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On Tue, 30 Dec 2003 19:43:55 -0800, "G.R. Patterson III"
wrote: Aviation wrote: On the one hand, passengers need to get denser air to breathe but large aircraft have oxygen masks that drop down. [snip] As for your ears, they're already toast. The pressure just dropped from the pressure at 8,000' to that at cruise altitude in a few seconds. Based on what others have written about chamber simulations, it would appear that irreversible ear damage (which is what I would infer as being "toast") is not an inevitable consequence, although. I've no doubt that the sensation from any reversible consequences is not always pleasant . Basically, the pilots need to get their masks on and get the plane down below 25,000' as rapidly as it can possibly be done. The descent to 10,000' can be made a little more leisurely, but not much - there's always someone in the cattle section who panicked and isn't wearing a mask. One aspect that I have not seen addressed in this thread is the fact that most oxygen systems can provide supplemental oxygen for a few minutes only (I dimly recall figures like 3-5 minutes, but that may be inaccurate). The pilots also need to get down to 10,000 feet within that time before everyone's oxygen generators run out. Regards, George ************************************************** ******************** Dr. George O. Bizzigotti Telephone: (703) 610-2115 Mitretek Systems, Inc. Fax: (703) 610-1558 3150 Fairview Park Drive South E-Mail: Falls Church, Virginia, 22042-4519 ************************************************** ******************** |
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