本文提出了弹道式飞行器自由飞行轨道的解析解法。
In this paper an analytic solution of free flight trajectory of ballistic vehicle is presented.
弹道式飞行器再入时，常常要求在规定高度上发出开伞信号，过载延时控制方法误差太大，不能满足精度要求。
The opening parachute signal is required to sent on the fixed height when the vehicle reentry. The height controlled error through axis apparent acceleration can not meet the required precision.
弹道式飞行器再入时，常常要求在规定高度上发出开伞信号，过载延时控制方法误差太大，不能满足精度要求。
The opening parachute signal is required to sent on the fixed height when the vehicle reentry. The height controlled error through axis apparent acceleration can not meet the required precision.
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