44 WBS Elements RD1 RD2 Sources & Notes Attitude Determination and Control System Mass per Module (kg) 0.20 0.25 Aerospace Propulsion Mass per Module (kg) 0.00 0.00 Aerospace Telemetry Tracking and Command Mass per Module (kg) 0.20 0.25 Aerospace Command and Data Handling Mass per Module (kg) 0.20 0.25 Aerospace Thermal Mass per Module (kg) 0.40 0.50 Aerospace Module Mass (kg) 4.00 5.00 Aerospace Estimated number of modules 1,463,000.00 2,000,000.00 Inferred from Mankins, Sasaki, Pellegrino SBSP In-space Mass (kg) 5,852,000.00 10,000,000.00 Inferred from Mankins, Sasaki, Pellegrino Complexity/risk High 2 elements reflector + PV-RF; Assembly in space Low 1 element PV-RF sandwich Aerospace inferred from Mankins, Sasaki Technology Development Cost $2.4B $2.07B Assuming TRL 4 (35%) for RD1 and TRL 6 (25%) for RD2. NASA OTPS modified, Aerospace inferred from Mankins, Sasaki with Design Maturity Factor and (Brunner & Jack, 2006) PV-RF module Modular sandwich Modular sandwich (no wired signal/power interfaces required between the modules) Mankins, Sasaki Illumination Secondary reflector array ~2-3 suns No additional optical array 1 sun Mankins, Sasaki PV array 1 sided bifacial Mankins, Sasaki Module Initial Cost $1,000,000.00 $1,000,000.00 Analogs of satellite and PV industry Module Manufacturing Learning Rate 0.75 0.75 Aerospace 11/2022 Module Manufacturing Cost ($) $6.9B $8.3B Crawford model learning curve applied to initial cost and number of units. Develop Program Management, Systems Engineering, and Mission Assurance Cost ($) $2.3B $2.6B Aerospace Corporation: Mission PM/SE/MA costs are assumed at 25% of combined Hardware and Technology Development. Total Develop Cost ($) $11.6B $12.9B
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