Oxygen is stored as a supercritical fluid to maximize density and save storage volume in spacecraft.
the verdict
SUPPORTED
the evidence backs this
confidence 75/100
Spacecraft life support and fuel cell systems utilize supercritical oxygen storage to maintain high fluid density while avoiding the handling and phase challenges associated with traditional liquid or high-pressure gas storage.
Evidence for · 2
Density and Temperature Gaging of Supercritical Hydrogen and Oxygen for the Apollo Fuel Cells
1964 · cited by 0
Paper [3] confirms the historical use of supercritical oxygen storage in spacecraft, such as for the Apollo fuel cells, specifically detailing the density gaging methods used in spherical tanks.
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More for · 1
Development of an advanced rocket propellant handler's suit.
2001 · cited by 0
Paper [4] explicitly discusses storing air and oxygen as a supercritical gas to achieve high-density storage and avoid the problems associated with liquid or high-pressure gas storage in aerospace and life support applications.