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Why is it necessary to pressurize air inside of an airplane?
Cabin pressurization is important because of the nuances between low- and high-altitude air density. Air is less dense at high altitudes than low altitudes. Airplanes need pressurized cabins because it ensures passengers, as well as crew members, receive an adequate amount of oxygen in the air they breathe.
Why does air pressure have to be regulated in airplanes and submarines?
A: Airplanes are pressurized because the air is very thin at the altitude they fly. To prevent all of these complications, the cabins of many aircraft are pressurized to near sea level pressure, which makes breathing in an airplane about the same as breathing at sea level.
What happens if an airplane cabin is not pressurized?
So what happens to your body when an airplane cabin is not pressurized? If a cabin crew does not remember to pressurize the cabin, as with the Jet Airways flight, the gases in your body will expand beyond what they are supposed to, rupturing tissues and causing bleeding. These injuries are called barotrauma.
Can a plane flying unpressurized?
The Federal Aviation Administration says that “The ability to take corrective and protective action is lost in 20 to 30 minutes at 18,000 feet and 5 to 12 minutes at 20,000 feet, followed soon thereafter by unconsciousness.” Many commercial planes fly well above that, at around 35,000 feet, and at that altitude, you …
Is the air pressure inside a submarine?
A sub always has a pressure inside that is about equal to the air pressure at sea level (let’s call it “1 atmosphere”). If the outside is also equal to 1 atmosphere there’s no pressure difference and no strain on the shell (hull) of the sub. At 10 meters below the surface, the pressure is 2 atmospheres.
How deep can submarines go today?
What the Navy can tell you is that their submarines can submerge deeper than 800 feet. But they don’t go as deep as the research subs that explore the seafloor.