The Research of Optimal Aerodynamic Layout for Aircraft Wing

In this paper, the detailed analysis and calculation for original wing of an aircraft are presented, and the design scheme is determined. The effect of the aerodynamic characteristics with sweep back angle is discussed, and a new planeform of the wing which can decrease sweep back angle is determined. The aerodynamic design of the wing is optimized by FCD program. In accordance with the different design idea, many optimized wings are obtained, including wing section, camber and torsion design. Finally, the optimal design results are compared with original wing. The calculating results show that the optimal design results of Q5-M2T and Q5-N2T wings are perfect, and the flight performance can be improved when the aircraft has many external stores. The optimal wing improves aerodynamic characteristics and the lift-drag rate of wing increases 20% - 30% .