Research And Analytical Calculation Of The Railgun Inductance Gradient

With the progress of science and technology, the electromagnetic railgun is a newconcept weapon, its technology has rapid development in the field of militaryresearch,moreove in aviation, aerospace, transportation, industrial production, scientificresearch and other fields. The developed countries take seriously and study deeply fromthe strategic height.Inductance gradient is one of the important parameters influencing theelectromagnetic gun, and has important influence on the efficiency of the electromagneticgun and for the launch of the projectile velocity, the paper mainly studies the effect oftrack geometry parameters on the inductance gradient, it is finally validated byexperimental data, the conclusions are drew as:First, this paper introduces the working principle, the important parameters and thebasic structure of the railgun on the basics, the armature movement model of the railgunis established.Secondly, based on considering current skin effect during launching and the railgunarmature motion model, a mathematical model is established by the force of therectangle-shaped rail armature. The theoretical analytic expression of inductance gradientis derived for the T-shaped railgun. The effects of structure geometrical parameters oninductance gradient are investigated by numerical simulations through to the trackinspection of different geometric parameters.Finally, based on the above conclusions, as well as improve the railgun inductancegradient value considering projectiles shooting, the track geometry parametersoptimization design, and thus improve the speed of the projectile and shooting, theapplication of rail guns in various aspects especially in military application has importantsignificance.