【摘要】 研究了带弹性伸展附件充液航天器姿态动力学问题，利用动量矩定理、动量矩守恒定律、牛顿运动定律导出液体运动方程、系统运动方程、弹性板质量微元运动方程，在板等速伸展的情况下，对极质量微元运动方程进行变换，通过尤格－库塔积分法求出极振动的振幅，再由系统运动方程求出航天器姿态角速率．更多还原

【Abstract】 In this paper attitude dynamics of liquid-filled spacecraft with elastic appendagesis studied- Motional equations of liquid, motional equations of system and motionalequations of particle of elaJstic plates are obtained by using the theorem of angu-lar momentum, the conservation law of angular momentum and Newton’s motionallaw. When elastic plates deploy at uniform velocity of plates motional equationsof plates are alternated. Using Runge-Kutta method, the plate’s amplitudes ofvibration are obtained. Using motional equations of system,the attitude angularvelocities of spacecraft are obtained.更多还原