抛索火箭系统的绳索动力学问题十分复杂。采用有限段方法对绳索进行建模,分析推导了绳索的运动和受力,根据Kane方法选择了合适的广义坐标,建立了拖缆火箭飞行的动力学模型。利用该动力学模型分析了绳索对抛索火箭弹道特性的影响,得到了绳索线密度、空气阻力系数对射程、速度、弹道倾角等弹道特性影响规律,为下一步研究绳子对拖缆火箭飞行的扰动以及拖缆火箭制导控制提供了理论模型和指导。

Rope dynamics problem of line throwing rocket system is very complicated. Finite segment method was used to model the rope in this paper, movement and force acting on rope were analyzed, the appropriate generalized coordinates were selected, and dynamic modeling of the line throwing rocket was developed according to Kane's method. With the dynamic model, impact of the rope on ballistic characteristics of the line throwing rocket was analyzed, the law of ballistic characteristics of the line throwing rocket such as range, speed, angle of trajectory impacting by line density and coefficient of air resistance of the rope were obtained, which provides a theoretical model and guidance for further research on disturbance of rope of line throwing rocket and guidance and control of it.