An optimization method for passive muzzle arc control devices in augmented railguns

作     者：Bo Tang Qing-hua Lin Bao-ming Li Bo Tang;Qing-hua Lin;Bao-ming Li

作者机构：National Key Laboratory of Transient PhysicsNanjing University of Science and TechnologyNanjing210094JiangsuChina China Academy of Ordnance100089BeijingChina 

出 版 物：《Defence Technology（防务技术）》 (Defence Technology)

年 卷 期：2022年第18卷第2期

页      面：271-279页

核心收录：

学科分类：08[工学] 082601[工学-武器系统与运用工程] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 0826[工学-兵器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0703[理学-化学] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：acknowledge the Fundamental Research Funds for the Central Universities(Grants No 309190112102) the Natural Science Foundation of Jiangsu Province(Grants No BK20200493). 

主　　题：Augmented railguns Arc suppression Muzzle device Optimization method Shunts 

摘      要：In this paper,a passive muzzle arc control device(PMACD)of the augmented railguns is studied.By discussing its performance at different numbers of extra rails,a parameter optimization model is proposed.Through the calculation model,it is found that the PMACD works well in the simple railgun,which refers to the gun that there is only one pair of rails in the inner bore.The PMACD may decrease the simple railgun’s armature peak current and muzzle arc,but affect its muzzle velocity not much.However,in the augmented railguns it has different characteristics.If the parameters of the PMACD are not selected suitable.It may increase the armature peak current and muzzle arc,but greatly decrease the velocity.The reason for this problem is that the extra rails generate a strong magnetic field in front of the armature,which induces a large current to change the armature current.It is also found that when the resistance and inductance parameters of the PMACD satisfy with the optimization formula,the PMACD can also play a good role in arc suppression in the augmented railguns.Experiments of an augmented railgun with a stainless steel PMACD are carried out to verify this optimization method.Results show that the muzzle arc is obviously controlled.This work may provide a reference for the design of the muzzle arc control device.