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Manufacturing and Testing of a Purged Thermal Insulation Concept for Reusable CFRP Cryotanks

Rauh, Carolin and Reimer, Thomas (2023) Manufacturing and Testing of a Purged Thermal Insulation Concept for Reusable CFRP Cryotanks. 25th AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2023-05-28 - 2023-06-01, Bengaluru, Indien. doi: 10.2514/6.2023-3091.

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Official URL: https://arc.aiaa.org/doi/pdf/10.2514/6.2023-3091


The German Aerospace Center experimentally investigates the concept of a purged insulation system for reusable launch vehicles. The concept consists of a carbon composite corrugated core sandwich structure, a cryogenic insulation, a thermal protection system including attachment elements and a purge system. The purge system aims to minimize overall insulation layer thickness by transporting thermal energy into the system. Moisture accumulation and icing within the high-temperature insulation shall be hereby prevented when the tank is filled with cryogenic propellants during launch preparations, conforming to thermal design criteria. The purge system is integrated into the composite sandwich structure to keep the number of additional components low, hence reducing system complexity and overall mass. The full insulation and purging concept is realized as integrated test object and is cyclically tested in the thermomechanical test facility THERMEX. The cycles cover the thermal conditions of both the cold pre-launch tank filling case with active purge flow and the hot conditions of a booster reentry. Additionally, the test object is subjected to axial mechanical pressure loads. The present work describes the manufacturing and the sensor arrangement of the integrated test object and summarizes the testing procedure including preliminary test results.

Item URL in elib:https://elib.dlr.de/194960/
Document Type:Conference or Workshop Item (Speech)
Title:Manufacturing and Testing of a Purged Thermal Insulation Concept for Reusable CFRP Cryotanks
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Rauh, CarolinUNSPECIFIEDhttps://orcid.org/0000-0003-4506-1715UNSPECIFIED
Reimer, ThomasUNSPECIFIEDhttps://orcid.org/0000-0002-2106-7453UNSPECIFIED
Date:27 May 2023
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Thermal Insulation, Cryotank, Thermal Protection System, TPS, Reusable Launch Vehicle, RLV, Sensors, Thermex, Thermomechanical Testing, Composites, CFRP
Event Title:25th AIAA International Space Planes and Hypersonic Systems and Technologies Conference
Event Location:Bengaluru, Indien
Event Type:international Conference
Event Start Date:28 May 2023
Event End Date:1 June 2023
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: Braunschweig , Stuttgart
Institutes and Institutions:Institute of Structures and Design > Space System Integration
Institut für Systemleichtbau > Structural Mechanics
Deposited By: Rauh, Carolin
Deposited On:15 Jun 2023 10:10
Last Modified:24 Apr 2024 20:55

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