A Study on Quantities Driving Maintenance, Repair, and Overhaul for Hybrid-Electric Aeroengines

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Autoren

  • Lukas Schuchard
  • Maximilian Bień
  • Karl Ziaja
  • Norman Blanken
  • Jan Göing
  • Jens Friedrichs
  • Francesca di Mare
  • Bernd Ponick
  • Ronald Mailach

Externe Organisationen

  • Technische Universität Dresden
  • Technische Universität Braunschweig
  • Ruhr-Universität Bochum
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Titel des SammelwerksAircraft Engine
Herausgeber (Verlag)American Society of Mechanical Engineers(ASME)
Band146
Auflage2
ISBN (elektronisch)9780791886939
PublikationsstatusVeröffentlicht - Feb. 2024
VeranstaltungASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023 - Boston, USA / Vereinigte Staaten
Dauer: 26 Juni 202330 Juni 2023

Publikationsreihe

NameProceedings of the ASME Turbo Expo
Band1

Abstract

Hybrid-electric propulsion for commercial aircraft is currently a key industry interest. Consequently, publications on its design and performance estimation are manifold. However, models addressing characteristics of maintenance, repair, and overhaul (MRO) are virtually unavailable – even though direct maintenance costs (DMC) represent a significant part of direct operating costs in commercial aviation. Detailed analysis of hybrid-electric aircraft propulsion degradation and maintenance scenarios must integrate both methods of sizing and design as well as operational factors for conventional and electric subsystems, as operator-specific utilisation strongly influences MRO. Accordingly, a holistic engine analysis model is currently being developed using the example of an Airbus A320 aircraft, taking into account flight mission, engine performance, degradation, and MRO. This paper presents an implementation of hybridisation into the gas turbine thermodynamic cycle calculation for parallel hybrid-electric engine architectures with 2 and 5 MW electric motors, and the approach necessary for re-sizing hybridised gas turbine components. Turbomachinery loading throughout representative short-haul missions is analysed for conventional and hybrid-electric configurations based on the V2500 high-bypass turbofan engine, whereby unknown or uncertain boundary conditions are considered in a probabilistic sensitivity study. As a result, MRO-driving quantities such as engine performance parameters, atmospheric conditions, and ingested aerosols can be compared. The findings suggest that DMC related to the gas turbine may be considerably lowered through hybridisation, as it allows for reduced peak temperatures and more uniform gas turbine operation. However, these gains are at least partially offset by additional components’ DMC. For electric machines, bearings and the stator winding insulation are life-limiting; where the latter becomes increasingly dominant for higher power densities associated with high current densities and copper losses. Thermo-mechanical stresses are considered as driving mechanisms in power electronic systems degradation. Consequently, powerful lightweight machines must be balanced against tolerable thermal and electrical loads to achieve suitable service life.

ASJC Scopus Sachgebiete

Zitieren

A Study on Quantities Driving Maintenance, Repair, and Overhaul for Hybrid-Electric Aeroengines. / Schuchard, Lukas; Bień, Maximilian; Ziaja, Karl et al.
Aircraft Engine. Band 146 2. Aufl. American Society of Mechanical Engineers(ASME), 2024. v001t01a009 (Proceedings of the ASME Turbo Expo; Band 1).

Publikation: Beitrag in Buch/Bericht/Sammelwerk/KonferenzbandAufsatz in KonferenzbandForschungPeer-Review

