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Well a simple answer would be that if a plane is not pressurized, on high altitudes or just very high in the sky, the plane will expand like a balloon and if it expands to much, big problems happen and I don't really know how it is pressurized but the air inside the plane is usually very different than the air outside the plane, at high altitudes.
What else can I help you with?
How do airplanes protect people from the decreased air pressure when flying at high elevations?
When flying at hight altitudes (+12,000FT) planes pressurize the cabin so passengers can stay conscious without wearing oxygen masks.
What is the word origin of pressurize?
pressure..!
Does the Jeep Compass 2012 have a pressurize fuel system?
yes
Why are airplane doors and windows completely sealed?
Modern jet airplanes fly at high altitudes, where there is less air and therefore less oxygen. Aircraft cabins are pressurized so that pilots and passengers can have enough oxygen to breathe. There is a high air pressure inside the cabin because outside air (and oxygen) is forced into the cabin by the engines in order to pressurize the inside of the airplane, and this gives people enough oxygen to breathe. This is only possible because the airplane is sealed; if the windows and doors were open, the engines wouldn't be able to pressurize the cabin.
Why shouldn't technician use oxygen or compressed air to pressurize appliances to check for leak?
Using oxygen or compressed air to pressurize appliances can be dangerous because they are highly flammable and may lead to explosions or fires if they come into contact with a spark. It is safer to use inert gases like nitrogen to pressurize appliances for leak checking to prevent any potential hazards.
Are jets really airplanes?
Yes, jets really are airplanes but they are faster airplanes.
Are airplanes and gliders the same?
All gliders are airplanes, but not all airplanes are gliders.
Why are airplanes the greatest?
airplanes are cool
Are airplanes jets?
Yes, jets are airplanes but they are called supersonic airplanes.
Are airplanes aircraft?
Yes, airplanes are aircraft. However, not all aircraft are airplanes. Helicopters, blimps, and balloons are aircraft- but they are not airplanes. Airplanes are generally fixed wing machines that move through the air.
Where are airplanes kept?
Airplanes are kept in hangars.
Did Victorians have airplanes?
No, there were no airplanes in the Victorian era.
