栅格式排气孔雷电电磁效应机理分析  

Analysis of Lightning Electromagnetic Effect of Grid-Fin Vent

作　　者：仵杰[1] 潘昱宏 罗洋 段雁超 杨琼 WU Jie;PAN Yu-hong;LUO Yang;DUAN Yan-chao;YANG Qiong(Key Laboratory of Photoelectric Logging and Detecting of Oil and Gas,Ministry of Eduction,Xi'an Shiyou University Xi'an 710065,China;Shanghai Chint Intelligent Technology Co.,Ltd,Shanghai 201614,China;Zhaoyuan Technology(Xi'an)Co.,Ltd,Xi'an 710077,China)

机构地区：[1]西安石油大学光电油气测井与检测教育部重点实验室,西安710065 [2]上海正泰智能科技有限公司,上海201614 [3]昭远科技(西安)有限责任公司,西安710077

出　　处：《微波学报》2022年第3期76-82,共7页Journal of Microwaves

基　　金：国家重大科研仪器研制项目(11927801);西安石油大学研究生创新与实践能力培养计划(YCS20213171)。

摘　　要：飞行器上存在不可避免的孔缝,使得飞机遭受雷击后电磁场从孔缝处透射。文章研究了飞机上真实孔缝结构——栅格式排气孔对飞行器内部电磁场的影响,选择传输线矩阵时域求解器分析了不同雷电流波形(A和H)下排气孔以及排气孔周围蒙皮材料变化时的电磁场分布情况。结果表明:沿孔缝表面垂直向内会有一定的电磁场透射,向内超过200 mm以后,电磁场透射强度低于外部电磁场的1.5%,因此其影响范围主要在200 mm以内;蒙皮材料不同时,距排气孔较近的地方,内部电磁场差异较小,距排气孔较远的地方,内部的电磁场差异较大。The presence of unavoidable holes and slits in the aircraft allows electromagnetic fields to be transmitted through the holes and slits after the aircraft is struck by lightning.In this paper,the effect of realistic grid-fin vent on aircraft on the electromagnetic fields inside the aircraft is studied,the transmission line matrix time domain solver is chosen with the aim of analyzing the electromagnetic field distribution for different lightning current waveforms(A and H)when the vent and the skin material around the vent are varied.The results show that there will be some electromagnetic field transmission along the surface of the hole slit vertically inward,and the electromagnetic field transmission intensity is less than 1.5%of the external field strength after more than 200 mm inward,so its influence range is mainly within 200 mm;when the skin material is different,the difference of internal electromagnetic field is smaller when it is closer to the vent,the difference of internal electromagnetic field is larger when it is farther from the vent.

关 键 词：雷电电磁效应 屏蔽效果 栅格式排气孔 电磁场 

分 类 号：V214[航空宇航科学与技术—航空宇航推进理论与工程] V328