Based on the development history of the Modular Propelling charge System, uni-modular and bi-modular charges were compared. Problems and the solution of uni-modular charge were pointed out. Finally bi-modular propelling charge was suggested to be the first choice for the 155 mm howitzer in china.%根据国内外刚性组合装药研制、装备使用的历程,对“全等式”与“不等式”两种结构形式进行了比较,对“全等式”结构存在的矛盾及解决途径进行了讨论。最后,建议将不等式双模块系统做为国内155mm火炮用刚性组合装药的首选方案。
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