Degradation of a Main Combustion Chamber Liner on a Space Shuttle Main Engine

Autor:	J.H. Sanders, P.S. Chen, R.A. Parr
Rok vydání:	1992
Předmět:	Materials science Nuclear engineering technology industry and agriculture Degradation (geology) Space Shuttle Combustion chamber equipment and supplies
DOI:	10.31399/asm.fach.v01.c9001031
Popis:	Pinhole defects were found in a main combustion chamber made from NARloy-Z after an unexpectedly short time in service. Analysis indicated that the throat section of the liner had been exposed to very severe environmental conditions of high temperature and high oxygen content, which caused ductility loss and grain-boundary separation. The excessive oxygen content in the liner was attributed to diffusion from an oxygen-rich environment that had resulted from nonuniform mixing of propellants. The internal oxygen embrittled the alloy and reduced its thermal conductivity, which resulted in a higher hot-gas wall temperature and associated degradation of mechanical properties.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::921fbbdce7ca08d37c3c6919cbf9fcc9 https://doi.org/10.31399/asm.fach.v01.c9001031 Zobrazit plný text záznamu