飞行器雷击附着点数值仿真研究

Research on Lightning Attachment Points Simulation for Aircraft

雷击直接威胁飞行器的飞行安全,基于深入研究雷电电磁脉冲(LEMP)对飞行器的雷击特性,提高飞行器雷电防护性能的目的。文章应用一种静电场分析的方法,利用CST电磁仿真软件的EM工作室对某飞行器的等比例模型进行了雷击附着点的仿真研究,并详细讨论了放电间隙尺寸、雷击方位等相关参数的选择对飞行器闪电分区的影响,通过数值仿真的结果完成了对飞行器的闪电分区并与SAE-ARP5416标准分区进行对比,证明该方法是可行的,结论对该飞行器的雷电防护设计有重要的参考价值。

The lightning is threatening to the safety of flying aircrafts. Based on the purpose of doing research on LEMP characteristic for aircrafts deeply, improving the capability of aircraft LEMP protection. This paper apply a method of electrostatic analysis, doing simulation research on lightning attachment point for a isometrical model of aircraft by the EM studio of CST electromagnetism simulation software. The factors that influence lightning subarea results such as the gap spac- ing, discharging polar have been discussed detail, and accomplish lightning subarea through the numerical simulation result and make comparison to the SAE-ARP5416 standard of lightning subarea, proving this method is viable, so the result have a important reference value for this aircraft lightning protection design.