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Accession Number N20120013867
Title Advanced Stirling Convertor (ASC) Technology Maturation in Preparation for Flight.
Publication Date Aug 2012
Media Count 17p
Personal Author P. A. Cornell W. A. Wong
Abstract The 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.
Keywords Aerospace systems
Energy conversion efficiency
Fatigue tests
Flight tests
Nondestructive tests
Refractory materials
Reliability analysis
Stirling cycle

Source Agency National Aeronautics and Space Administration
NTIS Subject Category 84 - Space Technology
81J - Reciprocation & Rotating Combustion Engines
Corporate Author National Aeronautics and Space Administration, Cleveland, OH. NASA John H. Glenn Research Center at Lewis Field.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1305
Contract Number N/A

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