Listening to the NASA briefing about the @NASAWebb telescope launch next month, and heard the phrase
"140 single points of failure"
and now I feel a little ill.
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2. Webb is unusual for the scope of its deployments and hence the raw number of its SPFs, but its non-deployment related SPFs are not at all unusual. Many satellites have a large number of SPFs.
As our senior scientist John Mather says: "We did what it takes to win. We sketched, we argued, we worried, we analyzed, we made a plan, we wrote down everything, we made checklists, we built the parts, we put them together, we tested as though our lives depend on it."
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That quote is going on my office wall. Well said.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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Yes, they tested the telescope very well, fully deployed in an appropriate environment. The spacecraft, not so much. This is the largest gossamer structure ever attempted in space. And 5 of them must be aligned edge-to-edge and correctly spaced apart.
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It was tested a grand total of three times. At room temperature. With modifications and repairs made after each test including the last one: https://science.nasa.gov/science-pink/s3fs-public/atoms/files/Smith%20JWST%20APAC%20March2021.pdf …
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