Extraterrestrial Cryogenic Propellants Reliquefaction
A number of space missions are predicated on long-duration extraterrestrial storage of cryogens. These range from the exploration of the lunar surface by means of wheeled vehicles powered by hydrogen-oxygen fuel cells to rocket-powered interplanetary travel using hydrogen alone (nuclear rocket) or hydrogen and oxygen, fluorine or flox as the propellants. These missions involve storage periods up to in excess of one year. Consequently, the development of lightweight, low-boiloff-rate propellant storage systems is a prerequisite to the successful accomplishment of these missions.
KeywordsStorage Tank Lunar Surface Lunar Crust Radiation Conductance Radiator Mass
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