Abstract
The technological and economic impact of a large central power station in earth orbit on the cost and performance of future spacecraft and their orbital-transfer systems are examined. The three systems considered for the space central power station are a photovoltaic array, a direct nuclear-pumped laser and a direct solar-pumped laser. It is noted that laser transmitters/receivers will be required to make central power stations feasible. While the remote transmission of power solely to meet the needs of earth orbiting satellites will not be cost-effective in the near future, the remote-power transmission for propulsion of orbital-transfer vehicles promises many cost benefits.
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