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As an airplane climbs higher in the atmosphere, air pressure, both outside and inside an unpressurized airplane, decreases. Reduced air pressure causes less oxygen to be forced through membranes in the lungs and into the blood stream of crew and passengers, resulting in oxygen deprivation or "hypoxia". Use of a higher concentration of oxygen can counter act this effect to an altitude where use of even 100% oxygen will not provide enough oxygen to pass into the blood stream. Use of a pressurized mask or cabin pressurization is required.

Pressurized aircraft pump outside air into the cabin by use of a turbocharger or supercharger in piston powered airplanes or by directing compressed air from the front, compressor stage, of a turbine (jet) engine. An outflow valve constricts the flow of air escaping from the cabin, resulting in a higher cabin air pressure. On commercial jets, the cabin is generally restricted to a pressure that equates to an altitude of 8,000 feet above sea level, or lower, while at cruise altitude.

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Q: Air pressure in a airplane
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Related questions

Is the air pressure in a flying airplane greater that outside the flying airplane?

In a commercial airliner flying at cruising altitude, the air pressure inside the airplane is considerably higher than the air pressure outside. The air pressure outside is too low for people to breathe comfortably, so the interior is pressurized.


What happens when your airplane takes off from an airstrip on the ground and rises 30000 feet into the sky what happens to the air pressure on the outside of the airplane?

As the airplane ascends to 30,000 feet, the air pressure outside the airplane decreases. This is because air pressure decreases with altitude due to less air molecules exerting pressure on the aircraft. The difference in pressure between the inside and outside of the airplane is managed by the aircraft's pressurization system to ensure a comfortable environment for passengers and crew.


When you are landing in an airplane does the air pressure increase or decrease?

When landing in an airplane, the air pressure typically increases as the aircraft descends closer to the ground. This is because the air becomes more compressed due to the decrease in altitude, resulting in higher air pressure inside the cabin.


Why does a bottle get crumpled up while in an airplane?

it is air pressure


Why does the air pressure above an airplane wing diff from the pressure below it?

The air pressure above the wing is lower because the air traveling faster over the curved top surface creates lower pressure compared to the slower-moving air below the wing. This pressure difference generates lift, allowing the airplane to fly.


What type of air is above an airplane wing when it is flying?

The air above an airplane wing in flight is at lower pressure than the air below the wing. Hope this helps.


What are the forces that act an airplane in flighht?

Gravity , wind and air pressure.


What happens when air above an airplane wing is moving faster than air below an airplane wing?

When the air above an airplane wing moves faster than the air below it, a pressure difference is created. This pressure difference generates lift, as the higher pressure below the wing pushes the aircraft upward. This is known as Bernoulli's principle, where increased air speed above the wing results in decreased pressure and lift.


What makes an airplane lift up into the air?

The air under the plane's wings exerts pressure.


How does bernoulli's principle keep airplanes in the air?

Bernoulli's principle states that as air speed increases, air pressure decreases. This principle is applied in airplane wings, which are designed to create a pressure difference between the upper and lower surfaces. This pressure difference generates lift, allowing the airplane to stay in the air.


What defines low air pressure and where is low air pressure typically found?

Low air pressure refers to a decreased atmospheric pressure compared to the surrounding area. It is typically found in regions of high elevation, such as mountain tops, or in weather systems like cyclones and hurricanes.


If there is a bag of chips on airplane why does it puff up while in flight?

Air pressure.