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Posted: 5/25/2017 3:59:10 AM EDT
[#1]
Quote HistoryQuoted:
Those shitty passenger masks don't do shit. Without pressurization you're not pushing oxygen into the hemoglobin anyways. So breath as much oxygen as you want, you're just gonna exhale it. The pilots masks are pressurized. |
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Posted: 5/25/2017 4:10:41 AM EDT
[#2]
Quote HistoryQuoted:
Those shitty passenger masks don't do shit. Without pressurization you're not pushing oxygen into the hemoglobin anyways. So breath as much oxygen as you want, you're just gonna exhale it. The pilots masks are pressurized. |
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Posted: 5/25/2017 4:14:37 AM EDT
[#3]
Quote HistoryQuoted:
This. My bro was a commercial pilot for 10 yrs and he told me this numerous times. Quote HistoryQuoted:
Quoted:
Those shitty passenger masks don't do shit. Without pressurization you're not pushing oxygen into the hemoglobin anyways. So breath as much oxygen as you want, you're just gonna exhale it. The pilots masks are pressurized. |
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Posted: 5/25/2017 4:44:09 AM EDT
[#4]
Quote HistoryQuoted:
Scotty doesn't know! Quote HistoryQuoted:
Scotty doesn't know! 
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Posted: 5/25/2017 5:33:04 AM EDT
[#5]
Hypoxia, how does it work.
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Posted: 5/25/2017 6:45:39 AM EDT
[#6]
The altitude chamber was fun as hell!
Quick drunk without the hangover. I like the instructions though that they give you, 'then breath normally' Who the fuck is going to breath normally after a rapid decompression and that shit falling from the ceiling? 
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Posted: 5/25/2017 6:50:34 AM EDT
[#7]
Quote HistoryJust like when another diver grabs your main, instead of your octopus. |
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Posted: 5/25/2017 7:08:08 AM EDT
[#8]
Quoted:
No. WTF are you talking about? At altitude the pressure is so low that oxygen won't penetrate the surface tension of your bloods hemoglobin and therefore the blood just flows through your lungs but doesn't pick any oxygen up along the way. The pilots masks pressure allows your blood to saturate with oxygen. This little plastic masks don't do anything but make you feel safe. It also mentioned that during rapid depressurization the water vapor in the air turns to ice instantly, causing a total white out. You literally can't see your hand in front of your face, so good luck finding the mask. |
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Posted: 5/25/2017 7:23:38 AM EDT
[#9]
Who has been at an altitude of 12,000 feet, and did you notice any light-headedness or anything? I've always heard that you can feel 12,000 feet, but I went skiing at Mt. Agassiz and climbed a bit higher than the highest lift, and I never felt different. I just remember getting out of breath a little easier, but I was working hard climbing the deep snow in ski boots and carrying my skis.
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Posted: 5/25/2017 7:31:10 AM EDT
[#10]
Quote HistoryQuoted:
Well, your "Bro" lied. Or, he explained it to you in terms you couldn't understand. |
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Posted: 5/25/2017 7:33:13 AM EDT
[#11]
Quote HistoryQuoted:
Who has been at an altitude of 12,000 feet, and did you notice any light-headedness or anything? I've always heard that you can feel 12,000 feet, but I went skiing at Mt. Agassiz and climbed a bit higher than the highest lift, and I never felt different. I just remember getting out of breath a little easier, but I was working hard climbing the deep snow in ski boots and carrying my skis. |
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Posted: 5/25/2017 7:33:50 AM EDT
[#12]
Quote HistoryQuoted:
Who has been at an altitude of 12,000 feet, and did you notice any light-headedness or anything? I've always heard that you can feel 12,000 feet, but I went skiing at Mt. Agassiz and climbed a bit higher than the highest lift, and I never felt different. I just remember getting out of breath a little easier, but I was working hard climbing the deep snow in ski boots and carrying my skis. |
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Posted: 5/25/2017 7:38:01 AM EDT
[#13]
Quote HistoryQuoted:
I have, no effect other then my cigarettes lasting twice as long. The FAA requires private pilots at or above 12,500 for more than 30 minutes to have air. I did bring an empty 20oz. bottle to the top, and then brought it back to sea level with me, and it was very much crushed. |
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Posted: 5/25/2017 7:46:31 AM EDT
[#14]
My non-scientific observation is that at 1,000ft I get the nicotine dosage I'm used to with one complete cigarette in roughly 3 minutes. At pressure altitudes above 12,000ft it takes me over 7 minutes to smoke a complete cigarette and I feel like extinguishing it half way through. The draws are not noticeably different.
