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Reliability Demonstration Approach for Advanced Stirling Radioisotope GeneratorDeveloped for future space missions as a high-efficiency power system, the Advanced Stirling Radioisotope Generator (ASRG) has a design life requirement of 14 yr in space following a potential storage of 3 yr after fueling. In general, the demonstration of long-life dynamic systems remains difficult in part due to the perception that the wearout of moving parts cannot be minimized, and associated failures are unpredictable. This paper shows a combination of systematic analytical methods, extensive experience gained from technology development, and well-planned tests can be used to ensure a high level reliability of ASRG. With this approach, all potential risks from each life phase of the system are evaluated and the mitigation adequately addressed. This paper also provides a summary of important test results obtained to date for ASRG and the planned effort for system-level extended operation.
Document ID
Document Type
Conference Paper
Ha, CHuong
(Lockheed Martin Space Systems Co. Sunnyvale, CA, United States)
Zampino, Edward
(NASA Glenn Research Center Cleveland, OH, United States)
Penswick, Barry
(SunPower, Inc. Athens, OH, United States)
Spronz, Michael
(Sest, Inc. Cleveland, OH, United States)
Date Acquired
August 25, 2013
Publication Date
July 25, 2010
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
Funding Number(s)
WBS: WBS 138484,95,92,94,94
Distribution Limits
Public Use Permitted.
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