1976 NASA SPS Engineering and Economic Analysis Summary

8-1. SPS ground system concept........................................................ 8-3 8-2. 9 dB system rectenna.................................................................... 8-5 8-3. Solar power systems, 9 dB RF ground distribution pattern (1 km transmit antenna) ..................... 8-6 9-1. United States resources compared to projected demand through the year 2000 .......................... 9-4 9-2. LEO assembly and operations and maintenance of the SPS with one on-line per year for 30 years............ 9-9 9-3. GEO assembly and operations and maintenance of the SPS with one on-line per year for 30 years... 9-10 9-4. HLLV operational flow diagram................................................ 9-13 9-5. Shuttle operational flow diagram ............................................. 9-14 9-6. OTV operational flow diagrams................................................ 9-15 9-7. SPS construction schedule, one per year for 30 years . . 9-18 9-8. Array construction jig sequence ............................................. 9-19 9-9. SPS assembly................................................................................... 9-20 9-10. SPS assembly timeline................................................................. 9-21 9-11. Fabrication module design concept.......................................... 9-24 9-12. SPS assembly crew....................................................................... 9-26

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