31 Jan 2001
    Abstract
  • The flow visualization techniques has been used to investigate the effects of trailing-edge jets on the leading-edge vortex breakdown and its control of flow over a 76°/40° double Delta wing. The experimental results indicate that the trailing-edge jets can delay the leading-edge vortex breakdown efficiently, and this delay increases with the angle of attack. The trailing-edge jets can greatly improve the asymmetrical characteristics of the leading-edge vortex breakdown at large angle of attack, and the possible occurrence of "rock" phenomenon may be overcome. In addition, the trailing-edge jets may weaken or even eliminate the mixing phenomenon of the leading-edge vortex, which is in advantage of the flight control of aircraft.

     

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    • References(1)
  • [1] Visser K, Iwanski K, Nelson R,et al. Control of leading edge vortex breakdown by blowing. AIAA Paper 88-0504,1988. [2] Magness C, Robinson O, Rockwell D. Control of leading edge vortices on a delta wing. AIAA Paper 89-0999,1989. [3] Roos F W, Kegelman J T.Recent explorations of leading edge vortex flowfields. NASA CP3149,1990.157~172. [4] Helin H E,Watry C W.Effects of trailing-edge jet entrainment on delta wing vortices[J]. AIAA Journal,1994,32(4):802~804. [5] Nawrocki D.Differential and vectored trailing edge jet control of delta wing vortices. AIAA Paper 95-0008,1995. [6] 王晋军,苗福友,钮珍南,等.后缘喷流对三角翼前缘涡的影响[J]. 空气动力学学报,2000,18(2):125~131. [7] 王晋军,刘激瀛,薛启智.矢量喷流对65°三角翼前缘涡破裂的影响[J]. 流体力学测量与控制,2000,14(3):61~65. [8] 刘激瀛,王晋军,薛启智.60°三角翼前缘涡破裂及其控制实验研究[J]. 实验力学,2000,15(2):206~210.
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