The results show that the fracture of ammonium perchlorate is essential to the growth of fracture and spalls behave in a brittle crack mode for a composite propellant.

• 结果表明，复合推进剂在动态压缩条件下主要表现为固体颗粒高氯酸铵的破碎，即首先在固体颗粒中产生微裂纹，在动加载下呈脆性断裂性质；