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�������պ����ѧѧ�� 2001, Vol. 27 Issue (3) :297-300    DOI:
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Effects of Rotor Downwash on Engine Jet
SU Yuan, WANG Ji-fei, CAO Yi-hua, CHEN Jiang-feng*
Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics

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Abstract�� An analytical method to predict the effects of rotor downwash on engine jet was proposed to investigate the flow pattern of helicopter engine jet. First, free wake analysis was carried out to calculate the rotor wake geometry and the downwash around the engine jet space. Then engine jet path, cross section shape and physical variants were calculated and analysed. Finally, an example was given to show that the method can be used to predict temperature distribution of a helicopter.
Keywords�� rotor aerodynamics   wakes   eugines   jet interference     
Received 2000-05-18;
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����, ������, ���廪, �½���.����ϴ���Է���������Ӱ��ļ������[J]  �������պ����ѧѧ��, 2001,V27(3): 297-300
SU Yuan, WANG Ji-fei, CAO Yi-hua, CHEN Jiang-feng.Effects of Rotor Downwash on Engine Jet[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2001,V27(3): 297-300
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