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Atypical Normal Potential Gradient Arcing on Solar Arrays

机译：太阳电池阵列上的非典型正态梯度电弧

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摘要

Most spacecraft arcing studies have been of the typical inverted gradient arcing because geomagnetic substorms tend to charge spacecraft very negative of dielectric surfaces. However, normal gradient arcing, where the spacecraft is positive of its dielectric surfaces, may be more damaging because it usually occurs at higher differential potentials and thus may involve more capacitive energy, and it happens more quickly, so that it has faster rise times. Furthermore, there is evidence that some sustained arcs have started under normal potential gradients, and laboratory testing has shown that arcing can and does occur under normal gradient conditions. Also, normal gradient arcing may occur on the backs of solar arrays. Finally, normal gradient arcing may produce more contaminants and more radio-frequency interference than inverted gradient arcing and thus may contribute to the GPS arcing power degradation problem. Here, a review of old and new evidence for normal gradient arcing on orbit and in the laboratory is presented; differences in electron energy that may contribute to normal gradients are discussed; differences in test methods are pointed out; the arcing standards up to the present time and how they address normal gradient arcing are commented on; and a plan of action against satellite anomalies that may result from normal gradient arcing is laid out.
机译：大多数航天器电弧放电研究都是典型的倒坡电弧放电，因为地磁亚暴往往会使航天器带负电的表面非常负电。但是，正常的梯度电弧放电（航天器为其电介质表面为正）可能更具破坏性，因为它通常发生在较高的差分电势下，因此可能涉及更多的电容能量，并且发生得更快，因此上升时间更快。此外，有证据表明，某些持续电弧是在正常电势梯度下开始的，而实验室测试表明，电弧在正常梯度条件下也可能会发生。同样，正常的梯度电弧放电可能会发生在太阳能电池阵列的背面。最后，正常的梯度电弧放电可能比反向梯度电弧放电产生更多的污染物和更多的射频干扰，因此可能导致GPS电弧放电功率下降问题。在此，我们将介绍有关轨道上和实验室中正常梯度电弧放电的新旧证据的综述；讨论了可能有助于正常梯度的电子能量差异；指出测试方法的差异；评论了当前的电弧放电标准以及它们如何解决正常的梯度电弧放电；并制定了应对由正常梯度电弧产生的卫星异常的行动计划。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2018年第3期|698-711|共14页
  • 作者

    Ferguson Dale C.; Hoffmann Ryan C.; Plis Elena A.; Engelhart Daniel P.;

  • 作者单位

    US Air Force Res Lab, Spacecraft Charging Sci & Technol, Space Vehicles Directorate, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA;

    US Air Force Res Lab, Spacecraft Charging & Instrument Calibrat Lab, Space Vehicles Directorate, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA;

    Assurance Technol Corp, Adv Space Aerosp & Terr Syst, 84 South St, Carlisle, MA 01741 USA;

    US Natl Res Council, Space Vehicles Directorate, 3550 Aberdeen Ave SE, Kirtland AFB, NM 87117 USA;

  • 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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