一、初始条件的考虑本文对降落伞回收系统的用途规定为:“降低截击后导弹的速度到某个满意的值,以便能将导弹回收并重新使用”。对导弹的回收系统提出要求之前,必须确定用于导弹训练和试验与鉴定的两类发射使用的状态范围。在这种状态范围之内,对于训练和试验与鉴定二者即可制定满意的方 I. CONSIDERATIONS FOR INITIAL CONDITIONS The purpose of this article for parachute recovery systems is to “Reduce the missile speed after a strike to a satisfactory value so that the missile can be recovered and reused.” Before calling for a system of missile recovery, the range of states for the two types of launch used for missile training and testing and identification must be identified. Within this state of scope, a satisfactory formula can be drawn for both training and testing and identification