Schuchard, L, Bień, M, Ziaja, K, Blanken, N, Göing, J, Friedrichs, J, di Mare, F, Ponick, B & Mailach, R 2024, A Study on Quantities Driving Maintenance, Repair, and Overhaul for Hybrid-Electric Aeroengines. in Aircraft Engine. 2 Aufl., Bd. 146, v001t01a009, Proceedings of the ASME Turbo Expo, Bd. 1, American Society of Mechanical Engineers(ASME), ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023, Boston, USA / Vereinigte Staaten, 26 Juni 2023. https://doi.org/10.1115/1.4063580
Schuchard, L., Bień, M., Ziaja, K., Blanken, N., Göing, J., Friedrichs, J., di Mare, F., Ponick, B., & Mailach, R. (2024). A Study on Quantities Driving Maintenance, Repair, and Overhaul for Hybrid-Electric Aeroengines. In Aircraft Engine (2 Aufl., Band 146). Artikel v001t01a009 (Proceedings of the ASME Turbo Expo; Band 1). American Society of Mechanical Engineers(ASME). https://doi.org/10.1115/1.4063580
Schuchard L, Bień M, Ziaja K, Blanken N, Göing J, Friedrichs J et al. A Study on Quantities Driving Maintenance, Repair, and Overhaul for Hybrid-Electric Aeroengines. in Aircraft Engine. 2 Aufl. Band 146. American Society of Mechanical Engineers(ASME). 2024. v001t01a009. (Proceedings of the ASME Turbo Expo). Epub 2023 Nov 2. doi: 10.1115/1.4063580
Schuchard, Lukas ; Bień, Maximilian ; Ziaja, Karl et al. / A Study on Quantities Driving Maintenance, Repair, and Overhaul for Hybrid-Electric Aeroengines. Aircraft Engine. Band 146 2. Aufl. American Society of Mechanical Engineers(ASME), 2024. (Proceedings of the ASME Turbo Expo).
Download
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abstract = "Hybrid-electric propulsion for commercial aircraft is currently a key industry interest. Consequently, publications on its design and performance estimation are manifold. However, models addressing characteristics of maintenance, repair, and overhaul (MRO) are virtually unavailable – even though direct maintenance costs (DMC) represent a significant part of direct operating costs in commercial aviation. Detailed analysis of hybrid-electric aircraft propulsion degradation and maintenance scenarios must integrate both methods of sizing and design as well as operational factors for conventional and electric subsystems, as operator-specific utilisation strongly influences MRO. Accordingly, a holistic engine analysis model is currently being developed using the example of an Airbus A320 aircraft, taking into account flight mission, engine performance, degradation, and MRO. This paper presents an implementation of hybridisation into the gas turbine thermodynamic cycle calculation for parallel hybrid-electric engine architectures with 2 and 5 MW electric motors, and the approach necessary for re-sizing hybridised gas turbine components. Turbomachinery loading throughout representative short-haul missions is analysed for conventional and hybrid-electric configurations based on the V2500 high-bypass turbofan engine, whereby unknown or uncertain boundary conditions are considered in a probabilistic sensitivity study. As a result, MRO-driving quantities such as engine performance parameters, atmospheric conditions, and ingested aerosols can be compared. The findings suggest that DMC related to the gas turbine may be considerably lowered through hybridisation, as it allows for reduced peak temperatures and more uniform gas turbine operation. However, these gains are at least partially offset by additional components{\textquoteright} DMC. For electric machines, bearings and the stator winding insulation are life-limiting; where the latter becomes increasingly dominant for higher power densities associated with high current densities and copper losses. Thermo-mechanical stresses are considered as driving mechanisms in power electronic systems degradation. Consequently, powerful lightweight machines must be balanced against tolerable thermal and electrical loads to achieve suitable service life.",
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AU - di Mare, Francesca

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AU - Mailach, Ronald

N1 - Funding Information: This work is conducted as part of the joint research programme LuFo VI-1. It is supported by the German Federal Ministry of Economic Affairs and Climate Action under grant numbers 20E1913A, 20E1913B, 20E1913C, and 20E1913D. Funding Information: The authors would like to thank Yongtao Cao from Leibniz Universität Hannover for his contribution to this research effort. This work is conducted as part of the joint research pro-gramme LuFo VI-1. It is supported by the German Federal Ministry of Economic Affairs and Climate Action under grant numbers 20E1913A, 20E1913B, 20E1913C, and 20E1913D.

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