at approximately the eighth day of the 90 days allocated for fabrication and checkout of each satellite. The waveguide subarrays have different need dates, but their very low density characteristics make it necessary to include some arrays in almost every payload, thus complicating mass flow planning. A total of 166 HLLV flights are required to transport 37.2 x 106 kg, representing the mass of one satellite, to LEO. (37.2 x 10$ kg is not necessarily the current satellite mass, which is subject to continual updating, but is a representative value.) Seven different payload mixes, averaging 225,000 kg each, have been defined and sequenced to support construction needs. An HLLV launch schedule averaging 3.2 flights per day has been postulated and is shown as the top line of the figure. The schedule is within the projected launch rate capability, considering other delivery requirements imposed on the transportation system such as maintenance materials and crews. This provides the potential for completion of deliveries to each satellite in 51 days thus providing a 21 day margin for contingencies. Cargo Packaging - An analysis of cargo packaging was conducted to assure that the construction materials can be properly packaged in quantities consistent with construction requirements and in packages that fully utilize the payload weight capability of the HLLV, while not exceeding the volume constraints. Table R-7 illustrates packaging concepts for major elements of the satellite. These package configurations, sizes, and specified quantities per satellite are designed for compatibility with the satellite construction concept and construction equipment described earlier. Three primary structure cassettes are installed in each beam machine to produce the 2-m triangular beam elements which comprise the basic building block for the 50-m girders. The cassettes contain enough material to complete one half of the satellite structure and are replaced only once subsequent to initial loading of the beam machine to complete the remainder of the structure. Therefore, sufficient cassettes must be on hand at the beginning of the first wing fabrication to support construction of the entire wing. Each solar blanket roll is 750 m long - the length required for one bay. For a 600-m wide bay, 22 of these 25-m wide rolls are mounted side by side
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