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飞行器雷电防护的重要性不言而喻,了解其内部雷电电磁环境的分布规律有利于机舱内电子设备及线缆的合理布局。考虑直击雷引起的飞行器内部电磁环境分布情况,采用三维几何建模软件SolidWorks建立简化的机舱模型,将其导入FEKO电磁场仿真软件中。采用矩量法(MoM)对整个电磁模型进行扫频求解,将得到的频域结果在POSTFEKO模块中进行傅里叶逆变换(IFFT)得到时域结果,然后对其进行分析和讨论。结果表明,采用FEKO仿真的飞行器内部雷电电磁环境可以为飞行器防雷工程提供合理参考。
The importance of aircraft lightning protection It goes without saying that knowing the distribution of the electromagnetic environment inside the lightning is conducive to the rational layout of electronic equipment and cables in the cabin. Considering the distribution of the electromagnetic environment inside the aircraft caused by the direct lightning strike, a simplified model of the cabin was built with SolidWorks, a 3D geometric modeling software, and imported into FEKO electromagnetic field simulation software. The whole electromagnetic model was swept by MoM method. The obtained frequency domain results were inverse Fourier Transform (IFFT) in the POSTFEKO module to obtain the time-domain results, and then analyzed and discussed. The results show that the lightning electromagnetic environment of the aircraft using FEKO simulation can provide a reasonable reference for lightning protection engineering of aircraft.