construction base elements, transportation vehicles, and ground, an "air traffic control center" will be needed to integrate all operations in orbit. This facility will provide a communications capability (voice, TV, TLM, etc.) to construction base elements, other satellites, transportation systems, and major ground facilities network. Activities such as maintenance scheduling, logistics scheduling, switching control, communications management, and solar flare caution and warning will be done in this facility. A computer processing system will be needed to maintain a data base, data base processing, evaluation, and distribution. Center of gravity and weight management will be required for construction elements during construction buildup. Centralization for overall mission and operations control for the construction base and its interfaces is a key element in the organization of the base. Mission and operation control will include activities such as transportation and docking control, construction activity scheduling, consumables management, safety operations, laser alignment, and mission logistics. V-B-5 Crew Habitation Facilities Crew Habitation Facilities consist of a number of types of equipment--the habitation module, subsystems module, and power module. The habitation modules will provide a shirtsleeve earth type environment for personnel at the eight major worksites. Eating, sleeping, and personnel hygiene functions will be done in these modules. Because of the large numbers of personnel required (200-800) for the GEO construction base, habitation modules will be needed for cafeteria, hospital, exercise, and off-duty relaxation type functions. Airlocks will also be needed for EVA/IVA operations. The subsystem modules will contain the necessary subsystems for support and operation of the Construction Base. The power module is attached to or an integral part of the subsystem module. This module will provide electrical power to operate the required subsystems. Systems redundancy or backup power will be needed for reliability and safety reasons. V-B-6 Construction Base Configuration Evaluation The unique geometric configuration of the SPS column/cable influences the required relative grouping and location of Construction Base elements with respect to systems design, operation, and interface with other orbital elements. Therefore, a subjective comparison was made of five configuration alternatives (Figures V-B-6-1 through V-B-6-3) in an attempt to determine an optimum configuration with regard to established construction steps and techniques. A configuration evaluation
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