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首页> 外文会议>7th Spacecraft Charging Technology Conference 2001: a Spacecraft Charging Odyssey, Apr 23-27, 2001, Noordwijk, the Netherlands >MAGNETIC SELF-FIELD EFFECTS ON BARE-TETHER CURRENT COLLECTION
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MAGNETIC SELF-FIELD EFFECTS ON BARE-TETHER CURRENT COLLECTION

机译：裸露电流电流集合的磁自场效应

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摘要

It has been recently suggested that the magnetic field created by the current in a bare tether could sensibly reduce its electron collection capability in the magnetised ionosphere, a region of closed magnetic surfaces disconnecting the cylinder from infinity. In this paper, the ohmic voltage drop along the tether is taken into account in considering self-field effects. Separate analyses are carried out for the thrust and power generation and drag modes of operation, which are affected in different ways. In the power generation and drag modes, bias decreases as current increases along the tether, starting at the anodic, positively-biased end (upper end in the usual, eastward-flying spacecraft); in the thrust mode of operation, bias increases as current increases along the tether, starting at the lower end. When the ohmic voltage drop is considered, self-field effects are shown to be weak, in all cases, for tape tethers, and for circular cross-section tethers just conductive in a thin outer layer. Self-field effects might become important, in the drag case only, for tethers with fully conductive cross sections that are unrealistically heavy.
机译：最近，有人提出，在裸露的绳索中由电流产生的磁场会明显降低其在磁化电离层中的电子收集能力，闭合的磁性表面区域使圆柱与无限远处断开。在本文中，考虑自电场效应时会考虑沿系绳的欧姆压降。对推力，动力产生和阻力操作模式分别进行了分析，它们以不同的方式受到影响。在发电和拖曳模式下，偏置电流随着电流沿系绳的增加而减小，从阳极的正向偏置端开始（通常在向东飞行的航天器的上端）开始；在推力操作模式下，从下端开始，随着电流沿系链的增加，偏置也会增加。当考虑到欧姆压降时，在所有情况下，对于带状系链和圆形横截面系链，仅在薄的外层中导电，自场效应显示为较弱。对于具有完全导电横截面且不切实际的绳索，自电场效应可能仅在拖曳情况下变得很重要。

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