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It's fitting for Hansen's drawing (which he didn't himself draw; the artist, Mike Wagnon, was a technical artist who usually drew airplanes) to be transformed into a literal blueprint. It's exactly what he wanted it to evoke.
It's also interesting that they didn't just use Hansen's image — they redrew it. You can see that the caption call-outs are a little different (circled numbers), and that they've "smoothed" some of the casing cutaways.
Bonus: the drawing that Hansen gave Wagnon to work from in making his image, along with reference photos that his wife took of museum models of the casing. First one is dated March 1973.pic.twitter.com/3cVASSkSu7
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