Figure 12-4. Space station beam manufacturing. 12.1 . 2 SUPPORT SERVICES The space station construction base provides the basic support for multidiscipline science and applications development and operations. The support includes accommodations for crew and subsystems services such as environmental control and life support, power, communications data processing and instrumentation, attitude control system, and stabilization. Basic concepts and modular configurations were developed to accommodate a four to six man space station buildup that provides these services. These services coupled with a fabrication and assembly capability and an earlier developed power satellite provide a base for construction of a subscale SPS. Continued modular buildup and minor modifications to subsystems will significantly increase the construction base capability to accommodate dedicated elements for large scale commercial test, manufacture, and operations. 12.2 TRANSPORTATION 12.2.1 REQUIREMENTS AND ANALYSIS The transportation requirements to support the SPS during the buildup in LEO and transfer to GEO, and the SPS operational time frame dictate a number of special puipose transportation systems. Earth-surface-to-LEO transportation requirements dictate two basic systems: (1) heavy lift launch vehicles for SPS cargo, and (2) personnel launch vehicles for construction/ maintenance base(s) crew rotation and critical logistics support. Orbital
RkJQdWJsaXNoZXIy MTU5NjU0Mg==