According to the data analysis of erosion and damage of a cannon barrel,the paper locates the characteristic planes of erosion and abrasion,and then uses several characteristic planes to describe the change of interior ballistics.

• 通过对某加农炮的身管烧蚀磨损特征数据进行分析整理,确定了身管烧蚀磨损特征面,采用了多特征面来表述火炮内弹道性能变化。