基于左手材料的翼面隐身结构设计及优化

doi:10.7527/S1000-6893.2014.0176

固体力学与飞行器总体设计

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基于左手材料的翼面隐身结构设计及优化

徐含乐¹, 祝小平¹, 周洲¹, 任武²

1. 西北工业大学无人机特种技术重点实验室, 陕西西安 710072;
2. 西安航天动力研究所, 陕西西安 710100

收稿日期:2014-06-24 修回日期:2014-08-05 出版日期:2014-12-25 发布日期:2014-09-05
通讯作者: 祝小平男, 博士, 教授, 博士生导师.主要研究方向: 无人机总体设计与应用. Tel: 029-88451030 E-mail: zhuxping@pub.xaonline.sn.cn E-mail:zhuxping@pub.xaoline.sn.cn
作者简介:徐含乐女, 博士研究生.主要研究方向: 飞行器隐身设计. E-mail: xhl-wolf0116@163.com;周洲女, 博士, 教授, 博士生导师.主要研究方向: 飞行器设计与应用. E-mail: zhouzhou@nwpu.edu.cn
基金资助:
部级项目

Design and Optimization of Low Detectable Wing Structure Based on LHM

XU Hanle¹, ZHU Xiaoping¹, ZHOU Zhou¹, REN Wu²

1. Key Laboratory of Science and Technology on UAV, Northwestern Polytechnical University, Xi'an 710072, China;
2. Xi'an Aerospace Propulsion Institute, Xi'an 710100, China

Received:2014-06-24 Revised:2014-08-05 Online:2014-12-25 Published:2014-09-05
Supported by:
The Ministry Level Project

摘要/Abstract

摘要：

翼面隐身结构能同时满足飞行器机翼气动、结构和隐身的要求,但在空间有限的机翼中应用时,由于结构特点使其隐身效果受到限制.为了解决该问题,在传统隐身结构中加入左手材料(LHM)进行改进.首先选取一种典型的LHM,从隐身设计角度出发,利用其雷达散射截面(RCS)计算不同入射角度下的后向吸收率,对其电磁特性进行研究.然后根据LHM的电磁特性,将其应用于翼面隐身结构,在相同的RCS减缩效果下,应用LHM可有效降低隐身结构体积.最后,为了进一步提高隐身效果,提出一种夹芯型LHM翼面隐身结构,并对该隐身结构中的结构参数利用代理模型进行优化.研究结果表明,相较金属翼面段RCS降低了15 dB以上,较相同结构的翼面隐身结构RCS降低了 10 dB以上.

关键词: 左手材料, 隐身结构, 优化, RCS, 代理模型

Abstract:

Low detectable wing structure can meet the aerodynamic, structure and stealth requirement of aircraft wing, but when it is applied to the wing with limited space, its stealth effect is restricted because of its structural characteristics. In order to solve this problem, left-handed material (LHM) is added in the traditional stealth structure in this paper. Firstly, from the viewpoint of stealth design, a typical LHM is selected to study its electromagnetic property by using the backward absorption rate which is calculated from its radar cross section (RCS) at different incidence angles. Then the LHM is used in the wing stealth structure according to its electromagnetic property. With the same RCS reduction effect, the application of LHM can effectively reduce the volume of the stealth structure. Finally, to further enhance the RCS reduction effect, a sandwich low detectable wing structure with LHM is put forward and the structure parameters are optimized by the surrogate model. The results show that the optimal structure RCS is reduced by 15 dB compared to the RCS of metal wing; it is reduced by more than 10 dB compared to the same wing structure without LHM.

Key words: LHM, low detectable structures, optimization, RCS, surrogate models

中图分类号:

V218

徐含乐, 祝小平, 周洲, 任武. 基于左手材料的翼面隐身结构设计及优化[J]. 航空学报, 2014, 35(12): 3331-3340.

XU Hanle, ZHU Xiaoping, ZHOU Zhou, REN Wu. Design and Optimization of Low Detectable Wing Structure Based on LHM[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014, 35(12): 3331-3340.

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E-mail：hkxb@buaa.edu.cn

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

基于左手材料的翼面隐身结构设计及优化

Design and Optimization of Low Detectable Wing Structure Based on LHM

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