In human spaceflight, a life support system is a group of devices that allow a human being to survive in space. US government space agency NASA, and private spaceflight companies use the term environmental control and life support system or the acronym ECLSS when describing these systems for their human spaceflight missions. The life support system may supply air, water and food. It must also maintain the correct body temperature, an acceptable pressure on the body and deal with the body's waste products. Shielding against harmful external influences such as radiation and micro-meteorites may also be necessary. Components of the life support system are life-critical, and are designed and constructed using safety engineering techniques.
Read more about Life Support System: Human Physiological and Metabolic Needs, Atmosphere, Water, Food, Microbe Detection and Control, EVA Systems, Natural Systems
Famous quotes containing the words life, support and/or system:
“Tell me not, in mournful numbers,
Life is but an empty dream!—
For the soul is dead that slumbers,
And things are not what they seem.
Life is real! Life is earnest!
And the grave is not its goal;
Dust thou art, to dust returnest,
Was not spoken of the soul.”
—Henry Wadsworth Longfellow (1809–1882)
“To suppose such a thing possible as a society, in which men, who are able and willing to work, cannot support their families, and ought, with a great part of the women, to be compelled to lead a life of celibacy, for fear of having children to be starved; to suppose such a thing possible is monstrous.”
—William Cobbett (1762–1835)
“We recognize caste in dogs because we rank ourselves by the familiar dog system, a ladderlike social arrangement wherein one individual outranks all others, the next outranks all but the first, and so on down the hierarchy. But the cat system is more like a wheel, with a high-ranking cat at the hub and the others arranged around the rim, all reluctantly acknowledging the superiority of the despot but not necessarily measuring themselves against one another.”
—Elizabeth Marshall Thomas. “Strong and Sensitive Cats,” Atlantic Monthly (July 1994)