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a complex of technical, physicochemical and biological means ensuring the creation and maintenance of the necessary conditions for human life (oxygen, water, nutrients, removal of harmful metabolic products, etc.) in isolated habitable structures (eg, in submarines, spaceships , orbital station.
The life support system is also used in manned spacecraft missions.
In unusual space flight conditions (vacuum, radiant heat exchange, ionizing radiation) a person must be in a closed hermetic compartment of a spacecraft. In the habitable compartment it is necessary to create conditions for ensuring the normal existence and work of a person. These conditions must be maintained during the entire flight, feeding substances that are consumed by a person into the compartment and removing his metabolic products. The spaceborne systems of the spacecraft (CLA), which solve these problems, are called life support systems (LSS).