Pressure suit
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Gordon Cooper in a helmet and pressure suit,
A pressure suit is a pressurized suit worn by high-altitude pilots who may fly so high that even breathing pure oxygen at surrounding pressure would not provide enough oxygen for them to function: see hypoxia. One type of pressure suit is a spacesuit, which is designed to operate in complete vacuum. Pressure suits are also used to provide mechanical loads simulating gravity for long trips in micro-gravity, such as aboard a space station. The Penguin prophylactic body-loading suit has been in use since 1978 by Soviet and now Russian cosmonauts.[1]
Joe Walker in an early Air Force partial pressure suit
References
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