Approach The technical data base and analytical tools required for a user to implement a flight mission can only be fully defined after the technical requirements of the user mission are identified and specified. The approach for the GES project is to define the mission requirements based on three of the most likely projected missions that would use a reactor power system. The power system requirements that would satisfy these three missions are described in a document entitled Technical Specifications. The flight power system for the GES project is then designed to meet the technical specifications and is called the generic flight system (GFS) design. During the design process all technical issues of the GFS design that need to be developed, based on the present status of the technology, will be identified and prioritized. Each technical issue will be called a validation item. These validation items will include the key technical issues identified during the SP-100 Phase I in addition to the key technical issues identified during the GFS design process. All the technical issues associated with each validation item will be well defined. These well defined validation items will form the basis for the ground engineering system (GES) specifications, analyses, test hardware designs, test articles and experiments. The major GES activities in the SP-100 GES project approach are shown in Fig. 2 in the order that the activities are to be accomplished. Status As shown in Fig. 2, the GES activities are complete through the validation rationale. The validation plan, the GES specification and design and the GES analysis and experiments are partially complete. Also the validation plans for the two technologies considered most critical to a successful SP-100 system, thermoelectric (TE) cell and
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