调姿发动机点火线缆高空超宽域电磁脉冲耦合效应仿真研究  

Simulation study on coupling effect of ignition cable for attitude-adjusting rocket engine against high-altitude ultra-wide range electromagnetic pulse

作　　者：张东 郎丽慧 刘冬 王亚东 刘一哲 ZHANG Dong;LANG Lihui;LIU Dong;WANG Yadong;LIU Yizhe(Xi’an Changfeng Electromechanical Research Institute,Xi’an,710065,China)

机构地区：[1]西安长峰机电研究所,西安710700

出　　处：《兵器装备工程学报》2024年第S2期198-203,共6页Journal of Ordnance Equipment Engineering

摘　　要：针对调姿发动机点火线缆在超宽域电磁脉冲下的单元推力装置工作失效、误点火、瞬间燃爆等问题,开展点火线缆高空超宽域电磁脉冲耦合效应仿真研究。通过构建调姿发动机线缆超宽域电磁仿真模型,利用Agrawal传输线模型建立线缆耦合微分方程组,计算高空超宽域电磁脉冲下点火线缆耦合电流;通过平面波激励,对Agrawal传输线模型进行仿真。实验结果表明:屏蔽层可有效减小附近点火线缆的感应电动势,减小耦合电流;点火线缆的长度与负载端耦合电流的大小呈正相关;点火线缆半径增大,则特性阻抗减小,耦合电流峰值增大;极化角为0°与180°时,电流分别达到正、负最大值。Aiming at the problems of failure,false ignition and instantaneous explosionfor the unit thrust device of the attitude-adjusting rocket engineignition cable under high-altitude ultra-wide range electromagnetic pulse,the simulation study of the coupling effect for high-altitude ultra-wide range electromagnetic pulse of the ignition cable is carried out.Build a electromagnetic simulation model for attitude-adjusting rocket engine cable under high-altitude ultra-wide range electromagnetic,use the Agrawal transmission line model,establish a differential equation system for the cable coupling problem,and calculate the coupling current of attitude-adjustingrocket engine cable under high-altitude ultra-wide range electromagnetic pulse.Simulate the Agrawal transmission line model through plane wave excitation.The experimental results show as such:The shielding layer reduces the induced electromotive force on nearby cables effectively,therefore,the coupling current is relatively reduced;The length of the cable is positively correlated with the coupling current at the load end;As the radius of the cable increases,the characteristic impedance decreases,leading to an increase in the peak coupling current of high-altitude electromagnetic pulses;When the polarization angles are 0°and 180°,the current reaches its maximum positive and negative values respectively.

关 键 词：调姿发动机 点火线缆 高空超宽域电磁脉冲 耦合效应 仿真 

分 类 号：TJ45[兵器科学与技术—火炮、自动武器与弹药工程] TM15[电气工程—电工理论与新技术]