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In short they don't.

Small light unpressurised aircraft fly relatively low, so the air pressure is acceptable. Large aircraft (heavy jets etc) use a pressurised hull, air is pumped into the cabin which is kept at an acceptable density.

This is why you hear about explosive decompression, and why aircraft flying at high altitude have oxygen masks which drop from the cabin roof for each passenger in the event of decompression.

Without them you would die of oxygen starvation.

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Which altitudes would have the lowest air pressure and why?

The highest altitudes have the lowest air pressure. Air pressure increases as altitude decreases. Above sea level is lower pressure; below sea level is higher pressure.


What happens to you if you are sucked out of a plane during decompression?

If you are sucked out of a plane during decompression, you would likely experience a sudden drop in air pressure and temperature, leading to rapid loss of consciousness due to hypoxia and asphyxiation. The extreme conditions at high altitudes would make survival highly unlikely.


What is cabin pressurization?

"Cabin Pressurization" refers to the process of increasing the air pressure in airplane cabins about ambient. In and before WW-2, most planes didn't have this capability, so they were limited to roughly 29,000ft above sea level, where there's barely enough oxygen to support life. Later, O2 systems were added to planes, but the low pressure created a variety of medical problems (barotrauma). With the B-29 (I believe), the ability to pressurize the entire cabin of the plane came into play, which raised the operating ceiling of the plane to well about 30,000ft. Nowadays, most passenger jet equipment pressurizes to .5 atmosphere (7.35PSI) as a bare minimum, and can operatre above 38,000ft. Military craft can of course operate at even higher altitudes.


Is the air pressure of a aircraft the same as the air pressure outside above and below?

No, the air pressure inside an aircraft is regulated to be at a comfortable level for passengers, which is usually lower than the air pressure at high altitudes. The difference in pressure is controlled by the aircraft's pressurization system to maintain a safe and habitable environment inside the cabin.


Why ice melts slowly at higher altitudes?

Ice melts more slowly at higher altitudes because the air is thinner and therefore there is less pressure pushing down on the ice, reducing the rate of melting. Additionally, colder temperatures are typically experienced at higher altitudes which also slows down the melting process.

Related Questions

Why is an airplane pressurised when flying at a high altitude?

Airplanes are pressurized at high altitudes because the air pressure outside the cabin decreases significantly, making it difficult for passengers to breathe comfortably and risking hypoxia. Pressurization ensures a safe and comfortable environment by maintaining a stable air pressure and oxygen levels similar to those experienced at lower altitudes. This helps passengers and crew avoid altitude-related health issues while allowing the aircraft to operate efficiently in the thinner atmosphere.


How swallowing relieves the pain in the ear during the rapid ascent or descents of the airplane?

Releases the pressure built up at different altitudes.


Where would a person experience the least atmospheric pressure?

A person would experience the least atmospheric pressure at high altitudes, such as on top of a mountain or in an airplane flying at high altitude.


What does 'aeroplanes are often pressurised'mean?

this means that the air outside the aeroplane is too thin for us to breathe and the air has to be pressurised in the aeroplane. that is why the aeroplane has masks above your seat so if the air becomes to thin the air coming through the mask is the right for you to breathe.


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

It increases. In an unpressurized airplane, the pressure increases because the air is denser at lower altitudes. In a pressurized airplane, the pressure increases both because the pressure must be equalized before the doors can open and because the hull is not designed to withstand an outside pressure higher than the inside pressure.


What is airplane cloud?

when jet air craft travels at high altitudes, the air gets condensed due to variation in atmospheric pressure as well low temperature.


Why is an airplane cabin air pressurized?

At altitudes above 10,000 feet there is not enough air for humans to breathe. Aircraft cabins are pressurized so the pressure is equal to that at about 7,000 feet. Commercial airliners fly at altitudes up to 40,000 feet.


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.


Is air pressure higher at higher altitudes?

Yes, air pressure is lower at higher altitudes.


Why do airplanes need to be pressurized for passenger safety when flying high in the atmosphere?

An airliner might fly at 36,000 feet above sea level, which is a mile higher than the summit of Mount Everest. The air is so thin at this altitude that you'd pass out in 20-30 seconds from a lack of oxygen if the airplane were not pressurized. The only way to get around that is to either make passengers wear oxygen masks or pressurize the airplane so that the air is about as thick as it is on the ground. Most people aren't keen on wearing oxygen masks, so pressurization is the usual choice today.When up in the altitude, atmospheric pressure goes down. In order to breathe in that altitude the cabin has to pressurized.


Why passengers of airplane are provided with chocolates?

They are not always provided with chocolate. More common is a hard candy to help you swallow to adjust your ear pressure from changing altitude.


An airplane attempting to fly higher than 300000 feet will?

An airplane attempting to fly higher than 300,000 feet will encounter significant challenges, including extremely low atmospheric pressure and temperature, which can affect engine performance and structural integrity. Additionally, this altitude exceeds the operational limits of conventional aircraft, which are designed for commercial flight typically up to around 40,000 feet. At such extreme altitudes, specialized aerospace vehicles, like spaceplanes or spacecraft, are required to operate effectively. Furthermore, the lack of oxygen at these heights necessitates life support systems for crew and passengers.