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http://dx.doi.org/10.6108/KSPE.2017.21.6.073

Predictions of Fatigue Life of Copper Alloy for Regenerative Cooling Channel of Thrust Chamber  

Lee, Keumoh (Combustion Chamber Team, Korea Aerospace Research Institute)
Ryu, Chulsung (Combustion Chamber Team, Korea Aerospace Research Institute)
Heo, Seongchan (Combustion Chamber Team, Korea Aerospace Research Institute)
Choi, Hwanseok (Combustion Chamber Team, Korea Aerospace Research Institute)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.21, no.6, 2017 , pp. 73-82 More about this Journal
Abstract
Low-cycle thermal fatigue problem resulting from multiple use of a liquid rocket engine has to be considered for the development of a reusable launch vehicle. In this study, life prediction equations suggested by previous researchers were compared as applied to various copper alloy cases to predict fatigue lives from tensile test data. The present study has revealed that among the presently considered life prediction methods, universal slopes method provides the best life prediction result for the copper alloys, and the modified Mitchell's method provides the best life prediction result for oxygen free high conductivity (OFHC) copper.
Keywords
Liquid-propellant Rocket Engine; Copper Alloy; Low-cycle Fatigue; Life Prediction;
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