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�������պ����ѧѧ�� 2007, Vol. 33 Issue (03) :269-272    DOI:
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Optimization design of wing-s thickness and twist angle using Euler equations
Li Yan, Zhu Ziqiang, Wang Xiaolu, Chen Zemin*
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� With the goal of maximizing lift-to-drag ratio, the optimization of three-dimensional wing-s section thickness and twist angle is discussed. Euler equations as flow field sovler and Powell method are used as design tools, and the wing-s aspect shape and airfoil are fixed. The thicknesses of wing sections on the semi-wingspan relative position of 0.1, 0.2, 0.3, 0.8, 1.0, with the additional twist angle are chosen as the optimal control factors. The distribution of wing-s thickness and twist angle is obtained on the subsonic conditions with relative high lift-to-drag. The subcritical and supercritical computation of Lockheed-AFOSR wing B cases show that nonlinear distribution of thickness and negative twist angle could ameliorate the condition of flow field around the wing, which leads to higher lift-to-drag ratio, the optimization method is effective.
Keywords�� wing design   optimization design   Euler equations     
Received 2006-04-27;

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About author: �� ��(1980-),��,���ּ�����,˶ʿ��,liyan@ase.buaa.edu.cn.
����, ����ǿ, �����, ������.����Euler���̵���ά��������Ť���Ż����[J]  �������պ����ѧѧ��, 2007,V33(03): 269-272
Li Yan, Zhu Ziqiang, Wang Xiaolu, Chen Zemin.Optimization design of wing-s thickness and twist angle using Euler equations[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2007,V33(03): 269-272
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