Penetration and ignition of new magnetoelectric self-powered small-caliber multi-effect penetrator obliquely impacting aluminum target

At present, there are few reports on the application of self-powered ignition system composed of magnet, coil and electric ignition head in small-caliber multi-function ammunition. In this paper, a new type of small-caliber multi-effect penetrator with structure-charge-self-powered integrated ignition is proposed to achieve efficient penetration and internal arson damage for low-small-slow and thin-walled unmanned objects. The high overload generated by the penetration of the penetrator into the target causes the magnet to move at high speed near the coil and induces the induced current to supply the ignition system and then ignite the Al/PTFE active material inside the projectile. In this paper, the force analysis of multi-effect penetrator penetrating thin aluminum plate under different impact velocities and angles (the angle between the normal direction of the target and target plane) is carried out. The numerical simulation of multi-effect penetrator penetrating thin aluminum plate under different impact velocities and angles is performed by ABAQUS/ Explicit software. The influence of gravity on the ignition reliability of self-powered ignition system, impact angle and impact velocity on the penetrating process is analyzed. The results show that the force of the penetrator is uneven in the initial stage of penetration, and the penetrating rate increases fastest in the initial stage of penetration. As the velocity of the penetrator increases, the penetration depth increases, the overload value increases, and the trajectory deflection angle also increases. With the increase in the impact angle, the penetration depth decreases, the overload decreases, and the ballistic deflection angle increases. During the process of oblique penetration, the penetrating angle of the penetrator has a great influence on the movement of the magnet, and a new small-caliber multifunctional penetrator prepared in this work can be used as an anti-UAV equipment to achieve efficient penetration and internal arson damage to the UAV.