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01-06-2012, 09:19 AM #21
Ok, I'll say it....FAKE!, FAKE!, FAKE!
Honestly, if they were going to do that kind of test, they would have covered the screen as well to protect it.
01-06-2012, 09:22 AM #22
GoPro cameras are pretty bad-*** alright, but I'm pretty impressed with how the electronics of an unmodified iPad would have survived that altitude. I'm not intelligent enough in this field (meteorology?) to really speak on it, but what I do know tells me that there'd be a rapid build-up of moisture inside a warm iPad (heated from the functioning components) falling rapidly from extremely low temperatures and atmospheric pressures. The internals not being conformal-coated, I can only guess that the moisture has a potential to do some damage.
I'm not calling this fake and I'm not saying that the iPad is zomg pwned!!1, just thinking critically. Guess that's what I do.
01-06-2012, 10:15 AM #23
I don't know about y'all but it didn't look like it hit the ground at terminal velocity to me. Terminal velocity for most objects I think is somewhere in the 120-130 mph range, and it didn't look it hit the ground NEARLY that fast. The ground impact should have been wayyyy more violent than that, methinks.
01-06-2012, 10:52 AM #24
Originally Posted by PatrickGSR94
01-06-2012, 03:43 PM #25
Last edited by poynter32; 01-06-2012 at 03:45 PM.
01-06-2012, 07:05 PM #26
01-09-2012, 09:31 AM #27
There you go folks, NASA's terminal velocity calculator. Down at the bottom, I entered 1.33 lbs as the weight and .48 sq ft as the cross sectional area based on the iPad's weight and dimensions from the Apple website. Drag coefficient of 1.28 as determined by Shape Effects on Drag for a flat plate, and finally an altitude of 100,000 feet. That results in terminal velocity 368 feet per second, or 250 miles per hour. Given that there was also a camera and the balloon's remains attached to that, terminal velocity would have been higher, closer to 350 mph if the total weight were around 2.5 lbs.
Last edited by PatrickGSR94; 01-09-2012 at 09:35 AM.
01-21-2012, 10:29 AM #28
The altitude you entered refers to the density of air at that height. Which the NASA calculator assumes as constant.
Once the iPad hits the atmosphere it would slow down due to the increase in air density.
So if you recalculate for the density of air at say 1 mile up you get, 46.185 feet per second. Which makes a lot more sense for this thing surviving.
01-23-2012, 12:32 PM #29