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Leakage Investigation of Epoxy-Based Composite Laminates for Reusable Cryogenic Propellant Tanks

Rauh, Carolin and Reimer, Thomas and Wilken, Jascha (2022) Leakage Investigation of Epoxy-Based Composite Laminates for Reusable Cryogenic Propellant Tanks. 2nd International Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions & Engineering (FAR), 19.-23. Juni 2022, Heilbronn, Deutschland.

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Abstract

Experimental studies on the gas leakage behaviour of carbon composite laminates are taking place at the German Aerospace Center to further promote the potential use of carbon fibre composites as propellant tank material for reusable launch vehicles. The leak rates of IM7/5320-1 prepreg unidirectional and cross-ply samples are measured using helium mass spectrometry. The leakage behaviour of the samples shows a significant deterioration after being cryogenically cycled with liquid nitrogen. Samples featuring thin plies with approximately 20% of the standard ply thickness are also tested to assess their impact on leakage resistance. The latest results indicate an enhanced gas-tightness of cross-ply laminates with thin plies at helium gauge pressures of 2 bar, but no significant advantage at 4 bar compared to the UD samples. The helium leakage test bed and the test routine are presented along with the latest results and future plans of this ongoing work.

Item URL in elib:https://elib.dlr.de/187090/
Document Type:Conference or Workshop Item (Speech)
Title:Leakage Investigation of Epoxy-Based Composite Laminates for Reusable Cryogenic Propellant Tanks
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Rauh, Carolincarolin.rauh (at) dlr.dehttps://orcid.org/0000-0003-4506-1715
Reimer, ThomasThomas.Reimer (at) dlr.dehttps://orcid.org/0000-0002-2106-7453
Wilken, JaschaJascha.Wilken (at) dlr.dehttps://orcid.org/0000-0001-5748-1261
Date:June 2022
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:RLV, Cryogenic Tank, CFRP, Permeation, Leakage, CFK, Leckage, wiederverwendbare Launcher,
Event Title:2nd International Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions & Engineering (FAR)
Event Location:Heilbronn, Deutschland
Event Type:international Conference
Event Dates:19.-23. Juni 2022
Organizer:ESA Conference Bureau / ATPI Corporate Events
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Project TRANSIENT
Location: Bremen , Stuttgart
Institutes and Institutions:Institute of Structures and Design > Space System Integration
Institute of Space Systems > Space Launcher Systems Analysis
Deposited By: Rauh, Carolin
Deposited On:28 Jun 2022 09:40
Last Modified:28 Jun 2022 09:40

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