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Posted: 5/25/2017 7:53:51 AM EDT
[#15]
Four of spades... four of spades...
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Posted: 5/25/2017 8:23:34 AM EDT
[#16]
Someone embed please. I'm surprised no one has posted this.
https://youtu.be/kUfF2MTnqAw Supposedly you have mere seconds of consciousness in the event of rapid decompression at 35,000 feet. |
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Posted: 5/25/2017 8:44:19 AM EDT
[#17]
Ive been on a plane that depressurized at altitude. It definitely wasn't a rapid depressurization but other than the sudden dive like we were landing in a hurry. Zero effects.
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Posted: 5/25/2017 9:00:50 AM EDT
[#18]
You need a certain amount of oxygen particles to stay conscious. At higher altitudes there are fewer particles due to the air being thinner. Increasing the percentage of oxygen you breath helps i.e. adding pure oxygen from a mask. At some point even 100% oxygen unpressurized is not enough so it needs to be pressurized.
Those passenger masks add some oxygen helping you to stay conscious and live. You don't really want to starve your brain of oxygen by being tough. You can die. At 41,000 feet you have something like 7 seconds to get your mask on. |
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Posted: 5/25/2017 9:02:08 AM EDT
[#19]
Quote HistoryQuoted:
Who has been at an altitude of 12,000 feet, and did you notice any light-headedness or anything? I've always heard that you can feel 12,000 feet, but I went skiing at Mt. Agassiz and climbed a bit higher than the highest lift, and I never felt different. I just remember getting out of breath a little easier, but I was working hard climbing the deep snow in ski boots and carrying my skis. |
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Posted: 5/25/2017 9:04:12 AM EDT
[#20]
Quote HistoryQuoted:
I read an article years ago in science digest talking about the issues regarding flying at high altitudes. They discussed why pilots masks are sealed. It's because the oxygen is being forced in under pressure, you have to forcefully exhale. At altitude the pressure is so low that oxygen won't penetrate the surface tension of your bloods hemoglobin and therefore the blood just flows through your lungs but doesn't pick any oxygen up along the way. The pilots masks pressure allows your blood to saturate with oxygen. This little plastic masks don't do anything but make you feel safe. It also mentioned that during rapid depressurization the water vapor in the air turns to ice instantly, causing a total white out. You literally can't see your hand in front of your face, so good luck finding the mask. http://aviation-safety.net/database/record.php?id=19840712-0 As for the oxygen not binding with the blood, I don't believe that is related to breathing oxygen under pressure, it is related to the ambient pressure on your body. That's why high-altitude pilots wear pressure suits, because just breathing oxygen under pressure will not actually get the oxygen to your blood. (I can't actually find sources for this one way or the other, but that's what I remember from physiology training) |
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Posted: 5/25/2017 9:05:24 AM EDT
[#21]
Quote HistoryQuoted:
I'm sorta curious as to what happens to your ears, in a sudden de-pressurization. Going from a cabin alt of ~10,000 ft to ~33,000 ft in a few seconds has gotta be pretty painful, no? |
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Posted: 5/25/2017 9:06:12 AM EDT
[#22]
Also, at 41,000 feet it could take a few minutes to get down to an altitude where you can breath. At 10,000 ft/min descent rate, it would take 3 minutes to get to 10,000 ft. You will also be suffering from nitrogen bubbling out of your system. Oxygen reduces your intake of more nitrogen.
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Posted: 5/25/2017 9:06:33 AM EDT
[#23]
Had am ln on air emergency when the masks were deployed. Damn rubber band strap was rotten and broke.
