Based on the simplifications of muzzle flow field,this paper studies the starting condition and parting movement between the sabot and the rod of a gas-propelled APDS duing the discarding process.

• 在对膛口流场进行简化的基础上，研究了气推式脱壳弹脱壳过程中弹托与弹芯的起动条件和分离运动。