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- W207865909 abstract "The purpose of this work is to estimate the pump and nuclear reactor pressure vessel masses for a reactor-type decision, between a pressurized water reactor (PWR) and a boiling water reactor (BWR). The main objective is to estimate pump performance, given that its mass must be limited to under 300 kg. The Lunar Prospector spacecraft found water ice at permanently shadowed, 80 K regions inside crater basins at the North and South Poles of the moon. Either a PWR or a BWR would power a nuclear-heated steam rocket, using water from the moon as propellant. A nuclear-heated steam rocket offers an exceptionally simple and presumably inexpensive system to shuttle people and payloads to and from the moon`s surface. Previous work determined the specific power required to develop sufficient thrust for liftoff: Each ton of nuclear rocket engine must deliver at least 150 MW into 1,100 K, or hotter, steam. The scaled pump mass (3,850 kg) for a PWR exceeds budget (300 kg). This implies that the PWR cannot be used unless pump-specific mass can be lowered by an order of magnitude. The scaled pump mass for a BWR would provide acceptable pressure (1.7 MPa)." @default.
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- W207865909 date "1998-09-01" @default.
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- W207865909 title "Pump and pressure vessel considerations for nuclear-heated steam rockets" @default.
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