Vibroacoustic Study of a Miniature Jet Engine Under Blade-Casing Rubbing Condition
Turbine engines are currently one of the most important and expensive aircraft components. Both for economic and safety reasons, high engine reliability is required. Therefore, sophisticated methods are needed to determine their current condition. Diagnostics of turbine engines allow for the detecti...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/1/27 |
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| author | Bartłomiej Cywka Wojciech Prokopowicz Bartosz Ciupek Grzegorz M. Szymański Daniel Mokrzan Andrzej Frąckowiak |
| author_facet | Bartłomiej Cywka Wojciech Prokopowicz Bartosz Ciupek Grzegorz M. Szymański Daniel Mokrzan Andrzej Frąckowiak |
| author_sort | Bartłomiej Cywka |
| collection | DOAJ |
| description | Turbine engines are currently one of the most important and expensive aircraft components. Both for economic and safety reasons, high engine reliability is required. Therefore, sophisticated methods are needed to determine their current condition. Diagnostics of turbine engines allow for the detection of faults before they lead to damage. The article presents methods and results of vibroacoustic diagnostics of a miniature GTM400 jet engine adapted to kerosene and hydrogen fuel supply. During thermal and vibroacoustic tests of engine parameters powered by hydrogen fuel supply, the engine seized up in the initial start-up phase due to improper control and rapid thermal changes in the gas line. The cause of the undesirable technical condition of the engine was a significantly higher temperature of gases (exhaust gases) affecting the working elements of the engine (turbine shaft, rotor, and blades), which consequently led to engine damage. This phenomenon and the results obtained from the unexpected technical condition constitute a valuable premise for considering the issue of proper operation of the turbojet engine during fuel changes, especially following current trends related to the decarbonization of the aviation sector. The obtained research results and the resulting observations and conclusions make it necessary to perform technical analyses and pre-implementation tests each time before allowing the use of a conventional engine if it undergoes the process of reconstruction in terms of using a new fuel (especially if its technical parameters are different from the originally used one). The presented method of conducting tests allows for a detailed determination of the causes of damage to the cooperating elements of the engine structure under the influence of changes in operating parameters. |
| format | Article |
| id | doaj-art-25175b4a84fd4d0da0c818b0b4c39d7f |
| institution | Kabale University |
| issn | 1996-1073 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-25175b4a84fd4d0da0c818b0b4c39d7f2025-01-10T13:16:52ZengMDPI AGEnergies1996-10732024-12-011812710.3390/en18010027Vibroacoustic Study of a Miniature Jet Engine Under Blade-Casing Rubbing ConditionBartłomiej Cywka0Wojciech Prokopowicz1Bartosz Ciupek2Grzegorz M. Szymański3Daniel Mokrzan4Andrzej Frąckowiak5Faculty of Environmental Engineering and Energy, Institute of Thermal Energy, Poznan University of Technology, 60-965 Poznan, PolandMinistry of National Defense, 00-911 Warsaw, PolandFaculty of Environmental Engineering and Energy, Institute of Thermal Energy, Poznan University of Technology, 60-965 Poznan, PolandFaculty of Civil and Transport Engineering, Institute of Transport, Poznan University of Technology, 60-965 Poznan, PolandFaculty of Civil and Transport Engineering, Institute of Transport, Poznan University of Technology, 60-965 Poznan, PolandFaculty of Environmental Engineering and Energy, Institute of Thermal Energy, Poznan University of Technology, 60-965 Poznan, PolandTurbine engines are currently one of the most important and expensive aircraft components. Both for economic and safety reasons, high engine reliability is required. Therefore, sophisticated methods are needed to determine their current condition. Diagnostics of turbine engines allow for the detection of faults before they lead to damage. The article presents methods and results of vibroacoustic diagnostics of a miniature GTM400 jet engine adapted to kerosene and hydrogen fuel supply. During thermal and vibroacoustic tests of engine parameters powered by hydrogen fuel supply, the engine seized up in the initial start-up phase due to improper control and rapid thermal changes in the gas line. The cause of the undesirable technical condition of the engine was a significantly higher temperature of gases (exhaust gases) affecting the working elements of the engine (turbine shaft, rotor, and blades), which consequently led to engine damage. This phenomenon and the results obtained from the unexpected technical condition constitute a valuable premise for considering the issue of proper operation of the turbojet engine during fuel changes, especially following current trends related to the decarbonization of the aviation sector. The obtained research results and the resulting observations and conclusions make it necessary to perform technical analyses and pre-implementation tests each time before allowing the use of a conventional engine if it undergoes the process of reconstruction in terms of using a new fuel (especially if its technical parameters are different from the originally used one). The presented method of conducting tests allows for a detailed determination of the causes of damage to the cooperating elements of the engine structure under the influence of changes in operating parameters.https://www.mdpi.com/1996-1073/18/1/27vibroacousticsjet engineSTFT analysisrubbingdiagnostic parameters |
| spellingShingle | Bartłomiej Cywka Wojciech Prokopowicz Bartosz Ciupek Grzegorz M. Szymański Daniel Mokrzan Andrzej Frąckowiak Vibroacoustic Study of a Miniature Jet Engine Under Blade-Casing Rubbing Condition Energies vibroacoustics jet engine STFT analysis rubbing diagnostic parameters |
| title | Vibroacoustic Study of a Miniature Jet Engine Under Blade-Casing Rubbing Condition |
| title_full | Vibroacoustic Study of a Miniature Jet Engine Under Blade-Casing Rubbing Condition |
| title_fullStr | Vibroacoustic Study of a Miniature Jet Engine Under Blade-Casing Rubbing Condition |
| title_full_unstemmed | Vibroacoustic Study of a Miniature Jet Engine Under Blade-Casing Rubbing Condition |
| title_short | Vibroacoustic Study of a Miniature Jet Engine Under Blade-Casing Rubbing Condition |
| title_sort | vibroacoustic study of a miniature jet engine under blade casing rubbing condition |
| topic | vibroacoustics jet engine STFT analysis rubbing diagnostic parameters |
| url | https://www.mdpi.com/1996-1073/18/1/27 |
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