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Rapid Modeling of Electrostatic Forces and Torques Considering Dielectrics

机译：考虑介电常数的静电力和转矩的快速建模

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摘要

Spacecraft can charge naturally to tens of kilovolts in geosynchronous orbit due to their interactions with the space plasma and the sun. This charging can cause forces and torques that can perturb the orbits of uncontrolled debris objects or be used as a formof touchless actuation in an active chargingmulticraft formation. Prior work for electrostatic force and torque prediction has developed rapid and accurate methods for conducting spacecraft using the multisphere method (MSM). This paper extends the MSM for spacecraft composed of conductors and dielectrics. It is found that, for some spacecraft and charging regimes, dielectrics can be neglected without introducing significant errors. For the cases that require dielectrics be considered, the MSM is augmented to include dielectric point charges as well as conducting spheres that are placed and sized by a numerical optimizer. Designs are developed that perform better than an average of 2% error for all spacecraft and charging scenarios considered.
机译：由于航天器与空间等离子体和太阳的相互作用，它们可以在地球同步轨道上自然充电至数十千伏。这种充电会引起力和转矩，这些力和转矩会扰乱不受控制的碎屑物体的轨道，或者在主动充电多用飞机中用作非接触式致动形式。静电力和扭矩预测的先前工作已经开发出使用多球面方法（MSM）进行航天器的快速，准确的方法。本文扩展了由导体和电介质组成的航天器的MSM。已经发现，对于某些航天器和充电方式，可以忽略电介质而不会引入明显的误差。对于需要考虑电介质的情况，将MSM扩展为包括电介质点电荷以及由数值优化器放置和确定大小的导电球。在所考虑的所有航天器和充电情况下，开发的设计的平均误差均优于平均2％。

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  • 来源
    《Journal of Spacecraft and Rockets》 |2019年第6期|1680-1688|共9页
  • 作者

    Hughes Joseph; Schaub Hanspeter;

  • 作者单位

    Univ Colorado Dept Aerosp Engn 429 UCB Boulder CO 80309 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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