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�������պ����ѧѧ�� 2011, Vol. 37 Issue (8) :927-932    DOI:
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�������պ����ѧ ���տ�ѧ�빤��ѧԺ, ���� 100191
Flutter analysis for rudder considering actuator’s dynamics
Zhang Xintan, Wu Zhigang, Yang Chao*
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� Missile rudder-s flutter characteristics are influenced by the actuator-s impedance. Two new methods which can analyze the rudder-s flutter stabilities were used respectively in time domain and frequency domain. Stability judgement of the state matrix was required in the time domain method. Actuator-s impedance characteristics had to be included by the flutter equation which can only be solved by the improved k method when the frequency domain method was used. The two methods- validity was checked by numerical calculation of a rudder model with an actuator. Traditional way of predicting flutter boundary was also used to analyze the rudder, and the flutter velocity/frequency were different from the new methods- results. It indicates that considering actuator-s dynamic characteristics while doing a rudder-s flutter analysis is very important.
Keywords�� flutter   rudder   actuator   impedance     
Received 2010-04-19;
About author: ���˜W(1984-),��,����������,��ʿ��,xintanzhang@yahoo.com.cn.
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���˜W, ��־��, �.���Ƕ������ѧ�Ķ�ϵͳ�������Է���[J]  �������պ����ѧѧ��, 2011,V37(8): 927-932
Zhang Xintan, Wu Zhigang, Yang Chao.Flutter analysis for rudder considering actuator’s dynamics[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(8): 927-932
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