Table 5-2 IAAM Elements 5.2. Element-Level Detail Model elements have been developed, as defined in the model architecture shown previously. The elements have been assigned names and letters, as shown in Table 5-2. Elements A-H & T are combined to provide definition of the overall SSP architecture. There are seven elements associated with the SSP Architecture definition. SSP system manufacturing capability, ground launch infrastructure, ETO system, in-space transportation, in-space infrastructure, SSP: space segment, SSP: ground segment, and commercial power utilities systems. Each of these elements includes definition of parameters in four primary categories. These include performance related engineering parameters, operations related engineering parameters, non-recurring cost parameters, and recurring cost parameters. Element definition must encompass all the input variables as required by the model This includes technical parameters of an engineering as well as operational nature, and cost parameters for both non-recurring and recurring expenses. Estimates of cost were developed in part by using parametric information from the major 1979 DOE/NASA Solar Power Satellite System Definition Study. This information provided some of the basis for developing cost estimating relationships for different technologies and new approaches to space solar power architectures. The 1979 NASA/DOE reference system was a very large system with tremendous on-orbit infrastructure requirements for facilities and astronauts. The costs of the reference system can be mapped to the element definitions used in this analysis to establish consistency and for use in scaling of estimates. An initial step in our analysis was to map the non-recurring cost estimates of the 1979 reference system to the architecture definition system we are using, according to the elements (A) through (H) as identified in Table 5-2. The results of this analysis are shown in Table 5-3, Summary of Non-Recurring Cost, 1979 Reference System, by Architecture Element. This illustrates the cost-breakout of the reference system for each of the elements we are using to describe an architecture. Table 5-3 Summary of Non-Recurring Costs, 1979 Reference System - FY79 $ Billion
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