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�������պ����ѧѧ�� 2003, Vol. 29 Issue (3) :202-204    DOI:
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������1, ����ӭ2, �߸�2*
1. �������պ����ѧ �����������Ӧ����ѧϵ;
2. �������պ����ѧ ����ϵ
Experimental Investigation on Aerodynamic Performance��of Serrated Gurney Flap
Shen Xialing1, Wan Zhouying2, Gao Ge2*
1. Dept. of Flight Vehicle Design and Applied Mechanics, Beijing University of Aeronautics and Astronautics;
2. Dept. of Propulsion, Beijing University of Aeronautics and Astronautics

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Abstract�� Force and PIV local flow measurements were conducted in a low speed wind tunnel to study the effectiveness of serrated Gurney flap at different deflections. The results showed that the serrated Gurney flap could significantly increase the lift coefficients and the ratio of lift to drag of the airfoil with high lift coefficients. For a given serrated Gurney flap, there was an optimum deflection, At which, the lift-drag ratio of the airfoil can increased not only at high lift coefficient but also at the low to middle angle of attack. It was also found that near-stream wise vortices shed from the serrated edges can make the flow attach to the upper surface near the trailing edge and can delay flow separation.
Keywords�� high lift devices   trailing edge flaps   aerodynamic characteristics     
Received 2001-09-13;
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������, ����ӭ, �߸�.����θ�������������ܵ�ʵ���о�[J]  �������պ����ѧѧ��, 2003,V29(3): 202-204
Shen Xialing, Wan Zhouying, Gao Ge.Experimental Investigation on Aerodynamic Performance��of Serrated Gurney Flap[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2003,V29(3): 202-204
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