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研究了降落伞一物体系统的空间运动。假定降落伞和物体都有６个自由度，两者通过吊带连接起来。推导了物伞系统运动的非线性微分方程，运动方程中没有考虑伞绳和吊带的弹性。用所得数学模型分析了减速伞回收系统的动力特性，给出了仿真计算结果。
The space motion of a parachute system is studied. Assume that parachutes and objects have six degrees of freedom, both connected by straps. The nonlinear differential equations of motion of umbrella system are deduced. The equations of motion of the umbrella system are not considered in the equation of elasticity. The mathematical model was used to analyze the dynamic characteristics of the parachute recovery system and the simulation results were given.