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Advanced Stirling Convertor Dynamic Test Approach and ResultsThe U.S. Department of Energy (DOE), Lockheed Martin Corporation (LM), and NASA Glenn Research Center (GRC) have been developing the Advanced Stirling Radioisotope Generator (ASRG) for use as a power system for space science missions. As part of the extended operation testing of this power system, the Advanced Stirling Convertors (ASC) at NASA GRC undergo a vibration test sequence intended to simulate the vibration history that an ASC would experience when used in an ASRG for a space mission. This sequence includes testing at workmanship and flight acceptance levels interspersed with periods of extended operation to simulate prefueling and post fueling. The final step in the test sequence utilizes additional testing at flight acceptance levels to simulate launch. To better replicate the acceleration profile seen by an ASC incorporated into an ASRG, the input spectra used in testing the convertors was modified based on dynamic testing of the ASRG Engineering Unit (ASRG EU) at LM. This paper outlines the overall test approach, summarizes the test results from the ASRG EU, describes the incorporation of those results into the test approach, and presents the results of applying the test approach to the ASC-1 #3 and #4 convertors. The test results include data from several accelerometers mounted on the convertors as well as the piston position and output power variables.
Document ID
Document Type
Conference Paper
Meer, David W.
(Sest, Inc. Middleburgh Heights, OH, United States)
Hill, Dennis
(Lockheed Martin Space Systems Co. King of Prussia, PA, United States)
Ursic, Joseph J.
(Analex Corp. Cleveland, OH, United States)
Date Acquired
August 24, 2013
Publication Date
March 1, 2010
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
AIAA Paper 2009-4552
Meeting Information
Meeting: Seventh International Energy Conversion Engineering Conference (IECEC)
Location: Denver, CO
Country: United States
Start Date: August 2, 2009
End Date: August 5, 2009
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 138494.04.01.01
Distribution Limits
Public Use Permitted.
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