The construction philosophy is to fabricate nearly all structural parts in space, to fabricate all components (solar cells, klystrons, etc.) on earth, and to assemble the SPS in GEO. Fig. 2.6.2 : BENEFITS OF SP/CE FABRICATION [Source : 78/291 The SPS structures require high tolerances, especially the antenna ( 1 mm for 10 GHz!). For these tolerances and for good mountability the joint designs will be essential.
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