航空学报 > 2019, Vol. 40 Issue (7): 322732-322732   doi: 10.7527/S1000-6893.2019.22732

直升机旋翼电磁特性模拟新技术

郭杰1,2, 殷红成1, 叶尚军3, 满良1, 贾崎1   

  1. 1. 电磁散射重点实验室, 北京 100854;
    2. 中国航天科工二院, 北京 100854;
    3. 浙江大学 航空航天学院, 杭州 310027
  • 收稿日期:2018-10-17 修回日期:2018-11-26 出版日期:2019-07-15 发布日期:2019-03-13
  • 通讯作者: 叶尚军 E-mail:yeshangjun@zju.edu.cn
  • 基金资助:
    国家自然科学基金(61490695);浙江省重点研发计划(2017C01044)

Novel technology for electromagnetic characteristic simulation of helicopter blades

GUO Jie1,2, YIN Hongcheng1, YE Shangjun3, MAN Liang1, JIA Qi1   

  1. 1. Science and Technology on Electromagnetic Scattering Laboratory, Beijing 100854, China;
    2. The Second Academy of CASIC, Beijing 100854, China;
    3. School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China
  • Received:2018-10-17 Revised:2018-11-26 Online:2019-07-15 Published:2019-03-13
  • Supported by:
    National Natural Science Foundation of China (61490695); Key R&D Program of Zhejiang Province (2017C01044)

摘要: 针对直升机电磁散射特性无源模拟的技术瓶颈,基于直升机桨叶的结构特点和雷达回波特性,提出一种基于小散射源阵列的新型旋翼散射特性增强技术,通过阵列合成公式和数值仿真分析了散射源阵列的雷达散射截面(RCS)的峰值大小、波峰数目、波峰位置、主瓣宽度等特性。同时,将该技术应用于国内某型无人直升机旋翼,设计了原理样机,并在微波暗室里对其电磁特性进行测试。测试结果与理论仿真结果吻合较好,验证了本方案的有效性和可行性,为试验模拟技术提供有力支持。

关键词: 电磁特性, 散射源阵列, 雷达模拟, 雷达散射截面(RCS), 直升机, 旋翼

Abstract: Aiming at the technical bottleneck of the passive simulation of helicopter electromagnetic scattering characteristics and based on the structure and electromagnetic characteristics of helicopter blades, this paper proposes a novel scattering characteristics augmented technology of blades that is based on small scattering source array. The peak value, the number of peaks, the position of the peaks, and the beamwidth of mainlobe of scattering source array's Radar Cross Section (RCS) are analyzed by array synthesis formula and numerical simulation. Moreover, for the application to the rotor of a domestic unmanned helicopter, a prototype of blade augmenter is designed and tested in a microwave anechoic chamber. The experimental results are in good agreement with the simulation results, verifying the validity and feasibility of the scheme, and greatly supporting the simulation technology.

Key words: electromagnetic characteristic, scattering source array, radar simulation, Radar Cross Section (RCS), helicopter, blade

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