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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.
What else can I help you with?
Why are airplanes pressurized?
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!
1 psi is equal to how much kgfcm2?
"1 psi is equal to how much kgf/cm2?" since, 14.696 psi is equal to 1.033 kgf/cm2 so 1 psi = 0.070291 kgf/cm2
What is meant by 4000 psi of concrete?
there is no such thing. psi is how much oxygen is in a certain amount of space (mostly used for deep divers
What is the correct suction pressure when charging a freezer using Refrigerant 134a?
Negative 30 psi should do it.
How much would 1 psi be if it was spreaded over an area of 0.5 Sq Ft?
0.5 Sq Ft is one half of a square foot. A square foot is an area 1 foot long by one foot wide. A square foot can also be described in inches instead, so the area of one square foot is 12 inches long by 12 inches wide, or 144 square inches. 0.5 Sq Ft is half a square foot, and is equal to 144 square inches multiplied by 0.5, or one half. So half a square foot equals 72 square inches. 1 psi is one pound per square inch. If you spread 1 psi over an area of 72 square inches, you divide the pressure quantity by the area quantity: 1 psi divided by 72 square inches = 1/72 psi, or 0.0139psi.
Why are aeroplane cabins pressurized?
Airplanes often fly at great altitudes, of 10 kilometers or more. People would have serious trouble breathing at that altitude.
Why are submarines cabins pressurized?
To keep water from leaking in.
Why are airplane cabins pressurized?
Airplane cabins are pressurized because humans cannot breath at a very high elevation.Aircraft are pressurized to allow them to fly higher. Without pressurization, the amount of oxygen in the air would not be sufficient for humans to breathe.
What was the breakthrough technology introduced by Boeing 307 stratoliner in 1940?
Pressurized Cabins
Why do you need to breathe faster at the top of a tall mountain?
the air is thinner the higher up you go so it is harder to breathe. That's why there are pressurized cabins on airplanes because you wouldn't be able to breathe without the pressure keeping the air inside
What would happen to a passenger if airplanes are not pressurized?
They would suffocate.
Why do airplanes submarines and spacecraft have pressurise cabins?
To protect the occupants from extreme pressure.
How are air craft cabins pressurized?
Pressure is created in the engines and/or APU as "bleed air" and enters the cabin.
What altitude are commercial airplanes pressurized to?
The highest altitude is 8,000 ft. But depending on the aircraft, it is usually pressurized to around 6,500 to 7,000 ft.
How are the cabins of jet planes pressurized?
An airplanes cabin is pressurized with what is called "bleed air", air that is siphoned out of the compressor chamber of the engines. The air is directed through duct work to the belly of the plane, where it is filtered, cooled, then circulated in the cabin. Equal amounts of air are siphoned off each of the engines. If one engine should fail, the other engine(s) provide the bleed air.
Why don't helicopter cabins have to be pressurized?
Helicopters don't generally fly high enough for cabin pressurization to be necessary.
Why must airplane cabins be pressurized?
Because at altitudes above 10,000 feet there is not enough air for humans to breathe. Aircraft cabins are pressurised so that the internal pressure is equal to that at about 7,000 feet.
