FIGURE 3.4 PRESENT VALUE OF DEMONSTRATION SATELLITE WHEN USED AS AN INITIAL ELEMENT IN A FULL-SCALE SATELLITE major subsystems that would not have to be procured and transported for the other space activities less the specific costs associated with segmenting the demonstration satellite into the useful power modules and other major subsystems and the incremental costs of installing these on other mission spacecraft. Since it is not possible to accurately forecast the demand for space power in the 2000 to 2030 time frame, the demand has been treated parametrically in terms of MW required per year. This demand has been considered in the range of 1 to 15 MW/yr as illustrated by the solid lines in Figure 3.5. The dashed curve in Figure 3.5 indicates the available supply taking into account a 1%/yr degradation in power and an assumed inefficiency (25% salvage loss) or loss resulting from the salvage segmentation process. The intersection of the supply and cumulative demand curves yields the number of years that the demonstration satellite power
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