What is the largest amount of G-force a human can survive?

Answer 1

From Wikipedia -

Strongest g-forces survived by humans

Voluntarily: Colonel John Stapp in 1954 sustained 46.2 g in a rocket sled, while conducting research on the effects of human deceleration. See Martin Voshell (2004), 'High Acceleration and the Human Body'.

Involuntarily: Formula One race car driver David Purley survived an estimated 179.8 g in 1977 when he decelerated from 172 km·h−1 (107 mph) to 0 in a distance of 66 cm (26 inches) after his throttle got stuck wide open and he hit a wall

Answer 2

6-9 G's. More than that we implode crushed by our own mass. Jet pilots and astronauts come closest to experiencing these forces in real life. The acceleration is the thing, not the speed. Humans could travel at light-speed if only we accelerated properly.

Answer 3

Colonel John Stapp in 1954 sustained 46.2 g in a rocket sled, while conducting research on the effects of human deceleration.

Answer 4

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Answer 5

I'd search for the work that has been done by the Air Force and by NASA.

http://science.nasa.gov/headlines/y2003/07feb_stronggravity.htm

Answer 6

I don't know the answer, but I suspect that when someone answers who does know about such things, they will tell you that the answer depends on how long it is applied.