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Analysis of non-linear stability of guided projectile using lateral impulsive thrust
Yang Hongwei1, Dou Lihua1, Gan Minggan2*
1. School of Automation, Beijing Institute of Technology, Beijing 100081, China;
2. Beijing Key Laboratory of Automatic Control System, Beijing 100081, China

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Abstract�� The analysis of non-linear stability of guided projectile under the condition of high attack angle after lateral impulse was presented. Integral was applied to describe the equations of projectile motions, and consequently, the polynomial for cosine variation of the attack angle was obtained. By analyzing the polynomial, the issue of stability of the projectile angular motion was turned to be the one of calculating the negative roots of the polynomial.The sufficient condition for non-linear stability of the projectile motion was also presented according to the Hurwitz criterion. The result provides certain theoretical basis for both academic and practical fields for issues about predicting the flying state of a projectile under non-linear motion condition, and for those on designing impulsive executive mechanism.
Keywords�� impulsive thrust   guided projectile   non-linear stability     
Received 2010-07-08;


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���ΰ, �����, ������.�߲����������Ƶ��ڵ��ķ������ȶ��Է���[J]  �������պ����ѧѧ��, 2011,V37(7): 772-776
Yang Hongwei, Dou Lihua, Gan Minggan.Analysis of non-linear stability of guided projectile using lateral impulsive thrust[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(7): 772-776
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