Fig. 5. Marine rectenna concept. Western Europe should not duplicate work that has been done elsewhere. It should either cover new ground, complement work done elsewhere, or address matters of interest particularly to Europe. A detailed study of the siting of rectennas over both sea and land for the Western European market, and of the associated problems, would satisfy all three of these criteria, since the conditions and problems for receiving SPS power in Western Europe are somewhat different from those prevailing in the USA. The answers obtained from such a study could have important implications for the value of SPS power in the different national supply networks, and also for the overall SPS system design and optimisation. It could, therefore, contribute much to the evaluation of the SPS concept for Western Europe. Acknowledgements - The author is indebted to Mr. Ray Tomkins of Imperial College for his advice and help in the preparation of this paper. The Editor wishes to thank Gordon Woodcock and Donald G. Hervey for their assistance in reviewing this paper. REFERENCES 1. K.W. Billman (ed.). Radiation Energy Conversion in Space, AIAA, New York, 1978. 2. C.N. Bain, Potential of Laser for SPS Power Transmission, U.S. Dept, of Energy, HCP/R-4024-07, 1978. 3. NASA-JSC, Solar Power Satellite Concept Evaluation, JSC-12973, 1977. 4. J.E. Drummond, Optimizing a Low Cost Satellite Energy System, Proc. 12th IECEC, pp 1461-1467, AIChE, 1977. 5. K.W. Billman et al., Space Reflector Technology and Its System Implications, AIAA 15th Annual Meeting, paper 79-0545, New York, 1979. 6. U.S. Dept, of Energy, Satellite Power System Reference System Report, DOE/ER-0023, 1978. 7. W. Westphal et al., Conditions and Requirements for a Potential Application of SPS for Europe, Proc. 16th European Space Symposium, 1979. 8. D. Kassing and K.K. Rheinhartz, Energy for Europe from Space? ESA Journal, Vol. 2, pp 179-187, 1978. 9. M. Trella and K.K. Rheinhartz, European Aspects of SSPS, Proc. Anglo-American Conference ‘Energy and Aerospace', RAeSoc, London, 1978. 10. G. Strawford, Private Communication, 1979. 11. A.D. Kotin, SPS Resource Requirements, U.S. Dept, of Energy, HCP/R-4024-02, 1978. 12. D.G. Hervey, An Analysis of Conceptual Designs and Siting Considerations for an Offshore Rectenna, Brown and Root Inc., Houston, 1978.
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