A dynamic performance diagnostic method applied to hydrogen powered aero engines operating under transient conditions

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dc.contributor.authorChen, Yu-Zhi
dc.contributor.authorTsoutsanis, Elias
dc.contributor.authorXiang, Hen-Chao
dc.contributor.authorLi, Yi-Guang
dc.contributor.authorZhao, Jun-Jie
dc.date.accessioned2022-05-02T15:23:36Z
dc.date.available2022-05-02T15:23:36Z
dc.date.issued2022-04-26
dc.description.abstractAt present, aero engine fault diagnosis is mainly based on the steady-state condition at the cruise phase, and the gas path parameters in the entire flight process are not effectively used. At the same time, high quality steady-state monitoring measurements are not always available and as a result the accuracy of diagnosis might be affected. There is a recognized need for real-time performance diagnosis of aero engines operating under transient conditions, which can improve their condition-based maintenance. Recent studies have demonstrated the capability of the sequential model-based diagnostic method to predict accurately and efficiently the degradation of industrial gas turbines under steady-state conditions. Nevertheless, incorporating real-time data for fault detection of aero engines that operate in dynamic conditions is a more challenging task. The primary objective of this study is to investigate the performance of the sequential diagnostic method when it is applied to aero engines that operate under transient conditions while there is a variation in the bypass ratio and the heat soakage effects are taken into consideration. This study provides a novel approach for quantifying component degradation, such as fouling and erosion, by using an adapted version of the sequential diagnostic method. The research presented here confirms that the proposed method could be applied to aero engine fault diagnosis under both steady-state and dynamic conditions in real-time. In addition, the economic impact of engine degradation on fuel cost and payload revenue is evaluated when the engine under investigation is using hydrogen. The proposed method demonstrated promising diagnostic results where the maximum prediction errors for steady state and transient conditions are less than 0.006% and 0.016%, respectively. The comparison of the proposed method to a benchmark diagnostic method revealed a 15% improvement in accuracy which can have great benefit when considering that the cost attributed to degradation can reach up to $702,585 for 6000 flight cycles of a hydrogen powered aircraft fleet. This study provides an opportunity to improve our understanding of aero engine fault diagnosis in order to improve engine reliability, availability, and efficiency by online health monitoring.en_UK
dc.identifier.citationChen Y-Z, Tsoutsanis E, Xiang H-C, et al., (2022) A dynamic performance diagnostic method applied to hydrogen powered aero engines operating under transient conditions. Applied Energy, Volume 317, July 2022, Article number 119148en_UK
dc.identifier.eissn1872-9118
dc.identifier.issn0306-2619
dc.identifier.urihttps://doi.org/10.1016/j.apenergy.2022.119148
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/17839
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectAero Engine Performanceen_UK
dc.subjectCondition Monitoringen_UK
dc.subjectModel-Based Methoden_UK
dc.subjectTurbofan Engine Diagnosticsen_UK
dc.subjectEconomic Impacten_UK
dc.titleA dynamic performance diagnostic method applied to hydrogen powered aero engines operating under transient conditionsen_UK
dc.typeArticleen_UK

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