Most air planes are pressurized, because at high altitudes, the air pressure is less than humans can handle, which causes us to black out. Bad vacation when your pilot blacks out at 30,000 feet!
The same pressure as on the ground. Actually they are pressurized to anywhere from 4,000 ft. to 8,900, feet depending on the size and type of aircraft that you're in. Anywhere below 11,000 ft. is considered safe by FAA standards - though the higher the pressurization (the lower to the ground level pressure) is preferable and easier on the brain and body. The actual PSI of the aircraft is generally somewhere between 5.5 and 8.9psi.
Yes - or at least, there was one, a DC-3 conversion: http://www.douglasdc3.com/polair/polair.htm
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There are two operating nuclear power plants in Minnesota:Monticello: A single 613 megawatt boiling water reactor located in Monticello, Minnesota.Prairie Island: A 1,076 megawatt plant with two pressurized water reactors located in Red Wing, Minnesota.
Triangle is still the most common. The shape cuts into the wind with little to no resistance and then spans out to create lift. This also gives the kite direction. Airplanes have the same general shape.
They would suffocate.
The highest altitude is 8,000 ft. But depending on the aircraft, it is usually pressurized to around 6,500 to 7,000 ft.
the cabin could explode or crack
At the high altitudes which airliners fly in, there is less dense. Since air is good for us humans, the cabin is pressurized in order to provide enough air to breathe.
Jet or rocket powered, with a pressurized cabin.
Airplanes need to be pressurized because the atmospheric pressure, at such a high altitude, acts upon your body. Your body is trying to adjust to maintain equal pressure, causing your ears pop. Because your body cannot maintain equal pressure by itself, the airplane makes up for the rest of the pressure that is needed to equalize the atmospheric pressure.
Airplanes are often pressurized. A large window would be excessively difficult and expensive to make it strong enough to not blow out. So they use small windows on airplanes.
Generally yes. Few large commercial airplanes travel under 10,000 feet where you need oxygen or pressurization.
Airplanes often fly at great altitudes, of 10 kilometers or more. People would have serious trouble breathing at that altitude.
It is because an aeroplane's cabin is pressurized, meaning that it is sealed off from the atmosphere. This prevents air escaping and keeps the pressure constant.
The question nowadays is "What ISN'T allowed on airplanes?" Items such as aerosol cans; toothpaste; soda cans; and most (if not all) pressurized cans and aren't allowed on airplanes due to the fact people have miss used them as weapons. Then there's the obvious, guns; knives; sharp metal; any other type of weapon (blade.. etc.)
Only specialized aircraft fly in space - airplanes are not pressurized or shielded the way rockets and the space shuttle are, so they can't go into space.