末制导伞弹子弹药外弹道动力学模型

The Dynamics Model for the Tracjectory of Terminal-guidance Parachute-bomb

在一定假设的基础上,将飞行系统(子弹药与降落伞组成)看作为变质量的质点弹性系统,充分考虑了变质量、附加质量及其引起的作用力,给出了作用在伞衣上的横向气动工程计算方法。借鉴现代控制理论的结构化模型方法,建立了末制导伞弹子弹药自动坠落过程、拉直过程、充气过程及稳定下落过程的结构化模型,使计算机编程易于实现。运用该模型通过空投试验数据验证,表明此弹道模型是有效的。

Based on some hypotheses, the flight system （TGBOM） that includes a bomb and parachute is taken as a variable mass-point elastic system. The factors which consist of the variable mass, the added-mass and the acting force caused by the variable mass and added-mass are considered elaborately, gives out the engineering calculating method of transverse aerodynamic coefficient acting on the parachute. Using the constructional modeling method of modern control theory, the constructional modeling of free-falling process, parachute-pulling process, parachute-puffing and stable-falling are established, so programming is easy. Using the bombing measured data to verify the model, shows that the dynamics model is effective.