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Advanced Stirling Convertor (ASC) Technology Maturation in Preparation for FlightThe Advanced Stirling Convertor (ASC) is being developed by an integrated team of Sunpower and National Aeronautics and Space Administration s (NASA s) Glenn Research Center (GRC). The ASC development, funded by NASA s Science Mission Directorate, started as a technology development effort in 2003 and has since evolved through progressive convertor builds and successful testing to demonstrate high conversion efficiency, low mass, and capability to meet long-life Radioisotope Power System (RPS) requirements. The technology has been adopted by the Department of Energy and Lockheed Martin Space Systems Company s Advanced Stirling Radioisotope Generator (ASRG), which has been selected for potential flight demonstration on Discovery 12. This paper provides an overview of the status of ASC development including the most recent ASC-E2 convertors that have been delivered to GRC and an introduction to the ASC-E3 and ASC flight convertors that Sunpower will build next. The paper also describes the technology maturation and support tasks being conducted at GRC to support ASC and ASRG development in the areas of convertor and generator extended operation, high-temperature materials, heater head life assessment, organics, nondestructive inspection, spring fatigue testing, and other reliability verification tasks.
Document ID
Document Type
Technical Memorandum (TM)
Wong, Wayne A.
(NASA Glenn Research Center Cleveland, OH, United States)
Cornell, Peggy A.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
August 26, 2013
Publication Date
August 1, 2012
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
Meeting Information
Nuclear and Emerging Technologies for Space (NETS-2011)(Albuquerque, NM)
Funding Number(s)
WBS: WBS 138494.05.02.03
Distribution Limits
Work of the US Gov. Public Use Permitted.
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