Version 1
: Received: 27 June 2023 / Approved: 29 June 2023 / Online: 29 June 2023 (10:45:24 CEST)
Version 2
: Received: 30 June 2023 / Approved: 3 July 2023 / Online: 4 July 2023 (03:15:29 CEST)
How to cite:
Butt, J.A.; Markmiller, J.F.C. Breaking Barriers: Initial Step Towards Certification Standards for Aircraft Wing-Structure-Integrated High-Pressure Composite Hydrogen Tanks. Preprints2023, 2023062101. https://doi.org/10.20944/preprints202306.2101.v2
Butt, J.A.; Markmiller, J.F.C. Breaking Barriers: Initial Step Towards Certification Standards for Aircraft Wing-Structure-Integrated High-Pressure Composite Hydrogen Tanks. Preprints 2023, 2023062101. https://doi.org/10.20944/preprints202306.2101.v2
Butt, J.A. and Johannes Friedrich Carl Markmiller. 2023 "Breaking Barriers: Initial Step Towards Certification Standards for Aircraft Wing-Structure-Integrated High-Pressure Composite Hydrogen Tanks" Preprints. https://doi.org/10.20944/preprints202306.2101.v2
Abstract
Standards are not only crucial for obtaining a certification for practical use, but also an essential guidance for inferring how and what to simulate as well test experimentally. This paper examines the potential applicability of existing standards from various domains, including aerospace and automotive, to Wing-Structure- Integrated high-pressure Hydrogen Tanks (SWITHs). It highlights the associated challenges and uncertainties, acknowledging the absence of a single, all-encompassing standard for SWITHs. We embark on an exploration aimed at identifying alternative standards that are best suited for SWITHs. The analysis scrutinizes existing standards that could potentially facilitate SWITH certification, with a particular focus on the inclusivity of externally loaded hydrogen tanks. Assessment criteria are established to filter standards that best meet the needs of SWITHs. Through this process, we identify two key standards that present themselves as the most promising alternatives. Moreover, we delineate the technical constraints involved in selecting the maximum nominal working pressure for high-pressure tanks intended for burst tests. Our findings reveal a current upper limit of 525 bar, imposed by the limitations of existing test facilities. The study underscores that these standards should serve as flexible guiding frameworks rather than rigid protocols, encouraging progressive development in the SWITH field.
Keywords
structure-integrated tanks; high pressure composite hydrogen tanks; hydrogen standards in aviation; standard for strucutre-integrated hydrogen tanks; SWITH
Subject
Engineering, Aerospace Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Commenter: Javed Butt
Commenter's Conflict of Interests: Author