Volume 31 Issue 11
Nov.  2016
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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

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

doi: 10.13224/j.cnki.jasp.2016.11.017
  • Received Date: 2015-03-18
  • Publish Date: 2016-11-28
  • 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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