介质涂覆位置对球面收敛喷管电磁散射特性影响

doi:10.7527/S1000-6893.2016.0295

Abstract

Abstract:

Shape design and stealth materials are generally used to reduce the radar cross section (RCS) of the target. To investigate the reduction effect of radar absorbing material (RAM) on the RCS of the spherical convergent vector nozzle (SCFN), the electromagnetic scattering characteristics of SCFN without coating radar absorbing material and eight coating solutions are studied and the backward RCS changing rule of the nine models in X band are obtained by using the iterative physics optics (IPO) with impedance boundary condition.The results show that coating the RAM can effectively reduce the RCS of the SCFN. A reasonable coating program can reduce the usage of the RAM and ensure the RCS reduction effect at the same time. It is found that 80% reduction effect of the RCS can be achieved and 30% less RAMs are used by coating only the wall of the spherical area and nozzle exit.

Key words: iterative physics optics, impedance boundary condition, radar absorbing material, spherical convergent vector nozzle, radar cross section

CLC Number:

V231

GUO Xiao, YANG Qingzhen, SHI Yongqiang, YANG Huicheng, BAI Jin. Electromagnetic scattering characteristics of spherical convergent vector nozzle with coating medium at different parts[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(4): 320430-320430.

References

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Electromagnetic scattering characteristics of spherical convergent vector nozzle with coating medium at different parts

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