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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.
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]
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.
Cabin of a Boeing 737 (Economy class) with typical seating arrangement The British Airways World Traveller Cabin Aircraft cabin control system on board an Airbus A319 "Executive Class" cabin of Boeing 777-300ER operated by Biman. An aircraft cabin is the section of an aircraft in which passengers travel. [1]
The interactions between the components of the ISS Environmental Control and Life Support System (ECLSS) The International Space Station (ISS) Environmental Control and Life Support System (ECLSS) is a life support system that provides or controls atmospheric pressure, fire detection and suppression, oxygen levels, proper ventilation, waste management and water supply.
The CCT-ARS provides seven primary spacecraft life support functions in a highly integrated and reliable system: Air temperature control, Humidity removal, Carbon dioxide removal, Trace contaminant removal, Post-fire atmospheric recovery, Air filtration, and Cabin air circulation.
Bleed air is compressed air taken from the compressor stage of a gas turbine engine upstream of its fuel-burning sections. It is used for several purposes which include cabin pressurisation, cabin heating or cooling, boundary layer control (BLC), ice protection and pressurisation of fuel tanks. [3]
A thermal control system using a mixture of water and ethylene glycol as coolant dumped waste heat from the CM cabin and electronics to outer space via two 30-square-foot (2.8 m 2) radiators located on the lower section of the exterior walls, one covering sectors 2 and 3 and the other covering sectors 5 and 6. [27]