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An airliner fuselage, such as this Boeing 737, forms an almost cylindrical pressure vessel. Cabin pressurization is a process in which conditioned air is pumped into the cabin of an aircraft or spacecraft in order to create a safe and comfortable environment for humans flying at high altitudes. For aircraft, this air is usually bled off from ...
Aug 23, 2023 · Cabin pressure on a plane is something passengers don't really think about until their ears start popping or an emergency occurs. Thinkstock/Getty Images. Back in the 1930s, aviation manufacturer Boeing came up with a new commercial aircraft, the Model 307 Stratoliner, which featured a game-changing innovation. This model was equipped with an airplane cabin pressure system, enabling the plane ...
- Evolution of The Pressurized Cabin
- Make History
- Stratoliner 75th Anniversary
As early as the 1700’s, scientists were hypothesizing that the air around them was not just empty space, but filled with a fluid-like substance with volume and mass. Two centuries and many scientific advances later, Léon Teisserenc de Bort, a French meteorologist, and aerologist, discovered the existence of two of the atmospheric layers, and named ...
In 1935, the United States Army Air Corps (the predecessor of the US Air Force) contacted Lockheed Aircraft Corporation to request an experimental aircraft capable of extended flights above 25,000’, with a ten-hour flight endurance, for a grand total of $112,197. Two structural engineers at the Air Corps Engineering Division at Wright Field, Major ...
It was introduced 75 years ago, and only 10 were built. Hollywood movie producer and aviation pioneer Howard Hughes bought one of them. But Boeing’s Stratoliner changed commercial aviation. For the first time, passengers could “fly above the weather” at high altitudes because of the airplane’s pressurized cabin. The Stratoliner, the world’s first p...
Some of the hot, high-pressure air, called bleed air, is sent to de-ice wings and other surfaces, some goes to systems operated by air pressure, and some starts its journey to the cabin.
The cabin pressure regulator controls the opening and closing of an aircraft's outflow valve, and – in turn – its proper operation is controlled by computers installed onboard the aircraft. An excellent example is that of the Honeywell cabin pressure control systems. These provide clear advantages such as thrust recovery outflow valve systems.
Jul 30, 2022 · Ambient air is introduced into a compressor, which is usually the airplane's engine. As the air is compressed, it heats up rapidly. This heated air is sent through a cooling unit, like a fuel-air heat exchanger. Through ducting, this air is then introduced into the cabin. A series of over-flow or outflow valves regulate how quickly air is ...
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Jun 22, 2020 · 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. At ground level, the air pressure is a little over 14 pounds per square inch (PSI). When an airplane reaches its typical cruising altitude — usually about 30,000 to 40,000 feet — the ...
