关键词: 安全判定准则, 回追碰撞不等式, 多体分离, 前向抛罩, 安全边界

Abstract: The purpose of the research on safety boundary of multi-body separation is to find suitable safety design criterion or system analysis method, and to provide reference for relevant professional design, so as to provide optimization basis and solution for safety separation design. In this paper, the safety boundary of high Mach number forward separation of protective shield is studied, and the criterion of safety boundary of typical forward separation between protective shield and projectile and the inequality of back-pursuing collision of protective shield are put forward. The judge criterion of safety boundary can be used to research on the safety of shields during the axial direction separation stage. It can also provide a basis for the design of separation schemes and the selection of engine types. The back-pursuing collision inequality establishes the relationship between the motion parameters at the initial moment of free motion and the motion acceleration of the protective shield, which provides a reference for predicting the later motion of the protective shield. According to the initial state, the safety of the separation process of the protective cover can be judged by using the safety boundary criterion and the back-pursuing collision inequality, which provides reference for the separation design related majors.

Key words: safe separation criteria, back-pursuing collision inequality, multi-body separation, shield separation, safety boundary