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直升机翼面类部件雷达目标特性分析及评估

蒋相闻,  招启军

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文章导航 > 航空动力学报  > 2016 >  31(11): 2691-2700
蒋相闻, 招启军. 直升机翼面类部件雷达目标特性分析及评估[J]. 航空动力学报, 2016, 31(11): 2691-2700. doi: 10.13224/j.cnki.jasp.2016.11.017
引用本文: 蒋相闻, 招启军. 直升机翼面类部件雷达目标特性分析及评估[J]. 航空动力学报, 2016, 31(11): 2691-2700. doi: 10.13224/j.cnki.jasp.2016.11.017
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JIANG Xiang-wen, ZHAO Qi-jun. Analysis and evaluation about radar target scattering characteristics of helicopter wing components[J]. Journal of Aerospace Power, 2016, 31(11): 2691-2700. doi: 10.13224/j.cnki.jasp.2016.11.017
Citation: JIANG Xiang-wen, ZHAO Qi-jun. Analysis and evaluation about radar target scattering characteristics of helicopter wing components[J]. Journal of Aerospace Power, 2016, 31(11): 2691-2700. doi: 10.13224/j.cnki.jasp.2016.11.017
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直升机翼面类部件雷达目标特性分析及评估

doi: 10.13224/j.cnki.jasp.2016.11.017

  • 南京航空航天大学 航空宇航学院 直升机旋翼动力学国家级重点实验室, 南京 210016

基金项目: 

江苏高校优势学科建设工程资助项目

详细信息
    作者简介:

    蒋相闻(1982-),男,安徽明光人,博士生,主要从事直升机隐身设计、计算电磁学和直升机计算流体力学研究.

    通讯作者:

    招启军(1977-),男,江苏金湖人,教授、博士生导师,博士,主要从事直升机计算流体力学、直升机空气动力学、隐身设计及流动控制等方面的研究.E-mail:zhaoqijun@nuaa.edu.cn

  • 中图分类号: V218;TN974

Analysis and evaluation about radar target scattering characteristics of helicopter wing components

  • National Key Laboratory of Science and Technology on Rotorcraft Aeromechanics, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

    摘要
  • 摘要: 基于准静态原理，采用电磁高频法开展直升机翼面类部件的雷达目标特性分析及评估.首先，为获得翼面类部件对直升机散射特性的影响规律，并考虑旋翼高速旋转的动态效应，着重分析了装配不同翼面类部件后机身雷达散射截面（RCS）的变化趋势、强散射分布和回波信号的时频域谱特征，揭示了翼面类部件雷达散射影响机理；然后，在评估直升机强散射源分布特征和多元响应特性的基础上，比较装配不同翼面类部件后机身的雷达探测距离，提出并建立了方位、俯仰与滚转姿态下直升机的雷达4级预警机制和角域范围，并针对性的给出对抗雷达探测的方案.研究发现：装配平尾、短翼及平尾和短翼组合的直升机相比孤立机身的雷达暴露距离分别增加11.54%，14.88%和18.06%，综合隐身能力下降.

     

    Abstract: Considering quasi-stationary principle, analysis and evaluation about helicopter wing components on the radar scattering characteristics were investigated based on electromagnetic high-frequency method. Firstly, in order to obtain effects about the radar scattering characteristics of the helicopter wing components, the RCS(radar cross section) changes, the strong scattering regions, and the time-frequency domain of echo signal were analyzed considering the dynamic features of rotor high-speed rotation; as a result, the scattering mechanisms of wing components were revealed. Then, according to the strong scattering distributions and multiple response characteristics of the helicopter, the radar detection range of the helicopter with different wing components was compared, four levels warning mechanism and angle domains about azimuthal, pitch and roll attitudes were proposed, and the corresponding strategy against the radar detection was given. It shows that the radar exposure distance of helicopter fuselage with difference wing components such as the horizontal stabilator, wingstub and their combinations, increase by 11.54%, 14.88% and 18.06%, respectively, and comprehensive radar stealth performances of the helicopter are declined.

     

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  • 收稿日期:  2015-03-18
  • 刊出日期:  2016-11-28

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