Viewing electromagnetic scattering characteristics on air-brake of a stealth plane

IF 1.2 4区工程技术 Q3 ENGINEERING, AEROSPACE

Aircraft Engineering and Aerospace Technology Pub Date : 2024-04-01 DOI:10.1108/aeat-10-2023-0269

Zeyang Zhou, Jun Huang

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引用次数: 0

Abstract

Purpose

This study aims to learn the dynamic radar cross-section (RCS) of a deflection air brake.

Design/methodology/approach

The aircraft model with delta wing, V-shaped tail and blended wing body is designed, and high-precision unstructured grid technology is used to deal with the surface of air brake and fuselage. The calculation method based on multiple tracking and dynamic scattering is presented to calculate RCS.

Findings

The fuselage has a low scattering level, and the opening air brake will bring obvious dynamic RCS effects to itself and the whole machine. The average indicator of air brake RCS can be lower than –0.6 dBm² under the tail azimuth, while that of forward and lateral direction is lower. The mean RCS of fuselage is obviously higher than that of air brake, while the deflected air brake and its cabin can still provide strong scattering sources at some azimuths. When the air brake is opening, the change amplitude of the aircraft forward RCS can exceed 19.81 dBm².

Practical implications

This research has practical significance for the dynamic electromagnetic scattering analysis and stealth design of the air brake.

Originality/value

The calculation method for aircraft RCS considering air brake dynamic deflection has been established.

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查看隐形飞机空气制动器的电磁散射特性

设计/方法/途径设计了三角翼、V型尾翼和混合翼身的飞机模型，采用高精度非结构网格技术处理气闸和机身表面。结果机身散射水平较低，打开气刹车会给自身和整机带来明显的动态 RCS 影响。在尾部方位角下，气闸 RCS 的平均指标可低于-0.6 dBm2，而正向和侧向的 RCS 指标则更低。机身的平均 RCS 明显高于气闸，而偏转的气闸及其座舱在某些方位角仍能提供较强的散射源。当空气制动打开时，飞机前向 RCS 的变化幅度可超过 19.81 dBm2。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aircraft Engineering and Aerospace Technology 工程技术-工程：宇航

CiteScore

3.20

自引率

13.30%

发文量

168

审稿时长

8 months

期刊介绍： Aircraft Engineering and Aerospace Technology provides a broad coverage of the materials and techniques employed in the aircraft and aerospace industry. Its international perspectives allow readers to keep up to date with current thinking and developments in critical areas such as coping with increasingly overcrowded airways, the development of new materials, recent breakthroughs in navigation technology - and more.