SPS Concept Development Reference System Report

List of Abbreviations AC ALTERNATING CURRENT ACS ATTITUDE CONTROL SYSTEM ACSS ATTITUDE CONTROL AND STATIONKEEPING SUBSYSTEM AMO AIR MASS ZERO APU AUXILIARY POWER UNIT Ar ARGON BOL BEGINNING OF LIFE CMG CONTROL MOMENT GYRO CR CONCENTRATION RATIO CRM CREW AND RESUPPLY MODULE CW CONTINUOUS WAVE db DECIBEL DC DIRECT CURRENT DDT&E DESIGN, DEVELOPMENT, TEST AND EVALUATION DOE DEPARTMENT OF ENERGY EMI ELECTROMAGNETIC INTERFERENCE EOL END OF LIFE FET FIELD EFFECT TRANSISTOR GaAlAs GALLIUM ALUMINUM ARSENIDE GEO GEOSYNCHRONOUS EARTH ORBIT GFRTP GRAPHITE FIBER REINFORCED THERMOPLASTIC GHz GIGAHERTZ (10^9 CYCLES/SECOND)

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