Modeling and Dynamics Analysis of Liquid��Filled Flexible Spacecraft
Jia Yinghong1, Xu Shijie2, Nie Runtu3*
1. Dept. of Astronautic Engineering and Mechanics, Harbin Institute of Technology;
2. School of Astronautics�� Beijing University of Aeronautics and Astronautics;
3. Tianjin Institute of Civil Aviation
This paper deals with the modeling problem of a spacecraft consisting of a liquid-filled rigid platform and some flexible appendages. The spacecraft is modeled by using the Kane's equations. Hybrid-coordinate and spring-mass equivalent model for liquid sloshing are adopted in the modeling. With two-class appendages, the multi-body open-chain dynamic model can be applied more universally. Simulation results on a sample of tracking and data relay satellite were given to show the validity of the proposed model.
�۳�ѫ, �ż���, �� ��. �������Ķ���ѧ����[J]. ����ѧ��, 1988, 9(11):558~564 Shao Chengxun, Zhang Jiazhong, Wang Fei. The dynamical equations of a multi-body chain[J]. Acta Aeronautica et Astronautica Sinica, 1988, 9(11):558~564(in Chinese)
�� ��, ���¡. ��Kane���������Ĵ��Ϳռ�վ��չ�������Զ��嶯��ѧģ��[J]. �ѧ��,1997, 18(4):79~83 Wnag Yi, Wu Delong. A flexible multi-body dynamical model for large deployable mechanisms of space station by Kane's method[J]. Journal of Astronautics, 1997, 18(4):79~83(in Chinese)