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Comparison of two design methods of aerodynamic biobjectives for airfoil and wing shapes

  • Zhu Ziqiang 
  • Fu Hongyan 
  • Liu Hang 
  • Wang Xiaolu 
Article
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Abstract

A simplified adaptive wing, which deflects its leading edge and trailing edge flaps to vary its shape, is calculated to investigate the potential aerodynamic gains and compared with a biobjective optimization (BO) wing in the present paper. In subsonic-transonic flights the deflection angle of a flap is determined through optimization using a deterministic method. In supersonic flight the flaps are not deflected due to the requirement of having a minimum drag. For comparison the aerodynamic characteristics of a BO airfoil and wing is calculated. A parallel genetic algorithm is used in BO. Euler equations served as governing equations in flow field calculation. Numerical results in both 2D (airfoil) and 3D (wing) cases show that aerodynamic performances of the two design airfoils and wings are much better than those of the original ones, with the adaptive design one the best.

Keywords

simplified adaptive wing biobjective optimization airfoil and wing design 

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Copyright information

© Science in China Press 2004

Authors and Affiliations

  • Zhu Ziqiang 
    • 1
  • Fu Hongyan 
    • 1
  • Liu Hang 
    • 1
  • Wang Xiaolu 
    • 1
  1. 1.Beijing University of Aeronautics and AstronauticsBeijingChina

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