电磁发射条件下导弹磁场屏蔽研究

Research on Magnetic Field Shielding of Missile under Electromagnetic Launching

作为一种新型的导弹发射方式,电磁发射技术以法拉第电磁感应定律为基础,产生电磁力推动导弹运动。导弹在发射过程中,会产生强的电磁场环境,使得周围电子设备无法正常工作。利用Maxwell软件,对电磁发射条件下的磁场环境进行仿真分析,并与添加屏蔽体后的环境进行对比,说明了屏蔽体对于磁场环境的屏蔽作用。针对实际应用时屏蔽体通常存在孔缝的情形,对具有不同形状孔缝的屏蔽体进行分析,研究其屏蔽效果的不同。这些将会指导导弹屏蔽体的结构设计问题。

As a new type of missile launching method, electromagnetic emission technology, based on Faraday’s electromagnetic induction law, generates electromagnetic force to promote missile motion. In the launching process, the missile produces strong electromagnetic environment, so that the surrounding electronic equipment cannot work properly. In this paper, the magnetic field environment under the conduction of electromagnetic emission is simulated by using Maxwell software, and compared with the environment after adding shielding body. The shielding effect of shielding body on magnetic field environment is explained. In addition, considering the fact that shields usually have holes in practical applications, this paper analyzes shielding materials with different shapes of holes and studies their shielding effectiveness. These have certain guiding significance for the structure design of missile shield.