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Preliminary design and cost of a 1-megawatt solar-pumped iodide laser space-to-space transmission stationA preliminary conceptual design of a space-based solar pumped iodide laser emitting 1 megawatt of laser power for space-to-space power transmission is described. A near parabolic solar collector focuses sunlight onto the t-C4F9I (perfluoro-t butyl iodide) lasant within a transverse flow optical cavity. Using waste heat, a thermal system was designed to supply compressor and auxiliary power. System components were designed with weight and cost estimates assigned. Although cost is very approximate, the cost comparison of individual system components leads to valuable insights for future research. In particular, it was found that laser efficiency was not a dominant cost or weight factor, the dominant factor being the laser cavity and laser transmission optics. The manufacturing cost was approx. two thirds of the total cost with transportation to orbit the remainder. The flowing nonrenewable lasant comprised 20% of the total life cycle cost of the system and thus was not a major cost factor. The station mass was 92,000 kg without lasant, requiring approx. four shuttle flights to low Earth orbit where an orbital transfer vehicle will transport it to the final altitude of 6378 km.
Document ID
19870017752
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Deyoung, R. J.
(NASA Langley Research Center Hampton, VA, United States)
Walker, G. H.
(NASA Langley Research Center Hampton, VA, United States)
Williams, M. D.
(NASA Langley Research Center Hampton, VA, United States)
Schuster, G. L.
(NASA Langley Research Center Hampton, VA, United States)
Conway, E. J.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 5, 2013
Publication Date
September 1, 1987
Subject Category
Lasers And Masers
Report/Patent Number
L-16308
NAS 1.15:4002
NASA-TM-4002
Accession Number
87N27185
Funding Number(s)
PROJECT: RTOP 506-41-41-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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