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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Radio Frequency Attenuation by Rocket Plume From Ground Study to In-flight Prediction
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Radio Frequency Attenuation by Rocket Plume From Ground Study to In-flight Prediction

机译：火箭羽从地面研究到空中预测的射频衰减

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摘要

Radio frequency communication between the space launcher and the mission control are unusually disturbed by the exhaust plume present in rocket engines. This paper presents the computation of radio wave propagation through the exhaust plume. Thus, frequency-domain finite element method and time-domain discontinuous Galerkin method are implemented for computations in case of a ground domain experiments. Numerical results compared to those obtained from ground experiment show good approximation of the propagation through the plasma over a wide frequency band. For the launcher in flight, an asymptotic method is proposed and has the advantage to give a fast evaluation of the scattering solution. In this case, the exhaust plume area is considered as a perfectly conducting trapezium whose parameters are extracted from the distribution of the plasma permittivity. Results related to the asymptotic method appear to be in good agreement with results based on the full wave approaches.
机译：太空火箭与任务控制装置之间的射频通信异常地受到火箭发动机中存在的废气羽流的干扰。本文介绍了通过废气羽流传播的无线电波的计算方法。因此，在地域实验的情况下，可采用频域有限元法和时域不连续伽勒金法进行计算。与从地面实验获得的数值结果相比，数值结果显示了在宽频带上通过等离子体的传播具有良好的近似性。对于飞行中的发射器，提出了一种渐近方法，其优点是可以快速评估散射解。在这种情况下，排气羽流区域被认为是一个理想的导电梯形，其参数是从等离子体介电常数的分布中提取的。与渐近方法有关的结果似乎与基于全波方法的结果非常吻合。

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    Dieudonne Eva; Kameni Abelin; Pichon Lionel; Monchaux David;

  • 作者单位

    UPMC Univ Paris 06, Sorbonne Univ, Cent Supelec, Univ Paris Sud,Univ Paris Saclay, 3 & 11,Rue Joliot Curie, F-91192 Gif Sur Yvette, France|CNES DLA Ctr Natl Etud Spatiales, Direct Lanceurs, 52 Rue Jacques Hillairet, F-75612 Paris, France;

    UPMC Univ Paris 06, Sorbonne Univ, Cent Supelec, Univ Paris Sud,Univ Paris Saclay, 3 & 11,Rue Joliot Curie, F-91192 Gif Sur Yvette, France;

    UPMC Univ Paris 06, Sorbonne Univ, Cent Supelec, Univ Paris Sud,Univ Paris Saclay, 3 & 11,Rue Joliot Curie, F-91192 Gif Sur Yvette, France;

    CNES DLA Ctr Natl Etud Spatiales, Direct Lanceurs, 52 Rue Jacques Hillairet, F-75612 Paris, France;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Asymptotic method; electromagnetic; finite element; plasma; rocket plume; scattering;

    机译：渐近法电磁有限元等离子体羽羽散射;

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