CONTENTS I INTRODUCTION ................................................................................. 1-1 II CONCLUSIONS................................................................................. H-l III PROGRAM REQUIREMENTS .................................................................... III-l A. Projected Energy Demand ....................................................... III-l B. Implementation Scenarios ....................................................... III-l IV POWER STATION.............................................................................. IV-1 A. System Analysis.................................................................... IV-2 1. Efficiencies.................................................................... IV-2 2. MPTS/MRCS Analysis .......................................................... IV-2 3. Orbit Considerations ...................................................... IV-5 4. Configurations................................................................. IV-9 5. Mass Properties............................................................. IV-11 B. Solar Energy Collection System .............................................. IV-15 1. Solar Array.................................................................... IV-15 2. Power Distribution .......................................................... IV-17 3. Structure....................................................................... IV-18 4. Attitude and Orbit Control ............................................. IV-19 5. Instrumentation, Control and Communications ..... IV-21 6. Maintenance Station ....................................................... IV-21 - C. Microwave Power Transmission System .................................... IV-22 1. Antenna Array............................................................... IV-22 2. Microwave Generators ..................................................... IV-22 3. Subarrays...................................................................... IV-22 4. Phase Control ............................................................... IV-23 5. Pointing Control ............................................................ IV-23 6. Power Distribution ........................................................ IV-25 7. Structure...................................................................... IV-26 8. Rotary Joint.................................................................. IV-26 9. Thermal Control ............................................................ IV-28 D. Microwave Reception and Conversion System ....................... IV-28 1. Rectenna......................................................................... IV-28 2. Grid Interface............................................................... IV-29
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