摘要
捆绑火箭较非捆绑火箭的动力学特征有很大的不同,而以往对捆绑火箭的动力学特征缺少足够的认识,火箭的POGO设计和姿控稳定设计对全箭模态的考虑仍沿用单维的思路。对捆绑火箭全箭动力学特性进行了研究。针对一个典型的捆绑火箭,采用试验和计算相结合的技术途径,得到了捆绑火箭的动特性。通过对捆绑火箭的模态分布特点进行总结,给出了捆绑火箭横、纵、扭模态相互耦合的特征。提出了捆绑火箭姿控稳定设计和POGO设计必须基于三维模态的思想。
The dynamic characteristics of the strap-on launch vehicle is quite different from the one of no strap-on launch vehicle. But the dynamic characteristics of the strap-on launch vehicle was lack to understand, and the traditional method based on one-dimension mode was still used for the POGO depression design and the attitude stabilization system design of the strap-on launch vehicle. The dynamic characteristics of the strap-on launch vehicle is researched in this paper. The combination of the modal measurement method and the analytical method resolve the dynamic characteristics of the strap-on launch vehicle is discussed in this paper by use of a typical the strap-on launch vehicle. The distribution of the strap-on launch vehicle is summarized and the properties of couple mode with horizontal mode, longitudinal mode and torsional mode are given. The method based on the 3-dimention mode for the POGO depression design and the attitude stabilization system design of the strap-on launch vehicle was pointed.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2009年第3期821-826,共6页
Journal of Astronautics
