美国国家航空航天局NASA每日一图-2017年6月20日

Deployment of the Space Station's Roll Out Solar Array Experiment

Over the weekend of June 17-18, 2017, engineers on the ground remotely operated the International Space Station's robotic Canadarm2 to extract the Roll Out Solar Array (ROSA) experiment from the SpaceX Dragon resupply ship. The experiment will remain attached to the Canadarm2 over seven days to test the effectiveness of ROSA, an advanced, flexible solar array that rolls out like a tape measure.

Traditional solar panels used to power satellites can be bulky with heavy panels folded together using mechanical hinges. This new solar array's design rolls up to form a compact cylinder for launch with significantly less mass and volume, potentially offering substantial cost savings as well as an increase in power for satellites.

ROSA was developed as part of the Solar Electric Propulsion project sponsored by NASA’s Space Technology Mission Directorate. NASA tested the ROSA technology in vacuum chambers on Earth several years ago, and this is its first test in space. This solar array technology was developed to power large spacecraft using highly-efficient electric propulsion on missions to deep space including Mars and the moon.

More: Changing How Solar Power Rolls

Image Credit: NASA

Last Updated: June 21, 2017
Editor: Sarah Loff

空间站推出太阳能阵列实验的部署

在2017年6月17日至18日的周末,地面工程师远程操作国际空间站的机器人Canadarm2,从SpaceX龙补给船中提取推出太阳能阵列(ROSA)实验。实验将在七天内保留在Canadarm2上,以测试ROSA的有效性,ROSA是一种先进的柔性太阳能阵列,像卷尺一样推出。
用于为卫星供电的传统太阳能电池板可能体积庞大,重型面板使用机械铰链折叠在一起。这种新的太阳能电池阵列的设计加快了形成一个紧凑的发射筒,质量和体积明显减少,潜在地可以显着降低成本并增加卫星的功率。

ROSA是由美国宇航局空间技术委员会主办的太阳能电力推进项目的一部分开发的。美国宇航局几年前在地球上的真空室中测试了ROSA技术,这是它在空间上的第一次测试。这种太阳能阵列技术被开发用于使用高效电力推进对包括火星和月球在内的深空任务的大型航天器的能力。

更多:改变太阳能发电的方式

图片来源:NASA

最后更新:2017年6月21日
编辑:莎拉·洛夫

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