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Volume 39 Issue 6
Jun.  2013
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Journal of Beijing University of Aeronautics and Astronautics  > 2013  >  (6): 745-750.
Bao Xiaoxiang, Zhang Yunfei, Du Xiaosonget al. Radar scattering characteristics and RCS reduction of utility helicopter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, (6): 745-750. (in Chinese)
Citation: Bao Xiaoxiang, Zhang Yunfei, Du Xiaosonget al. Radar scattering characteristics and RCS reduction of utility helicopter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, (6): 745-750. (in Chinese)
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Radar scattering characteristics and RCS reduction of utility helicopter

  • School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 06 Jun 2012
  • Publish Date: 30 Jun 2013
    Abstract
  • The physical optics (PO) and the method of equivalent currents (MEC) were used as the numerical computation method, and its feasibility was verified by experiment. A geometric model of conventional utility helicopter was established. Then its radar cross section(RCS)was calculated and analyzed. RCS reduction research was done by modifying the geometric shape and changing the number of rotating blades. The low observable shape of utility helicopter was put forward without large variation in static stability and available volume. The average RCS of the modified utility helicopter in forward (backward) and side direction is equivalent to 10%, 1% of the conventional one respectively. Rotating blades become the main radar scattering source of the modified helicopter, especially in the forward and backward direction. Some other methods are need to reduce the RCS further.

     

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