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Re:The U.S. Air Force just admitted the F-35 stealth fighter... by hansthehorse on Wednesday February 24, 2021 @05:01PM (#26256658)
The time from project start to first flight of the SR 71 was 47 months - with slide rules and manual drafting.
Re:The U.S. Air Force just admitted the F-35 stealth fighter... by p_l on Sunday February 28, 2021 @07:38PM (#26298531)
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".