NASA 2024 Space-Based Solar Power

11 Table 2. Key Input Parameters Key Input Parameter Value Source and Rationale Starship launch cost ($) $100M, 15% block buy discount 2013-2022 36% launch cost decrease, Falcon Heavy cost of $1500/kg to 2030s. Scale of launches may offer discount. Reuses of launch vehicle (does not include payload Starships traveling to GEO) 100 SpaceX states most components of Falcon 9 may be reused 100 times, but some elements must be replaced after 10 uses. New Glenn claims 25 reuses. 100 reuses = 4 times the state of practice. Orbital transfer method 12 refuel launches in LEO 1 month refuel time 2 months travel to GEO Blue Origin Fed’n, LLC; Dynetics, Inc.-A Leidos Co., supra.. Does not consider cryogenic boiloff. First order delta-v. Launches per year 104 Assuming two launches per week. Falcon 9 currently launching about 1.5x/week. Manufacturing learning curves 85% for servicer 75% for modules 90% for debris vehicles The Aerospace Corporation estimates based on aggregate manufacturing sector data. First unit costs ($) $1B for servicer $1M for SBSP modules $500M debris vehicles The Aerospace Corporation estimates based on satellite and solar cell industry and OSAM-1 costs. Solar cell efficiency 35% NASA assessment of Smallsat technology. Hardware lifetime (years) 10 The Aerospace Corporation estimates. System lifetime 30 The Aerospace Corporation estimates. Initial system upmass (kg), number of modules 5.9M (RD1), 1.46M 10M (RD2), 2M Inferred from Mankins, Sasaki, Pellegrino. Ground rectenna 6km diameter (RD1) 4km diameter, 5 sites (RD2) The Aerospace Corporation assessed costs of analogs: solar power plants and large antenna arrays. Operations cost 1.2M/month Assumes autonomous operations capability. Significantly less than today ~500k/year per satellite. Assembly time per module (minutes) 40 (RD1), 38 (RD2) The Aerospace Corporation estimates based on Orbital Express and ISS analogs.

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