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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 >SECONDARY ARCS ON SOLAR ARRAYS: OCCURENCE, THRESHOLDS, CHARACTERISTICS AND INDUCED DAMAGE
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SECONDARY ARCS ON SOLAR ARRAYS: OCCURENCE, THRESHOLDS, CHARACTERISTICS AND INDUCED DAMAGE

机译：太阳能阵列的二次弧：发生率，阈值，特征和诱发的损伤

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Secondary arcs have been triggered on dummy solar arrays as well as on real solar arrays. Their occurrence and temporal characteristics have been studied versus a series of parameters: Vs, Ilim, inter cell distance (gap), location of primary discharge, electrode material (copper, zinc, AsGa and Si cells). The arcs were characterized by means of electric records (arc and current voltage versus time), and by means of a spectrometer analyzing the species produced in the metal vapor of the arc. Very clear (and severe) macroscopic damage resulted on the samples that underwent well identified arcs: on those samples, there is material melting, burning, and loss of functionality. Nearly 200 arcs were obtained and analyzed: the laboratory findings, combined with the observation of satellites power losses in orbit, put the reality and the harmfulness of such arcs in space beyond any doubt. The study has produced lot of information about the nature of the secondary arcs, their voltage and current thresholds, the dependence of the voltage thresholds on the gap. The study has definitely improved the knowledge of the test procedure to be used in order to ascertain the solar array immunity against secondary arcs.
机译：在虚拟太阳能电池阵列以及实际太阳能电池阵列上都已触发了次级电弧。已针对一系列参数研究了它们的出现和时间特性：Vs，Ilim，电池间距离（间隙），一次放电的位置，电极材料（铜，锌，AsGa和Si电池）。通过电记录（电弧和电流电压与时间的关系）以及通过分光计分析电弧金属蒸气中产生的物质来表征电弧。经过清晰识别的电弧的样品会造成非常明显（严重）的宏观损坏：在这些样品上，材料会熔化，燃烧并失去功能。获得并分析了近200条电弧：实验室的发现，结合对卫星在轨功率损耗的观察，毫无疑问地证明了这种电弧在太空中的真实性和危害性。该研究产生了许多有关次级电弧的性质，其电压和电流阈值，电压阈值对间隙的依赖性的信息。该研究无疑提高了用于确定太阳能电池阵列对次级电弧的免疫力的测试程序的知识。

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