The original F-16 prototype would turn so quickly that no human being could possibly survive the turns it was capable of, they basically nerfed it to make a human pilot possible.
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9 G’s max, hard-wired into the fly-by-wire computers. If you need 9.5 Gs to avoid hitting the ground you ride the rocket. Worked on ‘em.
Original wings were flexible and they would change shape based on how quickly you were traveling, also when you started to take a turn the wings would actually Flex to allow you to turn at a tighter angle of attack, it didn’t work out because they figured out no human could possibly survive the Gs that were involved. It was an insane amount, I want to say 14 G’s