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Posted: 5/25/2017 9:20:26 AM EDT
[#24]
Quote HistoryQuoted:
I'm sorta curious as to what happens to your ears, in a sudden de-pressurization. Going from a cabin alt of ~10,000 ft to ~33,000 ft in a few seconds has gotta be pretty painful, no? But I do remember the loud BANG! And the air turning white. I can't remember how much time they gave us to get our masks on. What really sucked was positive pressure breathing 100% oxygen because if I remember right, the O2 saturated our inner ears or eustachian tubes and gave us all the worst earaches like 2 to 3 days later. EDIT: in addition to the loud BANG! And the air turning white momentarily, all the air in your lungs literally gets sucked out....it felt kinda like falling flat on your back and having the wind knocked out of you. |
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Posted: 5/25/2017 9:37:00 AM EDT
[#25]
Quoted:
the other person is weaker. |
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Posted: 5/25/2017 9:45:23 AM EDT
[#26]
Quote HistoryQuoted:
This. My bro was a commercial pilot for 10 yrs and he told me this numerous times. Quote HistoryQuoted:
Quoted:
Those shitty passenger masks don't do shit. Without pressurization you're not pushing oxygen into the hemoglobin anyways. So breath as much oxygen as you want, you're just gonna exhale it. The pilots masks are pressurized. As flimsy as the passenger masks are, they will keep hypoxia at bay during most decompression scenarios. <--- former ECS engineer for fighter aircraft |
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Posted: 5/25/2017 9:49:33 AM EDT
[#27]
Oxygen gets you high. In a catastrophic emergency, you're taking giant panicked breaths. Suddenly you become euphoric, docile. You accept your fate. It's all right here. Emergency water landing - 600 miles an hour. Blank faces, calm as Hindu cows.
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Posted: 5/25/2017 10:08:21 AM EDT
[#28]
Quote HistoryQuoted:
Who has been at an altitude of 12,000 feet, and did you notice any light-headedness or anything? I've always heard that you can feel 12,000 feet, but I went skiing at Mt. Agassiz and climbed a bit higher than the highest lift, and I never felt different. I just remember getting out of breath a little easier, but I was working hard climbing the deep snow in ski boots and carrying my skis. |
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Posted: 5/25/2017 10:25:57 AM EDT
[#29]
Quote HistoryQuoted:
Oxygen gets you high. In a catastrophic emergency, you're taking giant panicked breaths. Suddenly you become euphoric, docile. You accept your fate. It's all right here. Emergency water landing - 600 miles an hour. Blank faces, calm as Hindu cows. |
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Posted: 5/25/2017 10:30:24 AM EDT
[#30]
Quote HistoryQuoted:
You have less than a minute of consciousness at cruising altitude oxygen levels. So, you know, go first. |
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Posted: 5/25/2017 10:32:52 AM EDT
[#31]
Google Time of useful consciousness. If you are in good cardio shape, you will be at the top of those ranges.
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Posted: 5/25/2017 10:39:42 AM EDT
[#32]
Oxygen gets you high. In a catastrophic emergency, you're taking giant panicked breaths. Suddenly you become euphoric, docile. You accept your fate. It's all right here. Emergency water landing - 600 miles an hour. Blank faces, calm as Hindu cows
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Posted: 5/25/2017 10:40:18 AM EDT
[#33]
Quoted:
the other person is weaker.  Effect of rapid decompression at FL450 |
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Posted: 5/25/2017 10:43:04 AM EDT
[#34]
Quote HistoryQuoted:
Oxygen gets you high. In a catastrophic emergency, you're taking giant panicked breaths. Suddenly you become euphoric, docile. You accept your fate. It's all right here. Emergency water landing - 600 miles an hour. Blank faces, calm as Hindu cows Missed it by five posts. |
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Posted: 5/25/2017 10:53:17 AM EDT
[#35]
Being a NCO in the army is kinda like that
You always take care of yourself FIRST and then help your joes |
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Posted: 5/25/2017 10:56:29 AM EDT
[#36]
Quote HistoryQuoted:
Google Time of useful consciousness. If you are in good cardio shape, you will be at the top of those ranges. The only thing I noticed was that my thinking was slowed a bit. Remember the clipboard of problems, mazes, games, etc they give you to work on when you're in the chamber? I was working my way through them all, and it was only after a bit that I realized that it was taking a little longer for me to read the word problems (I normally blast through those). I figured that was hypoxia, and so I put on my mask, and gangloaded my regulator. It was only then that I looked around the chamber, and noticed that EVERYBODY ELSE had their masks on, and all of them were staring at me. I got on the intercom and said "What?" The chamber attendant said "Uh... you OK there # nine?" I said "yeah, why?" He said "never mind." It really affects people differently. Some people crap out quickly, while others you can hardly tell. They can carry on a conversation long past the time where you'd think they should be perseverating and stupid. |
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Posted: 5/25/2017 10:59:29 AM EDT
[#37]
I remember watching some show where they had a Sherpa (he lived in Utah) along with a bunch of other people. Sherpa was watching people fall out all round him, he was fine, able to do all the problems and games.
