Simulation Research on Lightning Induction of Solid Rocket Cable Path
Solid rockets are likely to be struck by lightning when flying at low altitudes,causing damage to their internal electrical equipment.In order to study the electromagnetic environment around the solid rocket and the in-duced current on the internal cables under the lightning strike signal,a simulation model of the solid rocket was estab-lished and the induced current on the cable was simulated based on TLM time-domain solver in CST cable studio.The results show that the electromagnetic environment of the open end of the solid rocket is relatively harsh,the in-duced current of the coaxial core wire is smaller than that of the single wire,and a better shielding effect can be ob-tained by thickening the shielding layer or using double-layer shielding.The obtained results have important practical significance for clarifying the electromagnetic effect of the lightning electromagnetic pulse on the internal cables of the solid rocket and then carrying out its lightning protection work.