TABLE VI-D-1-10. VARIABLE EFFICIENCY MPD-ARCJET SYSTEM ASSUMPTIONS JET VELOCITY - 20 KM/SEC TO 80 KM/SEC SPECIFIC IMPULSE - 2040 SEC to 8160 SEC EFFICIENCY INCLUDING PROCESSING - 34% TO 70% THRUSTER MASS MODEL - 106 KG PER KG/SEC MASS FLOW THRUSTER COST MODEL - $500/KG PROCESSOR MASS MODEL - 1 KG/KWe PROCESSOR COST MODEL - $100/KWe SPS MASS MODEL - 20,000 METRIC TONS (44M LB) SPS ON-BOARD POWER - 4 GW SPS GROUND POWER - 2.5 GW SPS COST - $2 BILLION
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