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Posted: 5/25/2017 11:03:10 AM EDT
[#38]
Quote HistoryQuoted:
Missed it by five posts. |
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Posted: 5/25/2017 11:03:45 AM EDT
[#39]
I have been on a flight where the masks have dropped.
people don't scream, everyone gets really quiet for a couple of seconds. Very weird. there wasn't an emergency, somebody's child managed to pry a panel open. evidently if one panel opens, they all do. we diverted, put on another plane. have no idea what happened to the family. This was early 80's |
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Posted: 5/25/2017 11:05:37 AM EDT
[#40]
Quote HistoryQuoted:
Those shitty passenger masks don't do shit. Without pressurization you're not pushing oxygen into the hemoglobin anyways. So breath as much oxygen as you want, you're just gonna exhale it. The pilots masks are pressurized. you are misinformed. |
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Posted: 5/25/2017 11:06:51 AM EDT
[#41]
Quote HistoryQuoted:
Who has been at an altitude of 12,000 feet, and did you notice any light-headedness or anything? I've always heard that you can feel 12,000 feet, but I went skiing at Mt. Agassiz and climbed a bit higher than the highest lift, and I never felt different. I just remember getting out of breath a little easier, but I was working hard climbing the deep snow in ski boots and carrying my skis. |
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Posted: 5/25/2017 11:09:43 AM EDT
[#42]
Quote HistoryQuoted:
I remember watching some show where they had a Sherpa (he lived in Utah) along with a bunch of other people. Sherpa was watching people fall out all round him, he was fine, able to do all the problems and games. I don't really get the 10-15 seconds of useful consciousness claims though. I mean the fattest, most out of shape smoker can exhale and not breathe for 15 seconds and not fall out or lose reasoning ability. I don't claim to be a doctor though. |
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Posted: 5/25/2017 11:11:14 AM EDT
[#43]
Quote HistoryQuoted:
The biggest reason pilot masks are sealed and under positive pressure is if there are toxic fumes, you don't want them sneaking into the mask. Same reason they have goggles - it's not just for the possible smoke (that is one reason of course), but you don't want toxic fumes sneaking in through your mucous membranes http://aviation-safety.net/database/record.php?id=19840712-0 As for the oxygen not binding with the blood, I don't believe that is related to breathing oxygen under pressure, it is related to the ambient pressure on your body. That's why high-altitude pilots wear pressure suits, because just breathing oxygen under pressure will not actually get the oxygen to your blood. (I can't actually find sources for this one way or the other, but that's what I remember from physiology training) At 63,000 feet, the pressure is low enough that water, and your blood, will boil at 98*F . |
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Posted: 5/25/2017 11:12:01 AM EDT
[#44]
Quote HistoryQuoted:
I had very little in the way of hypoxia symptoms when I did the altitude chamber. I was the last guy in my chamber group to go on oxygen; No tingling, no shortness of breath, no air hunger, no headache, no dizziness. The only thing I noticed was that my thinking was slowed a bit. Remember the clipboard of problems, mazes, games, etc they give you to work on when you're in the chamber? I was working my way through them all, and it was only after a bit that I realized that it was taking a little longer for me to read the word problems (I normally blast through those). I figured that was hypoxia, and so I put on my mask, and gangloaded my regulator. It was only then that I looked around the chamber, and noticed that EVERYBODY ELSE had their masks on, and all of them were staring at me. I got on the intercom and said "What?" The chamber attendant said "Uh... you OK there # nine?" I said "yeah, why?" He said "never mind." It really affects people differently. Some people crap out quickly, while others you can hardly tell. They can carry on a conversation long past the time where you'd think they should be perseverating and stupid. |
