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Test Hardware Design for Flightlike Operation of Advanced Stirling Convertors (ASC-E3)
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Author and Affiliation:
Oriti, Salvatore M.(NASA Glenn Research Center, Cleveland, OH, United States)
Abstract: NASA Glenn Research Center (GRC) has been supporting development of the Advanced Stirling Radioisotope Generator (ASRG) since 2006. A key element of the ASRG project is providing life, reliability, and performance testing of the Advanced Stirling Convertor (ASC). For this purpose, the Thermal Energy Conversion branch at GRC has been conducting extended operation of a multitude of free-piston Stirling convertors. The goal of this effort is to generate long-term performance data (tens of thousands of hours) simultaneously on multiple units to build a life and reliability database. The test hardware for operation of these convertors was designed to permit in-air investigative testing, such as performance mapping over a range of environmental conditions. With this, there was no requirement to accurately emulate the flight hardware. For the upcoming ASC-E3 units, the decision has been made to assemble the convertors into a flight-like configuration. This means the convertors will be arranged in the dual-opposed configuration in a housing that represents the fit, form, and thermal function of the ASRG. The goal of this effort is to enable system level tests that could not be performed with the traditional test hardware at GRC. This offers the opportunity to perform these system-level tests much earlier in the ASRG flight development, as they would normally not be performed until fabrication of the qualification unit. This paper discusses the requirements, process, and results of this flight-like hardware design activity.
Publication Date: Nov 01, 2012
Document ID:
20120016508
(Acquired Dec 04, 2012)
Subject Category: ENERGY PRODUCTION AND CONVERSION
Report/Patent Number: NASA/TM-2012-217726, AIAA Paper 2012-4254, E-18224
Document Type: Technical Report
Meeting Information: 10th International Energy Conversion Engineering Conference; 30 Jul. - 1 Aug. 2012; Atlanta, GA; United States
Meeting Sponsor: American Inst. of Aeronautics and Astronautics; Reston, VA, United States
Contract/Grant/Task Num: WBS 138494.01.99.01
Financial Sponsor: NASA Glenn Research Center; Cleveland, OH, United States
Organization Source: NASA Glenn Research Center; Cleveland, OH, United States
Description: 16p; In English; Original contains color illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright
NASA Terms: ENERGY CONVERSION; FABRICATION; FLIGHT TESTS; PERFORMANCE TESTS; PISTON ENGINES; RELIABILITY; STIRLING CYCLE; THERMAL ENERGY
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