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The Water Cooler
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Malaysia Air Flight 370
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<blockquote data-quote="cody6766" data-source="post: 2446999" data-attributes="member: 26511"><p>Boyle's Law works opposite of that, actually. As altitude increases, pressure decreases. As pressure decreases, volume expands. Rapid D at 45k will give about 30sec of useful unconsciousness for most people not on o2. The dixi cups that fall from the ceiling are automatic and supply that needed o2. I don't know when unconsciousness progresses to death, but I'm pretty sure it takes a few minutes. Also, the pressure changes aren't drastic enough to rupture major organs, but it can cause the bends and ruptured sinuses in folks with bad congestion. I've also never heard of a separately pressurized cockpit, so the pilots would be exposed to the same conditions as the passengers. They would be able to get on o2 at will, but being on o2 wouldn't protect them from the pressure changes.</p><p></p><p></p><p>They wouldn't be able to use their phones anyway. Even if over a field of cell towers, the signal is only good for 3-4 miles. 6000'/mile (NM, anyway) 36-45k' = 6-8 miles high in a metal tube that limits reception/broadcast abilities. Unless the jet was equipped with cell service, nobody could call unless they were lower. .</p></blockquote><p></p>
[QUOTE="cody6766, post: 2446999, member: 26511"] Boyle's Law works opposite of that, actually. As altitude increases, pressure decreases. As pressure decreases, volume expands. Rapid D at 45k will give about 30sec of useful unconsciousness for most people not on o2. The dixi cups that fall from the ceiling are automatic and supply that needed o2. I don't know when unconsciousness progresses to death, but I'm pretty sure it takes a few minutes. Also, the pressure changes aren't drastic enough to rupture major organs, but it can cause the bends and ruptured sinuses in folks with bad congestion. I've also never heard of a separately pressurized cockpit, so the pilots would be exposed to the same conditions as the passengers. They would be able to get on o2 at will, but being on o2 wouldn't protect them from the pressure changes. They wouldn't be able to use their phones anyway. Even if over a field of cell towers, the signal is only good for 3-4 miles. 6000'/mile (NM, anyway) 36-45k' = 6-8 miles high in a metal tube that limits reception/broadcast abilities. Unless the jet was equipped with cell service, nobody could call unless they were lower. . [/QUOTE]
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