Electromagnetic Scattering Characteristics of Binary Plug Nozzle with Coating Medium at Different Part

被引：0

作者：

Song Y. ^{[1
]}

Yang Q.-Z. ^{[1
]}

Gao X. ^{[1
]}

Shi Y.-Q. ^{[1
]}

He Y.-B. ^{[1
]}

机构：

[1] School of Power and Energy, Northwestern Polytechnical University, Xi’an

来源：

Tuijin Jishu/Journal of Propulsion Technology | 2022年 / 43卷 / 11期

关键词：

Absorbing material; Impedance boundary condition; Iterative physics optics method; Plug nozzle; Radar cross section;

D O I：

10.13675/j.cnki.tjjs.210509

中图分类号：

学科分类号：

摘要：

To research the reduction effect of radar absorbing materials on the radar cross section（RCS）of binary plug nozzles，the iterative physical optics（IPO）method with impedance boundary conditions was used to simulate the electromagnetic scattering characteristics of binary plug nozzles with uncoated and seven different media coating solutions. The main contribution source of electromagnetic scattering of binary plug nozzles is pointed out. The results show that：coating the center cone and the mixer with the absorbing material has limited effect on the RCS reduction of the plug nozzle. The mean value of the RCS of the combined coating of“center cone-plug”and“mixer-plug”is similar to the single coating of the plug cone. The full-coated model has the lowest average RCS. The plug and the outlet wall are the main sources of electromagnetic scattering for the binary plug nozzle. Taking the horizontal and vertical polarization of the yaw detection plane as an example，the “plug and the outlet”combined wall coating model can achieve 73% and 87% RCS reduction effects of the full coating. © 2022 Journal of Propulsion Technology. All rights reserved.

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