51 • Develop spacecraft shielding • Perform mission support services of program management, systems engineering, and mission assurance The following is a list of all WBS Elements supporting this phase, including how they compare to both design reference systems. Note that WBS Elements map to either the components of this phase or to the specifications which serve as inputs to the components. Table 11. Summary of all WBS Elements in the Operate ConOps Phase The above WBS elements were used to derive the cost of mission operations and data analysis to operate during the service lifetime, as well as ground system costs and spacecraft shielding costs for each design reference system. Estimating costs for Mission Operations and Data Analysis – Operations: The above assumption of $1.2M/month was applied over the course of the SBSP systems’ assumed 30 years of operation. Estimating costs for Ground System: Aerospace derived costs for ground systems based on analogies of U.S.-based solar array farms. They evaluated 12 solar farms for cost estimates based on land use and ground-based large antenna arrays. We applied these results to the Innovative Heliostat Swarm without modification, and applied the scaling factor for the Mature Planar Array, which requires five receivers. WBS Elements RD1 RD2 Sources RF frequency (GHz) 2.45 5.8 Aerospace Diameter ground rectenna (km) receptor 6 4 Aerospace derived from Mankins, Sasaki. Operational lifetime (years) 30.00 30.00 Capacity factor (% of year generating power) 0.997 0.6 Mankins, Sasaki Hours in a year 8760 8760 Lifetime kWh 533,166,365,206.45 531,368,057,222.62 Operations cost ($/year) 14,400,000.00 14,400,000.00 Mission Operations & Data Analysis - Operations Cost ($) $432,000,000.00 $432,000,000.00 Aerospace, NASA OTPS derived Ground System cost ($) $3.1B $8,27B Aerospace derived from solar farms and very large arrays. We assume RD2 requires 5 rectennas. PM/SE/MA of spacecraft shielding ($) $49,2M $133.25B Spacecraft Shielding cost ($) $197,000,000.00 $533,000,000.00 Aerospace Total cost of Operations ($) $3.8B $9.36B
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