Lsherm: Jesus, you could rupture someone's anus doing that.
Tillmaster: Why? Oh, why?
studebaker hoch: At 0:35 there is a single frame where you can see the airbag fully inflated and his butt has risen about one foot off stack of tires. His head hasn't moved much, maybe an inch or so, the frame has some blur artifacts from the crappy camera.Either he got about a foot shorter for a split second at liftoff, or he bent his back in a 'C' quite badly.With the bag fully inflated, the explosion and its thrust is long over. He now coasts to apogee near the roof, and returns to earth on a ballistic trajectory.I'm assuming the frame rate of the camera is on the order of 32 frames per second. Correct me here if you know differently.If you went 1 foot in 1/32 of a second, and started out with a speed of zero, how fast did you accelerate? Units are feet and seconds.x = x0 + v0t + att/21 = 0 + 0 + a (1/32 * 1/32) /21 = a * 0.000488281a = 2048 feet per second squared.The force of gravity is 32 feet per second squared.I get 64 G's. Fatal, but he only took it for 1/32 of a second. Then zero G's for the rest of the flight.Obviously he can't accelerate that fast, and didn't. That's why his head isn't moving in that frame and his ass is trying to go through him. His spine can't lift a body that now weighs 64 times normal, and simply bends out of the way. Now granted, his spine only supports his upper body, call that 1/3 of his mass, that's still about 20 times his body weight, and he can't do it. His spine yields and bends in a 'C'.I'm guessing spinal injury at least, though his internal organs may have been somewhat protected by the yielding of his spine. Had it not bent, they would have come out his ass. (and may have). It's possible his clothing and the padding placed over the charge saved his ass, literally, by keeping everything inside.His brain was hit by the bottom of his skull hard enough to knock him out. He slept through his suborbital journey, and likely lost his short-term memory as well - and has no idea what happend except that his a ...
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