Efficiency and Practical Implementation of the Double Armature Linear Pulse Electromechanical Accelerator

Abstract

A mathematical model of a linear pulsed electromechanical accelerator with coil and massive electrically conductive armatures in the presence of a ferromagnetic shield has been developed and implemented in the Somsol Multiphysics software package. The electrical and mechanical characteristics of the accelerator are obtained when the inductor winding is excited from capacitive energy storage of vibration-damped, aperiodic and aperiodic with feeding by current forms. Using a complex efficiency criterion, which takes into account the amplitude of the current in the inductor winding, the maximum speed of the electrically conductive armature, the magnitude of the impulse of the total electrodynamic forces, the average level of the stray field and electrically conductive armature. On the basis of a two-armature accelerator with a ferromagnetic shield, a model of an electromagnetic catapult for a unmanned aerial vehicle was manufactured and tested. In the process of experimental research, the electrical, magnetic, mechanical and thermal parameters of the catapult were measured simultaneously. It was found that the maximum speed of a unmanned aerial vehicle based on an accelerator with a parallel connection of active elements is 60% higher than with their serial connection.