a. Solar array b. Microwave transmitting antenna c. Reflecting/refracting antenna 11. Total system weight 12. System cost a. Nonrecurring b. Recurring 13. Launch, initialization, and operations requirements. STUDY CONCLUSIONS It was concluded that it is feasible to consider segmenting the major structural assemblies of large satellite solar power stations, although several problem areas require more detailed analysis. In particular, the gravity gradient stabilized system appears to have special merit. This concept separates the very large solar flux collection assemblies (either solar arrays or solar collectors) into individual segments • which are attached to each other in a linear fashion by means of the power distribution cable. It weighs approximately the same as the comparable monolithic concept but alleviates two of the significant problem areas associated with the other concepts: (1) excessively large structural assemblies and (2) excessively large station keeping and attitude control propellant expenditures. FUTURE PLANS The gravity gradient stabilized satellite solar power station appears to be feasible and to have a number of attractive features. It is proposed therefore to conduct a further detailed study in which a number of potentially viable gravity gradient stabilized satellite solar power station configurations will be defined. Analytical methods will be developed to perform a detailed investigation of the orbital motions and shading characteristics of recommended systems. Critical subsystem problem areas, such as power distribution and management, will be identified and design solutions conceived and analyzed. An integrated development plan will be defined, leading to the implementation of a full-scale operational system.
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