Volume 26 Issue 2
Feb.  2000
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WANG Jin-jun, XUE Qi-zhi, BAI Tao, et al. Experimental Study on the Flow Patterns of a Simplified Aircraft Model at High Angles of Attack[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(2): 171-173. (in Chinese)
Citation: WANG Jin-jun, XUE Qi-zhi, BAI Tao, et al. Experimental Study on the Flow Patterns of a Simplified Aircraft Model at High Angles of Attack[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(2): 171-173. (in Chinese)

Experimental Study on the Flow Patterns of a Simplified Aircraft Model at High Angles of Attack

  • Received Date: 02 Sep 1998
  • Publish Date: 29 Feb 2000
  • The dye-injection flow visualization technique has been used to study the changes of flow patterns for a simplified aircraft model with the variation of angles of attack and the incoming flow velocity in a water tunnel. In this experiment, the changes of flow patterns do not have essential difference at several incoming flow velocities, but the variation of the relevant angles of attack occurs indeed, which means that there exists the Re-dependence. Moreover, for the scatter of the experimental pitch-up moment curve in the case of natural transition, the explanation has been made. α=35° corresponds the start of asymmetric breakdown of the strake vortex and α=70° is the critical point of the flow forth and back in the up wind side of the nose.

     

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  • [1] 梅尔兹科奇 W(德)著.流动显示[M].黄素逸,王志国,张浩然译.北京:科学出版社,1991. [2]王晋军雷诺数对三角翼绕流的影响[J].实验力学,1998,13(4):497~501 [3]Malcolm G N,Nelson R C.Comparison of water and wind tunnel flow visualization results on a generic fighter configuration at high angle of attack .AIAA-87-2423,1987.
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