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Materials and Design study of thermoplastic composite pipes for liquid hydrogen distribution in aviation


Title: Materials and Design study of thermoplastic composite pipes for liquid hydrogen distribution in aviation

Authors: Daniel Barfuss, Tim Grasser, Alexander Rohkamm, Fabian Aßmann

DOI: 10.33599/nasampe/c.23.0198

Abstract: Lightweight construction is one of the key technologies for reducing resource consumption. In addition to the currently strongly promoted goal of implementing emission-free drive technologies, lightweight construction continues to be a main requirement for modern aircraft. Liquid hydrogen (LH2), for example, requires around three times the volume compared to kerosene and thus increases the overall system mass, which means that additional fuel is required. This effect can be positively influenced by using fiber-plastic composites (FRP) in the area of the LH2 storage and line system.FRP tank systems that can be transferred to aviation already exist in space travel. However, there are no solutions available in any market for lightweight pipelines made of FRP, so that current hydrogen pipeline systems are primarily based on metallic materials and therefore only have a low degree of lightweight construction. However, since FRP pipelines offer up to 50% weight savings compared to metal constructions, the technological maturity level for the production of FRP LH2 lines should be increased and the risk of use reduced.This paper demonstrates the material and design study for the development and provision of a lightweight piping system in aviation based on thermoplastic fiber composites (TPC) for the design of vacuum-based insulation concepts with double-walled pipes. On the one hand it is shown how the overall system weight is reduced by changing the material from metal to fiber composite, and on the other hand potential design principles and manufacturing processes of complex-shaped piping systems by means of a process chain for thermoplastic fiber composites. In detail it is shown how the laminate structure is created being suitable for a LH2 environment including the selection of materials and how the integral fittings are made of fiber composites.

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Conference: CAMX 2023

Publication Date: 2023/10/30

SKU: TP23-0000000198

Pages: 10

Price: $20.00

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