旋转充液系统全飞行过程非线性动力学仿真  

Nonlinear dynamics simulation to the complete flight process of rotating liquid-filled system

作　　者：李磊[1] 任业军[1] 蔡斌[1] 王照林[1] 

机构地区：[1]清华大学工程力学系,北京100084

出　　处：《宇航学报》2002年第4期4-11,共8页Journal of Astronautics

基　　金：国家自然科学基金资助项目 ( 1970 2 0 2 2 )

摘　　要：本文考虑一类刚液耦合的旋转充液系统的飞行动力学问题 ,在依据力学变分原理给出基本方程 ,导出全飞行过程运动状态方程的基础上 ,建立了相应的仿真模型。可以通过对 Navier- Stokes方程求解和液体流动的惯性波振动特性 ,给出液体的反作用力矩。经过仿真实验 ,分析角运动的时间序列 。To the flight dynamic problems of a coupled rigid-liquid rotating liquid-filled system, based on the government equations obtained from the variational principles in mechanics, the complete flight motion state equations are introduced and its simulating models is established. The liquid moments acting to system can be obtained by the numerical solutions of Navier-Stokes equations and the liquid flow characteristic of inertial wave oscillation. Through the simulating experiments and the analysis of angle motion time series, the detailed analyzed conclusions about flight instability mechanism are presented.

关 键 词：旋转充液系统 全飞行过程 非线性动力学 仿真 惯性波 时间序列分析 

分 类 号：V412[航空宇航科学与技术—航空宇航推进理论与工程]