volume | PIER Journals

Abstract

This study introduces an approach for applying radar-absorbent material (RAM) coatings on aircraft engines to reduce the monostatic radar cross-section (mono RCS), leveraging near-field diagnostic analysis to guide the process. The primary goal is to improve the mono RCS stealth performance within the engine's intricate cavity structure. The finite-difference time-domain (FDTD) method is employed to accurately compute near-field distributions within the cavity, accounting for the complex interactions of electromagnetic wave propagation and scattering. This analysis method identifies critical hotspots within the engine cavity that significantly impact the RCS. An RAM coating scheme is then designed to target these ``hot spots'', resulting in substantial RCS reduction of the engine. The findings highlight the accuracy and effectiveness of this methodology, offering valuable contributions to the advancement of stealth technologies for next-generation aircraft engines.

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Dr. Yulang Li

Dr. Hongwei Deng

Dr. Linyuan Dou

Dr. Zeyong Wei