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Posted: 5/25/2017 11:15:41 AM EDT
[#45]
Quote HistoryQuoted:
I saw that. It had zero effect on him. I don't really get the 10-15 seconds of useful consciousness claims though. I mean the fattest, most out of shape smoker can exhale and not breathe for 15 seconds and not fall out or lose reasoning ability. I don't claim to be a doctor though. There is no holding your breath. |
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Posted: 5/25/2017 11:18:08 AM EDT
[#46]
Quote HistoryQuoted:
Unless you have cardiac/pulmonary ailments you aren't dying. People are exposed to high altitudes for  https://www.youtube.com/watch?v=hSrGfElyfVEQuote HistoryQuoted:
Quoted:
Because you'll both die if you do it the other way. If you live you can help others after. People are exposed to high altitudes for https://www.youtube.com/watch?v=hSrGfElyfVEI've known several, and sometimes it's like talking to a California surfer/stoner dude. Brain damage starts to set in. Higher brain function suffers. |
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Posted: 5/25/2017 11:19:55 AM EDT
[#47]
Quote HistoryQuoted:
I saw that. It had zero effect on him. I don't really get the 10-15 seconds of useful consciousness claims though. I mean the fattest, most out of shape smoker can exhale and not breathe for 15 seconds and not fall out or lose reasoning ability. I don't claim to be a doctor though. |
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Posted: 5/25/2017 11:21:26 AM EDT
[#48]
Quote HistoryQuoted:
people climb higher mountains than that without oxygen. Quote HistoryQuoted:
Quoted:
Once again the ones with only PC Flight Sim time make themselves known to GD. |
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Posted: 5/25/2017 11:22:13 AM EDT
[#49]
Quote HistoryQuoted:
people climb higher mountains than that without oxygen. |
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Posted: 5/25/2017 11:24:24 AM EDT
[#50]
Quote HistoryQuoted:
I had very little in the way of hypoxia symptoms when I did the altitude chamber. I was the last guy in my chamber group to go on oxygen; No tingling, no shortness of breath, no air hunger, no headache, no dizziness. The only thing I noticed was that my thinking was slowed a bit. Remember the clipboard of problems, mazes, games, etc they give you to work on when you're in the chamber? I was working my way through them all, and it was only after a bit that I realized that it was taking a little longer for me to read the word problems (I normally blast through those). I figured that was hypoxia, and so I put on my mask, and gangloaded my regulator. It was only then that I looked around the chamber, and noticed that EVERYBODY ELSE had their masks on, and all of them were staring at me. I got on the intercom and said "What?" The chamber attendant said "Uh... you OK there # nine?" I said "yeah, why?" He said "never mind." It really affects people differently. Some people crap out quickly, while others you can hardly tell. They can carry on a conversation long past the time where you'd think they should be perseverating and stupid. I was the last guy to put my mask on too. My clipboard with the worksheet on it was filled out just fine. Maybe the only thing I noticed was my handwriting got worse. I didn't experience any of the graying out with my vision. The aerospace phys guy was hovering over me when I looked around and noticed everybody had their masks on and they were staring at me. Later on, my friends told me my lips were really, really blue. During that initial chamber ride, everybody else got all giggly like they were buzzed/drunk. Of course, ripping some hellacious farts added to the hilarity. Back then I was running a lot at about 7, 258 ft MSL, so that is what I attribute my longevity or length of (non)symptoms to. |
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