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These cookies track visitors across websites and collect information to provide customized ads. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Atmospheric Realities The atmosphere surrounding Earth stretches to approximately three hundred miles above sea level. Human Transport at Higher Altitudes Since most large passenger jets and turbojets fly between 30, and 43, feet above sea level, pressurization is required; a person would remain conscious without it for less than a minute, as he or she would be experiencing about 4 psi.
How Pressurization Works Pressurized cabins are usually maintained between 11 and 12 psi. Pressurization Myths and Facts Some erroneously believe that cargo holds in passenger jets are not pressurized, and therefore are reluctant to place their pets in the hold. Matthew Johnston. Share this: Twitter Facebook. We use cookies on our website to enhance your experience by remembering your preferences and repeat visits.
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Monroe is committed to customer satisfaction, we strive for Continuous Improvement in our products and our people. Read More. Call Us: Skip to content. Why Cabin Pressurization Is Important Cabin pressurization is important because of the nuances between low- and high-altitude air density. Read More. Call Us: Skip to content. How Cabins Are Pressurized Airplane cabins are pressurized by forcing air into the cabin.
Why Pressurized Cabins Are Necessary Cabins are pressurized to create a safe and comfortable environment for pilots, crew and passengers. More Popular Posts. November 12, Products.
How is Aluminum Metal Anodized? November 11, Products. All airplane cabins are pressurized to simulate the amount of pressure felt at 8, feet. Pressurization happens via the engines, which compress incoming air, heat it up, and then divert some of that hot compressed air to the cabin. Finally, the cooled air is combined with air already in the cabin using a mixer, or manifold. If planes were pressurized at ground level, they would have to be made with heavier materials and use more fuel.
Just like the human body can only survive in a certain range of temperatures, it can only survive in a certain range of pressures. When a plane is ascending and descending, atmospheric pressure changes, and our bodies try to equalize the internal pressure to match the outside environment.
The equalizing process is usually assisted by an air crew ensuring that the cabin is pressurized, but even with that help, many people still feel effects of altitude change through things like ears popping, which happens because your middle ear is trying to equalize pressure with the surrounding atmosphere.
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. According to Dr. Divya Balasubramanian, a doctor of osteopathic medicine in Dallas, ears, sinuses, and mouth cavities most commonly hold manifestations of barotrauma.
Bleeding starts with the ears and nose because those are the smallest places in your body that trap gas; blood can also come out of your oral cavities.
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