The generic trends which one can identify today that are likely to carry over into the 21st century include mainly an '’industrialization" of §pace; that is, a gradual transition from government-funded activities primarily of a research nature to activities promoted and conducted in the private sector because they are profitable. It is likely that these activities will be encouraged by significant reductions in the cost of space-based activities resulting from a transition to the Space Shuttle and more advanced space transportation systems, and by the introduction and proliferation of multipurpose platforms. Much of the activity in space in the post-2000 time period will take place in geosynchronous orbit. This activity is likely to generate a considerable amount of low earth orbit (LEO) to GEO traffic, independent of SPS. There is also likely to be considerable other geocentric traffic, however, including LEO to GEO, GEO to GEO and lunar traffic, as well as earth escape traffic. Within the context of these space activities, potential salvage uses for both the SPS demonstration satellite and full-scale SPS satellites were identified and evaluated. It is not clear today that the SPS demonstration will be a success; that is, that upon completion of the demonstration satellite project, it will be found desirable to proceed with construction of full-scale SPS satellites as planned. (If it were known today that the demonstration would be successful, it would be unnecessary.) Thus salvage uses of the demonstration satellite need to recognize that there may or may not be a continuing SPS program. On the other hand, salvage of full-scale SPS satellites will occur only if there is an SPS program and, consequently, the salvage uses for full-scale SPS satellites are appropriately identified in the context of a space program which includes SPS. Such a program clearly requires a space transportation system that can inexpensively transport large amounts of materials to geocentric space, and it includes
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