Effect of Armature and Rails Resistivity Profile on Rail’s Electromagnetic Force and Armature Velocity


The electromagnetic force on rails is one of the most vital factors that restrict the development of railgun performance by deforming, damaging, and reducing its life span. This force is generated by this flowing through the rail and a magnetic field that is established in the house between the rails that acts as an outward mutually repulsive load. For decreasing the electromagnetic force on rails, we have a tendency to have some choices, like changing the geometry and dimension of the armature and rails or changing the stimulated current. This paper has two components. In the first part, we have a tendency to outlined graded laminated armature, in that the electrical resistivity of each lamination is constant however completely different from that of other laminations in the entire armature. In the second part, laminated rails with numerous electrical resistivities and homogenous rectangular cube armatures are thought of. The purpose of the calculation is to seek out a appropriate assembly of conductors to form a laminated armature and rails to decrease the electromagnetic force on rails and obtain an acceptable performance for railgun. It's shown that we will decrease the utmost electromagnetic force on rails with rail’s resistivity modification and investigate an appropriate resistivity profile to increase armature muzzle velocity. The results are significant for the look and optimization of the railgun.

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