Numerical study on plasma layer manipulation for blackout mitigation by pulsed magnetic field

IF 5.8 1区工程技术 Q1 ENGINEERING, AEROSPACE Aerospace Science and Technology Pub Date : 2025-05-01 Epub Date: 2025-02-10 DOI:10.1016/j.ast.2025.110039

Shunhao Peng , Yongliang Feng , Xiaojing Zheng

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Abstract

Radio communication blackout is one of the most significant obstacles to the operation and telemetry of hypersonic vehicles. The plasma manipulation with a pulsed magnetic field has been identified as a promising solution to the blackout problem through laboratory observations. To evaluate the effect of the pulsed magnetic field in realistic hypersonic flight conditions, this work numerically studies pulsed magnetic field manipulation for the plasma layer of hypersonic vehicles based on the magnetohydrodynamic model coupled with the high-temperature gas effect. The Wentzel-Kramer-Brillouin (WKB) method is used to analyze the transmission characteristics of electromagnetic waves in a magnetized plasma. The numerical results show that the pulsed magnetic field with suitable pulse duration can reduce electron density and radio attenuation near the antenna. The communication window created by the pulsed magnetic field allows lower-frequency radio to transmit through the plasma layer and the duration of the window can last more than 0.1 ms. Besides, the effect of blackout mitigation by the pulsed magnetic field is significantly enhanced with increasing magnetic field strength at each flight altitude. These investigations can provide useful information for designing and optimizing electromagnetic manipulation for blackout mitigation.

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脉冲磁场对等离子体层控制的数值研究

无线电通信中断是高超声速飞行器运行和遥测的最大障碍之一。通过实验室观察，脉冲磁场等离子体操纵已被确定为解决停电问题的一个有希望的解决方案。为了评估脉冲磁场对高超声速飞行的实际影响，本文基于磁流体动力学模型，结合高温气体效应，对脉冲磁场对高超声速飞行器等离子体层的操纵进行了数值研究。采用温策尔-克莱默-布里渊（WKB）方法分析电磁波在磁化等离子体中的传输特性。数值结果表明，适当脉宽的脉冲磁场可以降低天线附近的电子密度和无线电衰减。脉冲磁场产生的通信窗口允许低频无线电通过等离子体层传输，窗口的持续时间可以超过0.1毫秒。此外，在每个飞行高度，随着磁场强度的增加，脉冲磁场缓解停电的效果显著增强。这些研究可以为设计和优化电磁控制以缓解停电提供有用的信息。

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来源期刊

Aerospace Science and Technology 工程技术-工程：宇航

CiteScore

10.30

自引率

28.60%

发文量

654

审稿时长

54 days

期刊介绍： Aerospace Science and Technology publishes articles of outstanding scientific quality. Each article is reviewed by two referees. The journal welcomes papers from a wide range of countries. This journal publishes original papers, review articles and short communications related to all fields of aerospace research, fundamental and applied, potential applications of which are clearly related to: • The design and the manufacture of aircraft, helicopters, missiles, launchers and satellites • The control of their environment • The study of various systems they are involved in, as supports or as targets. Authors are invited to submit papers on new advances in the following topics to aerospace applications: • Fluid dynamics • Energetics and propulsion • Materials and structures • Flight mechanics • Navigation, guidance and control • Acoustics • Optics • Electromagnetism and radar • Signal and image processing • Information processing • Data fusion • Decision aid • Human behaviour • Robotics and intelligent systems • Complex system engineering. Etc.