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Terra Flexible Blanket Solar Array Deployment, On-Orbit Performance and Future Applications

机译:Terra Flexible Blanket太阳电池阵列的部署,在轨性能和未来应用

摘要

The Terra spacecraft (formerly identified as EOS AM1) is the flagship in a planned series of NASA/GSFC (Goddard Space Flight Center) Earth observing system satellites designed to provide information on the health of the Earth's land, oceans, air, ice, and life as a total ecological global system. It has been successfully performing its mission since a late-December 1999 launch into a 705 km polar orbit. The spacecraft is powered by a single wing, flexible blanket array using single junction (SJ) gallium arsenide/germanium (GaAs/Ge) solar cells sized to provide five year end-of-life (EOL) power of greater than 5000 watts at 127 volts. It is currently the highest voltage and power operational flexible blanket array with GaAs/Ge cells. This paper briefly describes the wing design as a basis for discussing the operation of the electronics and mechanisms used to achieve successful on-orbit deployment. Its orbital electrical performance to date will be presented and compared to analytical predictions based on ground qualification testing. The paper concludes with a brief section on future applications and performance trends using advanced multi-junction cells and weight-efficient mechanical components.
机译:Terra航天器(以前称为EOS AM1)是NASA / GSFC(Goddard太空飞行中心)计划的一系列地球观测系统卫星中的旗舰,这些卫星旨在提供有关地球陆地,海洋,空气,冰层和地球健康状况的信息。生命作为一个整体的生态全球系统。自1999年12月下旬发射进入705公里的极地轨道以来,它一直在成功执行其任务。该航天器由单翼柔性毯状阵列提供动力,该阵列使用单结(SJ)砷化镓/锗(GaAs / Ge)太阳能电池,其尺寸可在127°C时提供大于5000瓦的五年寿命(EOL)功率伏特它是目前使用GaAs / Ge电池的最高电压和功率的可操作柔性毯式阵列。本文简要介绍了机翼设计,以此作为讨论成功实现在轨部署所使用的电子设备和机制的基础。将介绍迄今为止的轨道电性能,并将其与基于地面鉴定测试的分析预测进行比较。本文以使用高级多结电池和重量轻巧的机械组件的未来应用和性能趋势作为简短的结尾。

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