Numerical simulation of transient electromagnetic response of aircraft to lightning strikes

Chinese Journal of Ship Research - - News -

LI Qianhua1,CHEN Xi He'nan2,HU Zhijun1,PENG Yong1,LONG Zhongquan1,GUO Jun2 1 Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China 2 School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China With the rapid development of space technology, launching aircraft at sea has gradually become a future development trend. Aircraft flying in the atmosphere will sometimes encounter lightning strikes,which can cause damage to airborne equipment.[Methods]In response to this issue, two aircraft models(one with a gap and one with no gap)are built. Based on the CST transmission line matrix method,the induced electric and magnetic fields,surface current and induced current distribution of the cables of the two aircraft models are studied. At the same time,the changes in induced current in cables of different lengths are studied.[Results] For the same aircraft model,the surface electric and magnetic fields and internal electric and magnetic fields at the same axial position are not only different in induction peak value but also in change trend. The gap has little effect on the surface electric and magnetic fields of the aircraft,but the influence is particularly obvious inside the aircraft. The gap of the aircraft has a great influence on the induced current of the cable. Compared with the model with a gap,the single wire induced current peak of the model with no gap decreased by 1 000 times,and the current peak of the coaxial wire decreased by 15 times. The research results of this paper can provide references for understanding the electromagnetic effect of lightning strikes on aircraft and the results will be helpful for carrying out the next step in lightning protection work. induced electric and magnetic fields;surface current;electromagnetic coupling; cable

Abstract:[Objectives] words:aircraft; Key [Conclusions]

收稿日期:2017 12 26 网络出版时间:2018-4-11 8:31作者简介:李茜华,男,1984年生,硕士,工程师。研究方向:火箭电气系统总体设计,电磁兼容性。E-mail:49916419@qq.com陈曦,男,1984年生,博士,高级工程师。研究方向:电磁兼容性。E-mail:cxmicrowave@126.com刘贺楠(通信作者),男,1993年生,硕士生。研究方向:电磁兼容性。

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