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Prediction Performance of Blackout and Plasma Attenuation in Atmospheric Reentry Demonstrator Mission

机译：大气再入演示器任务的停电和等离子体衰减的预测性能

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摘要

A numerical simulation model that combines the plasma flows and electromagnetic waves around a reentry vehicle during atmospheric reentry was developed to evaluate the radio frequency blackout and plasma attenuation. The physical properties of the plasma flow in the shock layer and wake region were obtained using a computational fluid dynamics technique. The electromagnetic waves were expressed using a frequency-dependent finite difference time domain method with the plasma properties. Combined simulations were performed for the atmospheric reentry demonstrator of the ESA at various altitudes based on reentry orbit data. The electromagnetic wave behaviors around the vehicle during atmospheric reentry were investigated in detail. Moreover, a parametric analysis with different ionization reaction models was performed. It was confirmed that the vehicle is surrounded by the plasma and the propagation of the electromagnetic waves is prevented at high altitude. Then, the plasma is dissipated and the propagation recovers at low altitude. Validation of the simulation model was performed based on the plasma attenuation history of the experimental flight data. A comparison of the measured and predicted results showed good agreement It was concluded that the combined simulation model could be an effective tool for investigating the radio frequency blackout and the plasma attenuation of radio wave communication.
机译：建立了将大气再入期间再入飞行器周围的等离子体流和电磁波结合起来的数值模拟模型，以评估射频停电和等离子体衰减。使用计算流体动力学技术获得了激波层和尾流区域中等离子体流的物理特性。使用具有等离子体特性的频率相关的有限差分时域方法表示电磁波。根据重入轨道数据，对不同高度的ESA大气重入演示器进行了组合模拟。详细研究了大气再入期间车辆周围的电磁波行为。此外，进行了具有不同电离反应模型的参数分析。证实了车辆被等离子体包围并且在高海拔处防止了电磁波的传播。然后，等离子体消散，并且传播在低海拔下恢复。基于实验飞行数据的等离子体衰减历史执行仿真模型的验证。实测结果与预测结果的比较表明吻合良好。结论是，组合仿真模型可以作为研究射频停电和无线电波等离子体衰减的有效工具。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2014年第6期|1954-1964|共11页
  • 作者

    Yusuke Takahashi; Kazuhiko Yamada; Takashi Abe;

  • 作者单位

    Hokkaido University, Hokkaido 060-8628, Japan;

    Japan Aerospace Exploration Agency, Kanagawa 252-5210, Japan;

    Japan Aerospace Exploration Agency, Kanagawa 252-5210, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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