The time from project start to first flight of the SR 71 was 47 months - with sl... | Hacker News

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		hansthehorse on Feb 24, 2021 \| parent \| context \| favorite \| on: The U.S. Air Force just admitted the F-35 stealth ... The time from project start to first flight of the SR 71 was 47 months - with slide rules and manual drafting.

p_l on March 1, 2021 [–]

With heavy use of computers, including one special that was built just for the project effectively - and it was critical for the project getting off the ground at all. And even then a lot of the calculation was done on specialised scientific calculators operated by low-status (human) "computers".

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