Impact of Front- and Rear-Stage High Pressure Compressor Deterioration on Jet Engine Performance†
by
Gerald Reitz * and Jens Friedrichs
Gerald Reitz * and Jens Friedrichs
Institute of Jet Propulsion and Turbomachinery, Technische Universität Braunschweig, 38108 Braunschweig, Germany
*
Author to whom correspondence should be addressed.
†
This paper is an extended version of our paper published in Proceedings of the 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC 2017).
Int. J. Turbomach. Propuls. Power 2018, 3(2), 15; https://doi.org/10.3390/ijtpp3020015
Received: 22 January 2018 / Revised: 26 April 2018 / Accepted: 16 May 2018 / Published: 23 May 2018
(This article belongs to the Special Issue Selected Papers from the 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery)
Current civil aviation is characterized by rising cost and competitive pressure, which is partly passed to the MRO (Maintenance, Repair and Overhaul) companies. To improve the maintenance, condition-based maintenance is established, which is characterized by tailored maintenance actions for each part of the jet engine, depending on the individual engine history and operating conditions. Thereby, prediction models help engineers to authorize maintenance actions as effectively as possible. This paper will help to improve these prediction models. Therefore, the influence of specific deterioration of a high pressure compressor (HPC) to jet engine performance parameters such as exhaust gas temperature (EGT) and specific fuel consumption (SFC) will be investigated. For this purpose, computational fluid dynamic (CFD) calculations of deteriorated HPC geometries are carried out and serve as a basis to scale the reference HPC performance characteristics to deteriorated ones. To evaluate the changes in performance parameters, a modular performance synthesis model is set up. In this model, the HPC map is exchanged with deteriorated ones. As a result, the influence of geometric deviations to the design intent can be determined, and the MRO companies are able to focus on the most relevant sections of the compressor blading.
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MDPI and ACS Style
Reitz, G.; Friedrichs, J. Impact of Front- and Rear-Stage High Pressure Compressor Deterioration on Jet Engine Performance. Int. J. Turbomach. Propuls. Power 2018, 3, 15.
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