Volume 33 Issue 10
Oct.  2007
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Cao Deyi, Lee Chunhian. Optimal design of nozzle for hypersonic vehicle[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(10): 1162-1165. (in Chinese)
Citation: Cao Deyi, Lee Chunhian. Optimal design of nozzle for hypersonic vehicle[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(10): 1162-1165. (in Chinese)

Optimal design of nozzle for hypersonic vehicle

  • Received Date: 13 Oct 2006
  • Publish Date: 31 Oct 2007
  • An optimal design procedure was proposed by utilizing the method of characteristics in conjunction with a multi-island genetic algorithm. The reflection angle of the nozzle upper wall, the length of the lower wall, and the flap length and angle were chosen to be the design variables, and a parametric study with respect to these variables was performed. The numerical results demonstrate that the proposed procedure is highly efficient, and capable of providing sufficiently accurate data for nozzle optimal design. It is also found that all four parameters chosen as the design variables will substantially affects the aerodynamic performances of the nozzle, among them, the reflection angle of the nozzle upper wall and the flap have remarkable influence on lift and thrust respectively. Hence, the trade-off among these variables must be taken into account to achieve the optimum result.

     

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