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�������պ����ѧѧ�� 2010, Vol. 36 Issue (2) :198-201    DOI:
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�ھ���, ������, �� ��*
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Investigation of aerodynamic characteristics on saucer-shaped lifting-body
Yu Junli, Wang Linlin, Gao Ge*
National Key Laboratory on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� Saucer-shaped aircraft is a new type aircraft configuration with blended fuselage and wing. Through the method of changing centre of gravity, flight stability was acquired and validated in the flight test. A type of fin-shaped wing-tip winglet applied to this aircraft to reduce induced drag was presented. Compared to the original type without winglet, the lift to drag ratio of new model can be improved by 70% at the speed of 30��m/s in wind tunnel. The results of tunnel experiments were verified successful in test flights. Not only its load was increased but also its aerodynamic performance was good. In order to realize its aerodynamical characteristics, computational investigation was performed to the flow field. By analyzing the results, wingtip vortex had important influence to its performance.
Keywords�� wings   fuselages   drag coefficient   drag reduction     
Received 2009-01-09;
About author: �ھ���(1979-),��,�����,��ʿ��,YJL@sjp.buaa.edu.cn.
�ھ���, ������, �� ��.�����������������������[J]  �������պ����ѧѧ��, 2010,V36(2): 198-201
Yu Junli, Wang Linlin, Gao Ge.Investigation of aerodynamic characteristics on saucer-shaped lifting-body[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(2): 198-201
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2010/V36/I2/198
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