Electromagnetic launch technology was one of the important developing direction of newconcept weapon. The projectile or armature could be accelerated to a high speed byinstantaneous released electricity. Integrated launch package (ILP) was seemed as the mainammunition anti-armor currently. ILP could be endowed with stronger ability by usingelectromagnetic launch. In recent years, how to reduce or avoid gouging, grooving andtransition in railgun barrel was the main research direction to increase lifetime of railgun.Most of these researches just discussed the effect between armature and rail. ILP as the finalammunition always contained three parts, armature, sabot and penetrator. Theelectromagnetic force mainly distributed on the armature. The movement of sabot andpenetrator were contributed by the push of the armature. Dynamic analysis of ILP in thebarrel was discussed in this paper to provide a reference to decrease damage in the barreland increase the accuracy long rod.
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