Applicability of European Technology The development scenario is divided into 3 phases; each phase following up specific objectives. Since early phases should improve the fundamental understanding of the concept and assist the definition of the SPS subsystems, it is understood that hardware required for early key experiments in space could be derived in most cases from state-of-the-art technology. An evaluation process has therefore started at ESTEC (Ref.4 ) to identify those European technologies applicable to near-term studies and concept-technology verification investigations that will be needed if SPS s are to become a reality in the late 1990 s. Examples of advanced European space technologies are described including high power microwave amplifiers, antennas, advanced structures, multi-kilowatt solar arrays, attitude and orbit control systems, electric propulsion, the ARIANE launch vehicle and the near equatorial launch site in Kourou. References 1) J. Ruth & W. Westphal, 1979, European Aspects of SPS, Final Report ESA CR (P) 1266 2) General Technology Systems Ltd., 1979, Study Field B- SPS-, Report GT 78008/Bl to 3. 3) DOE/NASA, SPS Reference System Report, October 1978, D0E/ER-0023 4) H. Stoewer, B. Tilgner, D. Kassing, European Technology Applicable to SPS, Proceed. IAF 1979, Paper 79-174 5) Conservation Commission of the World Energy Conference 1978, Electricity Demand Projections, 1978
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