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Towards climate-neutral aviation: Assessment of maintenance requirements for airborne hydrogen storage and distribution systems

Meissner, Robert and Sieb, Patrick and Wollenhaupt, Eric and Haberkorn, Stefan and Wicke, Kai and Wende, Gerko (2023) Towards climate-neutral aviation: Assessment of maintenance requirements for airborne hydrogen storage and distribution systems. International Journal of Hydrogen Energy, 48 (75), pp. 29367-29390. Elsevier. doi: 10.1016/j.ijhydene.2023.04.058. ISSN 0360-3199.

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Airlines are faced with the challenge of reducing their environmental footprint in an effort to push for climate-neutral initiatives that comply with international regulations. In the past, the aviation industry has followed the approach of incremental improvement of fuel efficiency while simultaneously experiencing significant growth in annual air traffic. With the increase in air traffic negating any reduction in Greenhouse Gas (GHG) emissions, more disruptive technologies such as hydrogen-based onboard power generation are required to reduce the environmental impact of airline operations. However, despite initial euphoria and first conceptual studies for hydrogen-powered aircraft several decades ago, there still has been no mass adoption to this day. Besides the challenges of a suitable ground infrastructure, this can partly be attributed to uncertainties with the associated maintenance requirements and the expected operating costs to demonstrate the economic viability of this technology. With this study, we address this knowledge gap by estimating changes towards scheduled maintenance activities for an airborne hydrogen storage and distribution system. In particular, we develop a detailed system design for a hydrogen-powered, fuel-cell-based auxiliary power generation 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 enhance subsequent techno-economic assessments, (b) identify implications of specific design assumptions with corresponding maintenance activities while ensuring regulatory compliance and (c) describe the impact on the resulting task execution. The thoroughly examined interactions between system design and subsequent maintenance requirements of this study can support practitioners in the development of prospective hydrogen-powered aircraft. In particular, it allows the inclusion of maintenance implications in early design stages of corresponding system architectures. Furthermore, since the presented methodology is transferable to different design solutions, it provides a blueprint for alternative operating concepts such as the complete substitution of kerosene by hydrogen to power the main engines.

Item URL in elib:https://elib.dlr.de/195174/
Document Type:Article
Title:Towards climate-neutral aviation: Assessment of maintenance requirements for airborne hydrogen storage and distribution systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Meissner, RobertUNSPECIFIEDhttps://orcid.org/0000-0002-5299-4006140855778
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:1 September 2023
Journal or Publication Title:International Journal of Hydrogen Energy
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 29367-29390
Keywords:Hydrogen-powered flying; Hydrogen aircraft; Cryogenic hydrogen storage; Scheduled aircraft maintenance; MSG-3; Auxiliary power generation
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 Systems
Location: Hamburg , Lampoldshausen
Institutes and Institutions:Institute of Maintenance, Repair and Overhaul > Product Life Cycle Management
Institute of Space Propulsion > Engineering
Deposited By: Meissner, Robert
Deposited On:21 Aug 2023 06:42
Last Modified:21 Aug 2023 06:42

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