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Differential air pressure is a term of comparison. It may be stated as "the difference in air pressure between..." and finished from there. Let's look at a sentence and then break it down. "The differential air pressure across the body of the 747 is a cause of concern over the life of the aircraft." A jet at altitude has a pressurized cabin. The outside air pressure is very low. (Think Mount Everest. Almost no one climbs it without suplimental oxygen.) There is a difference between the air pressure inside the cabin and the air pressure outside the cabin. This is an instance of differential air pressure. The differential air pressure puts stress on the body of the plane. When the aircraft is back on the ground, the differential pressure disappears. The alternating application and neutralization of stress across the hull damages the structure over the life of the airframe. The differential pressure is the difference between the pressure of the air in the (pressurized) cabin at altitude and the pressure of outside air at that altitude.
What else can I help you with?
How does differential heating affect air pressure?
Differential heating creates high-and-low-pressure areas, creating wind.
No differential pressure?
In a filter dust collector,if the differential pressure is 0 may be the air exhaust fan is not functioning or the suction pipe is clogged.
Why does air escape from a tire when the valve is opened?
Because, by pressure differential, there is a gas flow from the high pressure tire to the lower pressure environment.
How do you calculate the pressure differential between two points?
To calculate the pressure differential between two points, you subtract the pressure at one point from the pressure at the other point. This difference in pressure is the pressure differential.
Where does low pressured air move to?
Usually a low pressure area is where all the air moves to. A high pressure area is the one that will move- to try to balance the pressure differential.
What does differential heating cause?
Differential heating causes wind because the air over one surface being warmer than the air over another results in different air pressures. Wind is caused by air moving from a high pressure system to a low pressure system. This requires differences in air pressure, which is caused by differential heating.
Why do are airplane windows are smaller than bus windows?
Aircraft windows need to resist severe air pressure changes and pressure differential.
Why does the bottom of a airplanes wing have high air pressure?
Because the air moving above the wing is of lower pressure than the bottom. This pressure differential is what creates lift. Check out Bernoulli's Principle for more information.
How does an airplane stay up in the air?
Winglift.Lift is pressure on the wing due differential air pressure below and above wing. This difference results from the difference in curvature of the wing top and bottom..
How does air pressure move air?
When a sailing boat is sailing into the wind the shape of the sail acts like a plane's wing and differential pressure across the sail propels the boat forward.
How airplane suspended in mid air?
Airplanes are NOT "suspended in mid air" - they move through the air and are supported by 'lift' derived from the differential air pressure above and below their wings.
When the lungs are at rest between breathing cycle the air pressure in the lungs is?
Air goes into or out of the lungs due to differential pressure. On inhalation, the pressure within the lungs is below atmospheric, so outside air rushes in. On exhalation, the pressure within the lungs is above atmopheric, so inside air rushes out. When you stop breathing for the moment at the end of exhalation, or when you transition from inhalation to exhalation at the end of inhalation, there is no air flow, because there is no differential pressure. Assuming that you do not close your larynx, then, when the lungs are at rest, the air pressure in the lungs is the same as atmospheric, and this occurs twice in each complete breathing cycle.
