Abstract
Earth provides all the necessary conditions for a wide variety of life forms to survive, and life is present in even the least hospitable parts of the planet. But human life can survive only in conditions that allow our bodies to function properly.
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Notes
- 1.
Partial pressure refers to the fraction of the total pressure that is accounted for by a particular gas in a gaseous mix.
- 2.
The term “psid” means a differential or "delta" pressure across a boundary, in this case of 1.5 psi.
- 3.
Unless mission-specific payload constraints forced to change this interval.
- 4.
The worst fire in space occurred aboard the Mir space station in 1997, when NASA astronaut Jerry Linenger was one of six crew members present.
- 5.
Often cryogenic oxygen and hydrogen are referred to as “cryos”. As a result, flight controllers, instructors and crews refer to cryo systems, cryo tanks, and so on.
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Sivolella, D. (2014). Heart and lung of the Orbiter: the environmental control life support system and electrical control system. In: To Orbit and Back Again. Springer Praxis Books. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0983-0_7
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