Assessment of degradation equivalent operating time for aircraft gas turbine engines

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dc.contributor.authorAlozie, Ogechukwu
dc.contributor.authorLi, Yi-Guang
dc.contributor.authorDiakostefanis, Michail
dc.contributor.authorWu, Xin
dc.contributor.authorShong, Xingchao
dc.contributor.authorRen, Wencheng
dc.date.accessioned2020-07-29T09:43:49Z
dc.date.available2020-07-29T09:43:49Z
dc.date.freetoread2020-07-29
dc.date.issued2020-01-09
dc.description.abstractThis paper presents a novel method for quantifying the effect of ambient, environmental and operating conditions on the progression of degradation in aircraft gas turbines based on the measured engine and environmental parameters. The proposed equivalent operating time (EOT) model considers the degradation modes of fouling, erosion, and blade-tip wear due to creep strain, and expresses the actual degradation rate over the engine clock time relative to a pre-defined reference condition. In this work, the effects of changing environmental and engine operating conditions on the EOT for the core engine booster compressor and the high-pressure turbine were assessed by performance simulation with an engine model. The application to a single and multiple flight scenarios showed that, compared to the actual engine clock time, the EOT provides a clear description of component degradation, prediction of remaining useful life, and sufficient margin for maintenance action to be planned and performed before functional failure.en_UK
dc.identifier.citationAlozie O, Li YG, Diakostefanis M, et al., (2020) Assessment of degradation equivalent operating time for aircraft gas turbine engines. The Aeronautical Journal, Volume 124, Issue 1274, April 2020, pp. 549-580en_UK
dc.identifier.cris26755602
dc.identifier.issn0001-9240
dc.identifier.urihttps://doi.org/10.1017/aer.2019.153
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/15606
dc.language.isoenen_UK
dc.publisherCambridge University Pressen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectEquivalent Operating Timeen_UK
dc.subjectErosionen_UK
dc.subjectCreepen_UK
dc.subjectDegradationen_UK
dc.subjectRemaining useful lifeen_UK
dc.subjectGas turbineen_UK
dc.subjectFoulingen_UK
dc.subjectPrognosticsen_UK
dc.subjectPerformanceen_UK
dc.titleAssessment of degradation equivalent operating time for aircraft gas turbine enginesen_UK
dc.typeArticleen_UK

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