3. A structural array made up of individual segments joined by flexible wires which transmit tension loads but are not capable of transmitting compression or bending loads. 4. A structural array made up of free-flying individual segments which are station-kept to maintain the array formation. Communication linkages exist rather than structural linkages. 5. A structural array made up of individual segments which are attached to each other by a cable which is maintained in tension by gravity gradient forces. Six solar photovoltaic and four solar powered Brayton conceptual designs were prepared. The following system comparison parameters were identified and comparisons made using, in each case, the monolithic design as a baseline: 1. Assembly/deployment technique 2. On-orbit power transfer technique 3. System efficiency chain 4. Station keeping requirements 5. Guidance, stabilization, and control requirements 6. Microwave requirements 7. Power distribution requirements 8. Technology requirements 9. Dimensions of largest major assembly a. Solar array b. Microwave transmitting antenna c. Reflecting/refracting antenna 10. Weight of largest major assembly
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