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Volume 44 Issue 10
Oct.  2018
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Journal of Beijing University of Aeronautics and Astronautics  > 2018  >  44(10): 2134-2140.
QI Zhongyang, WANG Yankui, CAO Penget al. Zonal behavior of angle of attack effects on vortices over blunt-slender body[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(10): 2134-2140. doi: 10.13700/j.bh.1001-5965.2018.0798(in Chinese)
Citation: QI Zhongyang, WANG Yankui, CAO Penget al. Zonal behavior of angle of attack effects on vortices over blunt-slender body[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(10): 2134-2140. doi: 10.13700/j.bh.1001-5965.2018.0798(in Chinese)
shu

Zonal behavior of angle of attack effects on vortices over blunt-slender body

doi: 10.13700/j.bh.1001-5965.2018.0798
  • 1.

    State Key Laboratory of Aerodynamics, Mianyang 621000, China

  • 2.

    School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083

  • 3.

    Shanghai Institute of Spaceflight Control Technology, Shanghai 200233, China

Funds:

National Natural Science Foundation of China 11472028

National Natural Science Foundation of China 11721202

the Open Fund from State Key Laboratory of Aerodynamics SKLA20160101

Aeronautical Science Foundation of China 2016ZA51

More Information
  • Corresponding author: WANG Yankui, E-mail:wangyankui@buaa.edu.cn
  • Received Date: 25 Dec 2017
  • Accepted Date: 23 Mar 2018
  • Publish Date: 20 Oct 2018
    Abstract

  • In order to achieve the high maneuverability of the air-to-air missile, the flow characteristics of vortices over the blunt-slender body at different angles of attack were studied by wind tunnel forces and pressure test in this paper. The Reynolds number is set as ReD=1.54×105, based on oncoming free-stream velocity and the diameter of the blunt-slender body (D). The flow structures over the blunt-slender body were determined at different angles of attack according to the analysis of side forces, sectional pressure distribution and the variation histories of the sectional side force with time. Four regions about the angles of attack are divided, i.e., attached-flow region (α ≤ 10°), symmetric-flow region (10° < α ≤ 20°), steady asymmetric-flow region (20° < α ≤ 50°) and unsteady asymmetric-flow region (α>50°). The flow characteristics of vortices over the blunt-slender body at different angles of attack were discussed in detail.

     

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