Structural Benchmark Creep Testing for the Advanced Stirling Convertor Heater Head

Krause, David L.; Kalluri, Sreeramesh; Bowman, Randy R.; Shah, Ashwin R.

doi:10.2514/6.2008-5774

Cited by 2 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…13,14 Structural benchmark testing of heater head shells will be conducted to validate analytical models and to complement the uniaxial creep testing of MarM-247. 15 During benchmark testing, the heater head will experience multi-axial stresses similar to what exists during operation in a generator. Diametral extensometers and a pair of movable laser micrometers measure creep during the test.…”

Section: Structuresmentioning

confidence: 99%

Supporting Technology at GRC to Mitigate Risk as Stirling Power Conversion Transitions to Flight

Schreiber

Thieme

Wong

2008

6th International Energy Conversion Engineering Conference (IECEC)

View full text Add to dashboard Cite

Stirling power conversion technology has been reaching more advanced levels of maturity during its development for space power applications. The current effort is in support of the Advanced Stirling Radioisotope Generator (ASRG), which is being developed by the U.S. Department of Energy (DOE), Lockheed Martin Space Systems Company (LMSSC), Sunpower Inc., and the NASA Glenn Research Center (GRC). This generator would use two high-efficiency Advanced Stirling Convertors (ASCs) to convert thermal energy from a radioisotope heat source into electricity. Of paramount importance is the reliability of the power system and as a part of this, the Stirling power convertors. GRC has established a supporting technology effort with tasks in the areas of reliability, convertor testing, high-temperature materials, structures, advanced analysis, organics, and permanent magnets. The project utilizes the matrix system at GRC to make use of resident experts in each of the aforementioned fields. Each task is intended to reduce risk and enhance reliability of the convertor as this technology transitions toward flight status. This paper will provide an overview of each task, outline the recent efforts and accomplishments, and show how they mitigate risk and impact the reliability of the ASC's and ultimately, the ASRG. Nomenclature

show abstract

Section: Structuresmentioning

confidence: 99%