William Gill Urban Systems Project Office IX. Manufacturing Capacity, Natural Resources, Transportation and Energy Considerations The purpose of this section is to show how critical resources and industrial capacity might be identified, and during the early design period to assess the impact of varying designs and resources and industrial capacity. A. Requirements The SPS can be broken down into a number of systems. Each of these systems can be further broken down into a series of subsystems, which can in turn be further broken down to components. The mass of materials making up these components can then be determined. In the early design phases, there are numerous alternates in components and component materials. The first task is to identify these alternate approaches. Figure IXA-1 shows a breakdown of the transmission/receiving system based upon Raytheon's "Microwave Power Transmission Studies" (draft) of December 1975. This study contains numerous alternates to components which have a marked effect on the materials to be used, and the amount of each material. In Figure IXA-1, the most probable configuration has been indicated by solid boxes. Alternates have been indicated by dashed boxes. Designs which have been considered, but appear unlikely to be used are indicated by crossed-out boxes. The nominal design is arbitrarily defined as the solid boxes, and the dashed boxes as design pertuba- tions. The individual pieces which make up the component described by a box can be identified by material, from the Raytheon report. This information can now be arranged in a matrix in which the rows are component parts and the columns are basic materials required for a SPS. For each box the columns are summed to give the total of each material and the gross weight. A second matrix in which the rows represent the summed outputs above gives the total of each type material and the gross weight for one system configuration. Repeating the process, over all systems give a material summary of the total SPS and is shown in Part 1 of Appendix IX(A). Vehicles and fuel requirements are estimated from the gross weights above, and the results are estimated in Part 2 of the Appendix. Proposed launching assembly schemes are shown in Figure IXA-2. The alternate boxes can be considered, and alternate matrices constructed. For each column, i. e., variation in material amounts can be established by substituting alternates into the summary and hence, determining ranges of amounts of various materials. No attempt has been made at this point to make range of amounts of materials estimates. B. Manufacturing Capacity The following considerations will influence material choices or the need for finding alternate materials:
RkJQdWJsaXNoZXIy MTU5NjU0Mg==