ESA European Aspects of SPS

The worst possible interactions are identified so far as mutual eclipses of the satellites for about 2 weeks around the equinoxes - rather 15 minutes daily at 6 a.m. and 6 p.m. dictated by the conditions of celestial mechanics. This will reduce the effective plant factor (which is defined as the percentage of the yearly Fig.3.1: PRINCIPAL ORBITAL POSITIONING LIMITS OF SPS FOR WESTERN EUROPE

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