Study on the Effect and the Direction Accuracy of Active Electromagnetic Protection System

Abstract

Armor vehicles have traditionally been protected by the armor based on steel. This gives rise to extremely heavy structures which produce logistic problems due to the need to transport the vehicle to a battle field. Many kinds of technique have been developed to meet this change. A new concept-active electromagnetic protection system (AEMPS) has the advantage of short trigger delay time, good controllability, repetition uniformity and convenient logistic service. So it must be the development trend of the active protection system. At present, there is not much research on the effect of AEMPS. In order to better understand the effect of AEMPS, establishing a numerical model to simulate the interception process is required. In this paper, taking pole armor piercing projectile as example for it has heavy threat on armor, numerical simulation was performed with the finite element software LS-DYNA3D. The simulation shows good result. After being intercepted, pole armor piercing projectile's warhead turns blunt and inflected, its velocity slows down and the ability to penetrate the same armor decreases about 20-25 percent. Good practical effect of AEMPS is based on intercepting target successfully. Since pole armor piercing projectile has high velocity, it requires that AEMPS has high accuracy of interception. In order to evaluate the launching direction accuracy, a new launching apparatus was made and the accuracy test was carried out in the laboratory. The experimental result showed that the direction accuracy of launched interceptor is less than 0.5 degree. So it can intercept target successfully in the range of five meters.