Results of this analysis show no appreciable difference between SPS and LPS cost projections for the very preliminary LPS model chosen. The impact of LPS model refinement, reexamination of operating frequency selection, advances in automation and system maturity including orbital reflector options offer a significant opportunity to reach highly competitive if not clearly economically superior power systems. We believe that all the research and development necessary to understand, adequately cost out and perform a demonstration of the Lunar Power System can be done expeditiously on Earth prior to a return to the moon. A modest systems study of the Lunar Power Concept, which takes into account the unique resources and environment of the moon, would very likely justify definitive experiments and analyses leading to a lunar power program. REFERENCES 1. J.D. Blacic, Mechanical Properties of Lunar Materials under Anhydrous, Hard Vacuum Conditions: Applications of Lunar Glass Structural Components, Proceedings of the Lunar Base Symposium (29—31 October 1984, Wash. D.C.), organized by Lunar and Planetary Institute and Code SN — Johnson Space Center, Houston, TX; also available from author— MS-C335, Los Alamos Nat. Lab., Los Alamos, NM 87545. (In press.) 2. E. Bock, Lunar Resources Utilization for Space Construction, study by General Dynamics Corp, for NASA, contract NAS9-15560. 1979. 3. D.L. Browning, Large Space Structures in Space Industrialization, Vol. II, pp. 55-123, 226, B.J. O'Leary, ed., CRC Press, Boca Raton, 1982. 4. Cal Space, Automation and Robotics for the National Space Program by The NASA Space Station Automation and Robotics Panel, a Study for the Congress of the United States conducted by the California Space Institute of the University of California, Steering Committee. Dr. R.A. Frosch, Dr. C.A. Rosen and Prof. J.R. Arnold; Dr. D R. Criswell, Study Director and Senior Technical Advisor, available A-021, UCSD, La Jolla, CA 92093, April 1985. 5. C.J. Cleveland, R. Costanza, C.A.S. Hall, and R. Kaufmann, Energy and the U.S. Economy: A Biophysical Perspective, Science, 225, 890-897, 1984. 6. D.R. Criswell, Scaling and the Start-up Phase of Space Industrialization, Space Manufacturing 3, A1AA79-24359, pp. 223-233, American Inst. Aeronautics and Astronautics. NY, 1979. 7. D.R. Criswell, Cis lunar Industrialization and Higher Human Options, Space Solar Power Review and 35th Congress of the International Astronautical Federation. IAF-84-313, p. 15, Lausanne, Switzerland, October 1984. (In press.) 8. D.R. Criswell, R.D. Waldron, and Buzz Aldrin, Lunar Power System, presented at conference on Space Development: The Next Frontier, National Center for Policy Analysis, University of Dallas, June 1984. 9. H.E. Geoller and A.M. Weinberg. The Age of Substitutability, The American Economic Review 68, 1-12, 1978; see also Science 191, 683-689. 1976. 10. H.E. Goeller and A. Zucker, Infinite Resources: The Ultimate Strategy, Science 223, 456-462, 1984. 11. P. Glaser, Solar Power from Satellites, Physics Today, Feb. 1977, 30-38, and Letters to the Editor, July 1977. 12. N.R. Goins, M.N. Toksoz, and A.M. Dainty, Seismic Energy Release of the Moon (abstract), EOS (Trans. Amer. Geophys. Union) 59, 315, 1978. 13. R. Hallett and D. Kugath, Space Station Automation Study — Automation Requirements Derived from Space Manufacturing Concepts, Contract No. NAS 5-25182, Vol. II — Tech. Report., p. 117. General Electric Corp., Space Systems Division, Phila., PA, November 27, 1984. 14. C.C. Kraft, The Solar Power Satellite Concept — The Past Decade and the Next Decade, AIAA 79-0534, p. 17, 15th Annual Meeting, Washington, D.C. 6-8 February, 1979. 15. Allan W. Love, Basics of SPS Power Transmission from Space, IEEE Antennas and Propagation Society Newsletter, pp. 5-8, December 1980. 16. Lunar and Planetary Institute, Extraterrestrial Materials Processing and Construction, D.R. Criswell, P.I., R.D. Waldron, co-P.L, NASA Contract NSR09-051-001 Mod. No. 24 (1978 p. 450; 1980 p. 500), available on microfiche National Technical Information Service. 17. R.J. Mailloux, Phased Array Theory and Technology, Proceedings IEEE 70, 246-291, March 1982. 18. R. Miller, Extraterrestrial Materials Processing and Construction of Large Space Structures, NASA Contract NAS8-32935, NASA CR-161293, Space Systems Laboratory, Dept. Aeronautics and Astronautics, MIT, Cambridge. MA 02139. Three volumes, Dept, of Aerospace Sciences, MIT. 19. J. de Moraes and V.F. Salatko, Coming: 12,600 Megawatts at Itaipu Island, IEEE Spectrum. August, 46-52, 1983.
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