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The air is cooled, humidified, and mixed with recirculated air by one or more environmental control systems before it is distributed to the cabin. [1] The first experimental pressurization systems saw use during the 1920s and 1930s. In the 1940s, the first commercial aircraft with a pressurized cabin entered service. [2]
Control panel for a Boeing 737-800 ECS. In aeronautics, an environmental control system (ECS) of an aircraft is an essential component which provides air supply, thermal control and cabin pressurization for the crew and passengers. Additional functions include the cooling of avionics, smoke detection, and fire suppression.
An aircraft cabin is the section of an aircraft in which passengers travel. [1] Most modern commercial aircraft are pressurized, as cruising altitudes are high enough such that the surrounding atmosphere is too thin for passengers and crew to breathe. [2] In commercial air travel, particularly in airliners, cabins may be divided into several parts.
Environmental control and life support system (ECLSS) Responsible for the assembly and operation of systems related to atmosphere control and supply, atmosphere revitalization, cabin air temperature and humidity control, circulation, fire detection and suppression, water collection and processing and crew hygiene equipment, among other areas.
Bleed air in aerospace engineering is compressed air taken from the compressor stage of a gas turbine, upstream of its fuel-burning sections.Automatic air supply and cabin pressure controller (ASCPC) valves bleed air from low or high stage engine compressor sections; low stage air is used during high power setting operation, and high stage air is used during descent and other low power setting ...
Required areas of study in the airframe curriculum include inspection, structures—wood, sheet metal, composite—and fasteners, covering, finishes, welding, assembly and rigging, hydraulics, pneumatics, cabin atmosphere control systems, instrument systems, communication and navigation systems, fuel systems, electrical systems, position and ...
Small business owners should not forget about a rule — currently in legal limbo — that would require them to register with an agency called the Financial Crimes Enforcement Network, or FinCEN ...
An uncontrolled decompression is an undesired drop in the pressure of a sealed system, such as a pressurised aircraft cabin or hyperbaric chamber, that typically results from human error, structural failure, or impact, causing the pressurised vessel to vent into its surroundings or fail to pressurize at all.