Aimed at the problem in the gun barrel life prediction, a method of gun barrel life prediction based on record of firing was pointed out. On the basis of internal trajectory resolving, the equivalent life transform coefficient for gun barrel based on the overall heat in origin of rifling and the overall gun pressure was computed. And by assuming we wore gun barrel life in canonical record of firing, a conversion model between the equivalent life transform coefficient for gun barrel and variety of record of firing which could be used to realize the gun barrel life prediction was built by using BP network.

No abstract

Auto-rotated precision of gun barrel is a key operation of firing, and the research of its testing method should depend on its index computing. According to discrete value in the firing table and the exterior ballistic computation based on least square polynomial fit method, the mapping function between battle sight and range dispersion was confirmed. And by analyzing the effect of offset induced by auto-rotated precision of gun barrel, the index function which could offer a data origination for the verification of testing method of auto-rotated precision of gun barrel was provided.