Mathematics
Scientific paper
Aug 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987ssps.reptq....k&link_type=abstract
Unknown
Mathematics
Economic Analysis, Solar Energy, Solar Generators, Solar Thermal Electric Power Plants, Economic Factors, Life Cycle Costs, Logistics, Mathematical Models
Scientific paper
A life cycle model of a typical space power system (SPS) in the first half of the next century is described. Inputs for this logistics model are: life cycle duration (100 yr); power level of the SPS at the end of life cycle assumed (500 GW); power level for single SPS unit (5 GW); availability of space power units (90 %); and specific mass (Mg/MW) of SPS as a function of time. A system of 100 operating space power units in geostationary orbit with an output of 500 GW in its 50th year requires in this year a total mass flow of 200,000 T. To operate the system, a crew size in GEO is 600 people. The total mass installed in the SPS is 6 million metric tons. To transport this material to the GEO from Earth and from the Moon, average annual launch rates of 300 for the lunar bus and 340 for the heavy lift launch vehicle during the 50 yr time period are required. The average annual output of the SPS is economically attractive: 2188 TWh at 7.4 mills/kWh.
Koelle Hermann H.
Schulze Markus
Sputek K.
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