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Extended Operation of Stirling Convertors in a Thermal Vacuum EnvironmentA 110 watt Stirling Radioisotope Generator (SRG110) is being developed for potential use on future NASA exploration missions. The development effort is being performed by Lockheed Martin under contract to the Department of Energy (DOE). Infinia, Corp. supplies the free-piston Stirling power convertors, and NASA Glenn Research Center (GRC) provides support to the effort in a range of technologies. This generator features higher efficiency and specific power compared to alternatives. One potential application for the generator would entail significant cruise time in the vacuum of deep space. A test has been initiated at GRC to demonstrate functionality of the Stirling convertors in a thermal vacuum environment. The test article resembles the configuration of the SRG110, however the requirement for low mass was not considered. This test demonstrates the operation of the Stirling convertors in the thermal vacuum environment, simulating deep space, over an extended period of operation. The status of the test as well as the data gathered will be presented in this paper.
Document ID
Document Type
Technical Memorandum (TM)
Oriti, Salvatore M.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
September 7, 2013
Publication Date
February 1, 2006
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
AIAA Paper 2005-5747
Meeting Information
Third International Energy Conversion Engineering Conference(San Francisco, CA)
Funding Number(s)
WBS: WBS 972-20-01
Distribution Limits
Work of the US Gov. Public Use Permitted.
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