1976 NASA SPS Engineering and Economic Analysis Summary

LIST OF ILLUSTRATIONS Figure Title Page 1-1. Solar power satellites ................................................................. 1-3 4-1. SPS program elements................................................................. 4-2 5-1. Solar photovoltaic SPS configuration....................................... 5-2 5-2. Solar photovoltaic SPS configuration options........................ 5-5 5-3. Solar thermal concentrator concept assembly..................... 5-6 5-4. Solar concentrator concept evolution....................................... 5-9 5-5. Nuclear thermal SPS configuration.......................................... 5-10 5-6. Nuclear Brayton cycle SPS schematic.................................... 5-11 6-1. Systems design analysis model ............................................... 6-3 6-2. SPS transportation model........................................................... 6-5 7-1. Electrical efficiency chain ........................................................ 7-2 7-2. Concentration ratio trades........................................................... 7-3 7-3. Trough configuration with concentrator radiators............... 7-6 7-4. Reflector/solar cell configuration options........................... 7-7 7-5. Solar cell description.................................................................... 7-10 7-6. Solar array structural configuration....................................... 7-16 7-7. Comparison of rectangular and elliptical planform geometry.......................................................................................... 7-17

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