The program models utilize the results of the systems analysis of the basic SPS elements conducted during this study. The guidelines and assumptions are listed in table VII-1. For each construction and configuration concept, a "nominal" weight and size SPS (sec. IV) was used in the calculations. The resulting program models are listed in tables VII-2 to VII-4. C. Mission Management Concept In developing a philosophy for an overall mission management concept that can satisfy the basic system requirements and conduct the program model as presented above, the following guidelines have been identified and assumed. 1. Personnel-operated and automated machines for manufacturing and construction tasks in space 2. Operations and control authority delegated throughout the ground- and space-based facilities 3. Program and overall operations and control authority maintained on ground 4. Dedicated synchronous satellite communications relay system In general, all past space programs and the approaching Shuttle Orbiter, Spacelab, and IUS Space Transportation System (STS) missions can be regarded as ground-based space operations; that is, the complement of flight systems is prepared for flight in ground-based facilities and is largely controlled in accordance with plans and procedures developed and managed from ground-based facilities. The development of continously manned permanent space facilities in LEO and GEO conducting the SPS program model and detailed functions as discussed in sections IV, V, and VI requires that the authority for operations and control of daily ongoing activities must be delegated to the primary operational sites, basically the launch and recovery site, the LEO and GEO operational bases, and the SPS satellite ground rectenna sites. The mission management concept that has been developed to incorporate this philosophy is illustrated in figure VII-2. This concept applies only to the production/operational phase of implementing the 112 SPS's. D. Mission Management Functions The decentralization and assignment of SPS mission management functions are allocated and identified as follows from figure VII-2. 1. Program Headquarters Mission Control It is envisioned that one element of the basic Ground Support System will be a control function and facility for the overall program management, operations, administration, program planning, resource
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