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本文研究了绳系释放对于航天器刚体姿态的影响.基于离散的系绳黏弹性模型,建立了航天器和系绳间刚-柔耦合的时变非线性动力学模型.以Kissel释放控制律为例,研究了系绳自由释放及受控释放时航天器姿态动力学问题,揭示了绳系释放对于航天器本体姿态的影响规律.结果表明,系绳自由释放末的冲击可致航天器旋转,而受控系绳释放使航天器产生绕其局部平衡位置的振荡.航天器初始姿态对绳系航天器的释放动力学具有显著影响.
In this paper, the influence of tether release on rigid body attitude of spacecraft is studied.Based on the discrete tether viscoelastic model, a time-dependent nonlinear dynamic model of rigid-flexible coupling between spacecraft and tether is established. The Kissel release control law is In this paper, the attitude dynamics of the spacecraft during free-release and controlled release of the tether are studied, and the influence of the release of the tether on attitude of the spacecraft body is revealed.The results show that the impact of the free-end release of the tether can cause the spacecraft to rotate, The release of controlled tethers causes the spacecraft to oscillate around its local equilibrium position.The initial attitude of the spacecraft has a significant effect on the release kinetics of the tethered spacecraft.