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�������պ����ѧѧ�� 2004, Vol. 30 Issue (01) :74-78    DOI:
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����, ������, ���廪*
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Application of qualitative error analysis method in the mechanical navigation system
Chen Ming, Hu Jizhong, Cao Yihua*
School of Aeronautics Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� The rigid-wake mode of co-axial rotor in forward flight was set up based on analysis of infinite blade rigid-wake mode. The method of aerodynamic characteristics of co-axial rotor in forward flight was studied by given rotor geometry, distance between upper and lower rotor, advance ratio. The example of the method indicates that the theoretical and experimental results are consistent well.
Keywords�� helicopter   aerodynamic interference   coaxial rotor   rotary wing aerodynamics   circulation     
Received 2002-09-09;
About author: �� ��(1958-),��,������,������, chenming@buaa.edu.cn.
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����, ������, ���廪.����˫����ǰ���������Թ̶�β������[J]  �������պ����ѧѧ��, 2004,V30(01): 74-78
Chen Ming, Hu Jizhong, Cao Yihua.Application of qualitative error analysis method in the mechanical navigation system[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(01): 74-78
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