用于飞行器隐身的闭式等离子体厚度选择分析  

Choice and analysis of the thickness of closed plasma used on stealth aircraft

作　　者：王瑞[1] 刘战合[1] 武哲[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《沈阳航空航天大学学报》2011年第3期1-5,共5页Journal of Shenyang Aerospace University

基　　金：国家重点基础研究发展计划(项目编号:61320)

摘　　要：为分析闭式等离子体用于飞行器隐身的可行性,引入了可观隐身效果的概念及对应的闭式等离子体厚度。采用WKB方法,详细研究了X波段下的闭式等离子体吸波效果,得到了对应频段下产生可观隐身效果需要的等离子体厚度;研究了不同电子密度分布的吸波特性,数值算例说明,对不同电子密度分布的等离子体,吸波效果与厚度均成线性关系,同时,采用理论推导验证了该现象的正确性。结果表明,对于给定的电磁波,采用一定厚度的闭式等离子体可以达到可观隐身效果。To analyze the feasibility of closed plasma used on the stealth aircraft,this paper presents a novel concept and corresponding closed plasma thickness.The absorption effect of closed plasma on X band is researched in detail by using WKB method,and the closed plasma thickness needed to produce the considerable stealth effect is obtained.This paper investigates absorbing characteristics of the different plasma electron density distributions,which is demonstrated to be a linear relationship between absorption effect and the plasma thickness by numerical computation examples.Meanwhile,theoretical analysis indicates that the phenomenon is correct.The results show that closed plasma with a certain thickness can achieve considerable stealth effect for some given wave.

关 键 词：飞行器隐身 闭式等离子体 可观隐身效果 

分 类 号：V218[航空宇航科学与技术—航空宇航推进理论与工程]