Foreword This is the final report of the “fresh look” feasibility assessment of the prospects for collecting solar power in space and transmitting it by wireless means for use on Earth. The work was performed principally by staff members of SAIC and Futron Corporation, as Task Order 9 of NASA/LeRC Contract NAS3-26565. Staff members who contributed to this effort include, for SAIC: Harvey Feingold (Study Manager), Alan Friedlander, Mark Jacobs, and Mike Stancati. Contributing staff members of Futron are: Carissa Christensen, Doug Comstock, Gregg Maryniak, and Scott Rix. The authors gratefully acknowledge the active participation and guidance of the study leader at NASA Headquarters, John C. Mankins, who also created the Sun Tower concept, and of the NASA/LeRC Task Manager, Carlos David Rodriguez. Dick Dickinson of the Jet Propulsion Laboratory made several important contributions to the end-to-end RF systems analysis throughout the study, and was also a writer of one of the white papers included in an appendix to this report. Others who participated in various aspects of the assessment include Jeff George, Barbara McKissock, and Joe Nainiger of NASA/LeRC. We are also pleased to acknowledge the contributions of many people who participated in one or more of the technical interchange meetings held to review system concepts and related issues: complete lists of attendees can be found in an appendix to this report. Of particular note are the white papers, included here as appendices, submitted by Dr. William Brown, Dr. Gay Canough, and Mary Woodell of Bivings-WoodelL
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