带多个充液贮箱航天器的自旋稳定性

摘要

本文研究带多个充液贮箱航天器的自旋稳定性问题,考虑了刚体相对于系统质心的平动、姿态、液体晃动三者的相互耦合作用, 通过建立离散系统的动力学方程, 导出了系统的自旋稳定性判据.%The spinning stability of a spacecraft with multiple on-axis-containers partially filled with inviscid, incompressible liquids is investigated in this paper. The coupled effect among translation, nutation of the rigid spacecraft and slosh of the liquids is considered. Employing Galerkin′s method the dynamic system is discretized and thus the dynamic equation is established in ODE form.Using Kelvin′s theorem, the stability criterion is finally obtained.