Abstract: This article focuses on the principle of astroblaster and discusses the relationship between reboun- ding height and relative parameters in terms of separate collision modeling as well as spontaneous collision modeling with the support of theoretical calculation and numerical simulation Firstly, separate collision modeling is applied to analyze how the mass distribution affects the final velocity and rebounding height in the 2-ball, 3-ball and N-ball collision model. The conditions for maximum elevation are concluded for separate collision modeling. Secondly, spontaneous collision modeling is presented. This modeling involves the effect of elasticity on different objects. The change of acceleration of the objects in astroblaster is also mentioned. The conditions for maximum elevation are concluded for spontaneous collision modeling.

Key words: astroblasier, separate collision, spontaneous collision, rebounding height, IYPT