充液系统动力学与航天高技术问题

充液航天器内部液体晃动及其对控制系统的影响,是当前国内外航天高技术研究的重要课题,也是一个比较复杂的问题。本文首先由力学变分原理导出了充液系统的状态方程,其次分析了充液系统的稳定性;特别是,研究了在失重或微重条件下,充液航天器内部液体晃动的动力学特性以及部分充液三轴稳定性问题等。本文的研究结果,对于航天、航空、航海中的充液系统动力学与控制问题,都有重要的参考价值。 

DYNAMICS OF SYSTEMS FILLED WITH LIQUID AND SOME PROBLEMS FOR SPACE SCIENCE TECHNOLOGY

The problem for fuel sloshing in the space vehicles and its influence on the control systems are important and complex in the space science technology. In this paper the differential equations of systems filled with liquid are firstly derived from the variational principle of mechanics, and then the stability of liquid-filled systems is analyzed. The dynamic behavior of liquid sloshing in the liquid-filled space vehicles and the three-axis stability of a system partially filled with liquid are investigated under the zero-gravity or the low-gravity conditions. The results of this paper are useful for the dynamics and the control of liquid-filled systems in the astronautics and aeronautics and ocean engineering.