Open Access

ARTICLE

Effects of Radar Absorption Materials Application on Stealth Performance of Inlet Based on Risk Theory

Shuang Liu^1,*, Zhiyin Guo^2,3, Lihai Chen⁴
1 School of Aero-Engine, Zhengzhou University of Aeronautics, Zhengzhou, 450046, China
2 School of Humanities and Law, Zhengzhou University of Aeronautics, Zhengzhou, 450046, China
3 Social Science Department, University of Gdańsk, Gdańsk, 80-309, Poland
4 Department of Thermal Engineering, Hebei Petroleum University of Technology, Chengde, 067000, China
* Corresponding Author: Shuang Liu. Email:

Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería https://doi.org/10.32604/rimni.2024.056526

Received 24 July 2024; Accepted 27 September 2024; Published online 12 October 2024

Abstract

One significant technical measure to reduce the forward radar cross section (RCS) of the aircraft was to design the inlet into an S-shape. Additionally, the application of radar-absorbing material (RAM) can further decrease the RCS of the air intake which approach enhances the stealth capabilities of the aircraft. Nevertheless, the use of RAM will simultaneously increase the inherent weight of the air intake. The electromagnetic scattering characteristics of S-shaped inlets without RAM coating and seven coating schemes are calculated by numerical simulation. The risk theory was employed to assess the impact of the coating RAM on the radar cross-section. The simulation results indicate that coating RAM can further reduce the forward average RCS value. Compared to the full coating scheme the S-shaped inlets with RAM on the intake region can achieve 90% of the RCS reduction effect and cut down approximately forty percent of the coating.

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Keywords

S-shaped inlet; radar cross section; coating scheme; risk theory

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