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Estimating the Scheduled Maintenance Implications for a Hydrogen-Powered Aircraft

Meissner, Robert and Sieb, Patrick and Kensbock, Jonas and Wicke, Kai and Wende, Gerko (2023) Estimating the Scheduled Maintenance Implications for a Hydrogen-Powered Aircraft. 13th EASN International Conference, 2023-09-05 - 2023-09-08, Salerno, Italien.

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The aviation industry is faced with an existential challenge of reducing their ecological footprint within the coming decades to meet regulatory requirements such as the European Green Deal. While the industry has followed the approach of incremental fuel efficiency gains in the past, much of the associated greenhouse gas reduction has been negated by an increased air traffic volume. Therefore, more disruptive technologies such as the use of hydrogen as energy carrier are required to comply with international regulations in the future. However, despite initial euphoria and first conceptual studies for hydrogen-powered aircraft several decades ago, there has been no mass adoption to this day. Besides the challenges of a suitable ground infrastructure, this can be attributed to uncertainties with the associated maintenance requirements and the expected operating costs to ensure economic viability for operators. With this study, we address this knowledge gap by estimating changes towards scheduled maintenance activities when substituting a kerosene-based with a hydrogen-powered, fuel cell-based auxiliary power generation. In particular, we develop a detailed system design with strong focus on regulatory compliance and perform a comparative analysis with an Airbus A320 legacy system. That analysis allows us to (a) identify changes for the expected maintenance effort to estimate implications on the economic viability for operators, (b) identify how specific design assumptions correspond with subsequent maintenance activities and (c) describe the impact on the resulting task execution. Consequently, this study can support practitioners in the development of prospective hydrogen-powered aircraft, especially by including maintenance requirements in early design stages of possible system architectures. Furthermore, since the presented methodology is transferable to different design solutions, it provides a blueprint for alternative operating concepts, e.g., the complete substitution of kerosene by hydrogen for the aircraft’s propulsion.

Item URL in elib:https://elib.dlr.de/196591/
Document Type:Conference or Workshop Item (Speech)
Title:Estimating the Scheduled Maintenance Implications for a Hydrogen-Powered Aircraft
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Meissner, RobertUNSPECIFIEDhttps://orcid.org/0000-0002-5299-4006142094282
Sieb, PatrickUNSPECIFIEDhttps://orcid.org/0000-0003-3316-5429UNSPECIFIED
Wicke, KaiUNSPECIFIEDhttps://orcid.org/0000-0002-8220-6437UNSPECIFIED
Wende, GerkoUNSPECIFIEDhttps://orcid.org/0000-0003-2368-2369UNSPECIFIED
Date:September 2023
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Hydrogen Aircraft; Auxiliary Power Generation; Scheduled Maintenance; Cryogenic Hydrogen; PEM Fuel Cell; MSG-3
Event Title:13th EASN International Conference
Event Location:Salerno, Italien
Event Type:international Conference
Event Start Date:5 September 2023
Event End Date:8 September 2023
Organizer:European Aeronautics Science Network
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Components and Systems
DLR - Research area:Aeronautics
DLR - Program:L CS - Components and Systems
DLR - Research theme (Project):L - MRO and Cabin, L - Aircraft Technologies and Integration
Location: Hamburg
Institutes and Institutions:Institute of Maintenance, Repair and Overhaul > Product Life Cycle Management
Deposited By: Meissner, Robert
Deposited On:11 Sep 2023 07:17
Last Modified:24 Apr 2024 20:56

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