Specific characteristics of the vehicles mentioned are found in Table 9-3. Each case assumes that a shuttle can deliver 68 passengers from Earth to LEO and return. TABLE 9-3. DESCRIPTION OF VEHICLES The results of the transportation analysis for the LEO assembled SPS's are given in Figure 9-2; the results for the GEO assembled SPS's are given in Figure 9-3. Several material depots and personnel space stations are required to support the transportation system and assembly in LEO or GEO of an SPS. In the LEO assembly scenario, a construction depot and space station along with OTV propellant, OTV engine, personnel exchange station, and logistics depots are required. In GEO a logistics depot and space station must be attached to each SPS. The GEO assembly scenario requires construction, OTV propellant, OTV engine, and logistics depots in addition to a personnel exchange station in LEO. In GEO, there is a requirement for a construction depot with a space station along with a logistics depot and space station attached to each SPS. Results of depot and space station capacity studies for a LEO or GEO assembled photovoltaic SPS are given in Table 9-4. 9. 2. 3 TRANSPORTATION LOADING AND VEHICLE OPERATIONS An analysis was performed to determine the mass of materials that must flow through the launch sight to build one SPS and operate it for 1 year. For this analysis, a photovoltaic SPS assembled in LEO was chosen along with
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