Solar Power Satellites: The Emerging Energy Option

applications areas assessment CDEP construction cost developing countries economic effects efficiency energy conversion energy sources engineering environment environmental evaluation experiments facilities financing flight frequency fuel future geostationary orbit global heat helium-3 increase industrial INTELSAT ionosphere laser low Earth orbit lunar materials mass driver microwave beam microwave power microwave power transmission mission module Moon Moscow Aviation Institute NASA National needs nuclear operation options organization outer space p-n junction payload photovoltaic potential power plant power transmission production programme propellant radiation receiving antenna rectenna rocket SAPA satellite power system Science shuttle societal solar cells solar energy solar power satellite space power systems space segment Space Station Space Studies Institute space transportation spacecraft specific SPS concept SPS system structure supply t/yr technical telecommunications terrestrial thermal thousand million tion United utility World