Structural Analyses of Stirling Power Convertor Heater Head for Long-Term Reliability, Durability, and Performance
作者： Gary R. Halford , Ashwin Shah , Vinod K. Arya , David L. Krause , Paul A. Bartolotta
DOI: 10.1063/1.1449815
关键词: Mars rover 、 Operating temperature 、 Durability 、 Reliability engineering 、 Mechanical engineering 、 Electric power system 、 Engineering 、 Reliability (semiconductor) 、 Benchmark (computing) 、 Stirling cycle 、 Stirling engine
摘要: Deep space missions require onboard electric power systems with reliable design lifetimes of up to 10-y and beyond. A high-efficiency Stirling radioisotope system is a prime candidate for future deep Mars rover applications. To ensure ample durability, the structurally critical Heater Head Power-Convertor has undergone extensive computational analyses operating temperatures (up 650 °C), stresses, creep-resistance thin-walled Inconel 718 bill-of-material. Durability predictions are presented in terms probability survival. benchmark structural testing program commenced support analyses. This paper reports current status our durability assessments.
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