42 For a descriptive summary of the full lifecycle of SBSP systems, a description of each ConOps phase is described in Table 7. Note that the Develop ConOps phase includes technology development and manufacturing of bus hardware for the Planar Array design reference system. Table 7. Functional Decomposition of Design Reference Systems for the Ground-Based Segment Ground-Based Segment Functional Step Parameter RD1 RD2 Source Receive Rectenna Array Reception Efficiency 0.78 0.78 Rodenbeck et al. Diameter ground rectenna (km) receptor 6 4 Inferred from Mankins, Sasaki Convert on Ground DC to DC Conversion Efficiency 0.9 0.9 Rodenbeck et al. Deliver Capacity factor (% of year generating power) 0.997 0.6 Mankins, Sasaki Power delivered (MW) 2028.791344 2021.948467 Rodenbeck et al. Table 8. Description of Each ConOps Phase Space-Based Segment Illumination Secondary reflector array ~2-3 suns No additional optical array 1 sun Mankins, Sasaki Solar Cell Efficiency 0.35 0.35 Rodenbeck et al. Convert in Space DC to DC Conversion Efficiency 0.9 0.9 Rodenbeck et al. DC to RF Conversion Efficiency 0.7 0.7 Rodenbeck et al. Transmit Antenna Emission Efficiency 0.9 0.9 Rodenbeck et al. Atmospheric Travel Efficiency 0.98 0.98 Rodenbeck et al. Beam Collection Efficiency 0.95 0.95 Rodenbeck et al. RF frequency (GHz) 2.45 5.8 Mankins, Sasaki ConOps Phase Description Develop Research and develop technologies Manufacture SBSP module hardware Perform project management, systems engineering, and mission assurance Assemble Manufacture servicers Launch SBSP modules and servicers to LEO Refuel launchers in LEO for orbital transfer to GEO
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