k. As a guide, build and deploy cycle for SPS should not exceed 3 years to limit interest charges. 1. For the aluminum-amplitron configuration, near optimum transmitting antenna and receiving antenna sizes are 0. 9 km and 10 km respectively, and transmitting antenna weight is about 6 x 10kg. 1. 2. 4 TECHNOLOGY DEVELOPMENT AND TEST PROGRAMS The recommended critical technology developments in support of both the integrated ground test program and the orbital test program are as proposed in Sections 13 and 14. The integrated ground test program and orbital test programs are based on the level of detail established to date in studies including the current status of technology development. It is recommended that they be re-evaluated in terms of both the objectives and their implementation as further detail study is conducted and technology developments are matured. 1. 2. 4. 1 Technology Development and Ground Test Program a. Initial technology development is needed for dc-rf converter, materials, and phase control subsystem. b. Test program will provide data on controllability and radio frequency interference. c. Transmitting antenna phased array and rectenna are required for integrated ground testing. d. Rough order of magnitude costs are $4M for technology and $23M for the integrated ground test. 1. 2. 4. 2 Technology Development and Orbital Test Program a. Orbital test is needed to develop and demonstrate dc-rf converter startup and operation, zero 'g' assembly and operations, and learning with respect to projected costs and schedule. b. Requirements are satisfied by a geosychronous test satellite and by a series of Shuttle sortie missions that lead to an orbital test facility. c. A low earth orbital test facility can be sized to determine the effects on the upper ionosphere of high microwave power densities.
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