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首页> 外文期刊>Plasma Science, IEEE Transactions on >Combined Space Environmental Exposure Test of Multijunction GaAs/Ge Solar Array Coupons
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Combined Space Environmental Exposure Test of Multijunction GaAs/Ge Solar Array Coupons

机译：多结GaAs / Ge太阳电池阵列优惠券的组合空间环境暴露测试

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The purpose of this test program is to understand the changes and degradation of the space solar array panel components, including its electrostatic discharge (ESD) mitigation design features in their integrated form, after multiple years (up to 15) of simulated Earth geosynchronous (GEO) space environment. A set of multijunction GaAs/Ge solar array test coupons was subjected to five-year increments of combined environmental exposure tests. These tests consisted of the following: simulated ultraviolet (UV) radiation, ESD, electron/proton particle radiation, thermal cycling, and simulated ion thruster exposures. The solar radiation simulation was produced using a mercury–xenon lamp with wavelengths in the UV spectrum ranging from 230 to 400 nm. The ESD test was performed in the inverted-gradient mode using a low-energy electron (3–6 keV) beam exposure. The ESD test also included a simulated panel coverglass flashover for the primary arc event. The electron/proton radiation exposure included 1.0-MeV electrons, 100-keV electrons, and 40-keV protons. Thermal cycling included simulated transient Earth eclipse for satellites in geosynchronous orbit. With the increasing use of ion thruster engines on many satellites, the combined environmental exposure test also included ion thruster exposure to determine the impact on solar array performance, as well as the ion thruster interaction to ESD events. Before and after each increment of combined environmental exposures, the coupons underwent visual inspection using high power magnification and electrical tests that included characterization by large-area pulse solar simulator, dark $I$ –$V$, insulation resistance, and electroluminescence. This paper discusses the test objective, test methodologies, and preliminary results after five and ten years of simulated combined envir-nnmental exposure tests.
机译：该测试程序的目的是在模拟（长达15年）的模拟地球地球同步（GEO）之后，了解空间太阳能电池板组件的变化和退化，包括其集成形式的静电释放（ESD）缓解设计功能。 ）空间环境。一组多结GaAs / Ge太阳能电池阵列测试样片接受了五年的组合环境暴露测试。这些测试包括以下内容：模拟的紫外线（UV）辐射，ESD，电子/质子粒子辐射，热循环和模拟的离子推进器暴露。太阳辐射模拟是使用汞-氙灯产生的，该灯的紫外线光谱波长范围为230至400 nm。 ESD测试是使用低能电子（3–6 keV）束曝光以反向梯度模式进行的。 ESD测试还包括针对主要电弧事件的模拟面板覆盖玻璃飞弧。电子/质子辐射暴露包括1.0-MeV电子，100-keV电子和40-keV质子。热循环包括地球同步轨道卫星的模拟瞬态地球食。随着许多卫星上使用离子推进器发动机的增加，组合的环境暴露测试还包括离子推进器暴露，以确定对太阳能电池阵列性能的影响以及离子推进器与ESD事件的相互作用。在每次组合环境暴露增加之前和之后，试样均使用大功率放大倍率和电气测试进行目视检查，其中包括通过大面积脉冲太阳模拟器，深色I $ – $ V $，绝缘电阻和电致发光进行表征。本文讨论了经过五年和十年的模拟组合环境暴露测试后的测试目标，测试方法和初步结果。

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