There was just a thing on the history channel about some early attempt to reach the sumit of everest and they said that over 16,000 feet the body starts to deteriorate. Not sure, however, whether it's due to lack of oxygen or the low temperature or the lack of air pressure or a combination of all of them plus other variables.Originally posted by chroot
Very few people, if any, can survive at 25,000+ feet with no external oxygen supply. Some people may be able to survive on as little as 0.10 atmospheres partial pressure of O2, but probably not for long.
Aircraft that fly at high altitudes uses turbines to compress the intake air. See "turboprop" and "turbojet" engines.Originally posted by Pawel
One thing that has not been mentioned with the altitude argument, is that if you think about breathing engines of aircraft that require oxygen to burn fly at very high altitude. so my understanding is that oxygen does not need to be plentiful at all for a decent combustion, i do also take the assumption that aircraft move very fast so they'll cover more particle space.
People who live at altitude are healthier? Do you have any research to support this claim, or is it just speculation?People who live in higher altitude are healthier as the body goes through more stress so they generate into much hardier systems. Also taking in effect the geography is more rugged and requires effort, so they don't get time to catch the bus and chill out smoking a cigarette while the wind blows it out every 20seconds.
Go to www.google.com and type in "25000 feet in meters."can someone translate 25,000ft in metres quickly.. i couldn't bother searching it on the net..
9000 m is 27,000 feet. Almost everyone on earth will die at those kinds of pressure altitudes. Most people need oxygen to survive above 15,000 feet or so.however if you talk in metres from 4000m->6000m it's no problem. Even everest being almost 9000m you can still sustain yourself without problems.
Don't be too offended by me taking away some oxygen from some of your idle views. I'm talking about standard jet engines, yes they do compress air by the rotary mechanics, however at the burn rate the oxygen levels are minimal in that altitude. So nonetheless it's impressive to note that air breathing engine that need oxygen do so well at such altitudes.Originally posted by chroot
Sorry, Pawel, but I have to take offense to just about everything you've said here.
Aircraft that fly at high altitudes uses turbines to compress the intake air. See "turboprop" and "turbojet" engines.
common understanding, p.e. knowledge & witness to seeing people in higher altitudes show they are more robust. Tibetans have a good record of lifespan & health in comparison. Like I mentioned before they need to do more work due to geography, air etc. continually excersizing & a cleaner exchange of air. Athletes from higher altitudes also portray much better performance while in lower altitudes as they thrive in richer oxygen as their bodies are adjusted to lower levels 'thin air'.People who live at altitude are healthier? Do you have any research to support this claim, or is it just speculation?.
many people have climbed mount everest free of respiratory equipment which reaches close to the altitude u have indicated being almost impossible for a person.
9000 m is 27,000 feet. Almost everyone on earth will die at those kinds of pressure altitudes. Most people need oxygen to survive above 15,000 feet or so.