File:James Webb telescope sunshield.jpg

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English: NASA: The Sunshield on NASA's James Webb Space Telescope is the largest part of the observatory—five layers of thin membrane that must unfurl reliably in space to precise tolerances. Last week, for the first time, engineers stacked and unfurled a full-sized test unit of the Sunshield and it worked perfectly.

The Sunshield is about the length of a tennis court, and will be folded up like an umbrella around the Webb telescope’s mirrors and instruments during launch. Once it reaches its orbit, the Webb telescope will receive a command from Earth to unfold, and separate the Sunshield's five layers into their precisely stacked arrangement with its kite-like shape.

The Sunshield test unit was stacked and expanded at a cleanroom in the Northrop Grumman facility in Redondo Beach, California.
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來源 http://www.nasa.gov/content/goddard/nasas-webb-sunshield-stacks-up-to-test/#.U9PIrfldXJZ
作者 Chris Gunn - NASA Goddard Space Flight Center
Chris Gunn    wikidata:Q110278636
 
Chris Gunn
描述 美國攝影師
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creator QS:P170,Q110278636

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目前2014年7月26日 (六) 15:31於 2014年7月26日 (六) 15:31 版本的縮圖4,928 × 3,280(645 KB)Liandrei{{Information |Description ={{en|1=NASA: The Sunshield on NASA's James Webb Space Telescope is the largest part of the observatory—five layers of thin membrane that must unfurl reliably in space to precise tolerances. Last week, for the first time...

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