DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Testing combined cryogenic insulation and thermal protection systems for reusable stages

Wilken, Jascha and Callsen, Steffen and Daub, Dennis and Fischer, Alexander and Liebisch, Martin and Rauh, Carolin and Reimer, Thomas and Scheufler, Henning and Sippel, Martin (2021) Testing combined cryogenic insulation and thermal protection systems for reusable stages. In: Proceedings of the International Astronautical Congress, IAC. 72nd International Astronautical Congress (IAC), 25. Okt. - 29. Okt 2021, Dubai, VAE. ISSN 0074-1795.

[img] PDF


Reusable launchers experience a large range of thermal extremes, reaching from the cryogenic temperatures within the propellant tanks to the high external heat flux encountered during reentry. During all operational phases (filling, hold, ascent, ballistic, reentry) every component of the launcher has to be kept within the allowed temperature domains to assure reusability of the system. For this purpose, not only is cryogenic insulation needed but also an external thermal protection system. While usually treated as separate domains, for winged reusable launch vehicles cryogenic insulation and the thermal protection system have to be designed together since they are both integrated onto the propellant tanks external surface. Additional complexity arises from the fact that multiple cycles of thermal and mechanical loads have to be survived without substantial refurbishment in order to assure a cost-effective design. Within the DLR this topic was first explored in the AKIRA project, which investigated selected technologies that were deemed critical for operational reusable booster stages but which are not being covered within the flight demonstrator projects of the DLR. An overview over the AKIRA experimental campaign with representative test objects, which verified the thermal functionality of the derived design, is given. Within a currently ongoing follow-on project (TRANSIENT) the design is further refined and applied to both metallic and composite tank materials. For both cases segments meant to represent a slice of an RLV propellant tank will be manufactured and equipped with the cryogenic insulation and thermal protection systems and will be tested under representative loads for up to 50 cycles. In addition to the thermal loads investigated previously, mechanical loads will also be applied to the test object.

Item URL in elib:https://elib.dlr.de/148255/
Document Type:Conference or Workshop Item (Speech)
Title:Testing combined cryogenic insulation and thermal protection systems for reusable stages
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wilken, JaschaUNSPECIFIEDhttps://orcid.org/0000-0001-5748-1261UNSPECIFIED
Callsen, SteffenUNSPECIFIEDhttps://orcid.org/0000-0002-5481-5403UNSPECIFIED
Daub, DennisUNSPECIFIEDhttps://orcid.org/0000-0002-6030-698XUNSPECIFIED
Liebisch, MartinUNSPECIFIEDhttps://orcid.org/0000-0001-5423-7511UNSPECIFIED
Rauh, CarolinUNSPECIFIEDhttps://orcid.org/0000-0003-4506-1715UNSPECIFIED
Reimer, ThomasUNSPECIFIEDhttps://orcid.org/0000-0002-2106-7453UNSPECIFIED
Sippel, MartinUNSPECIFIEDhttps://orcid.org/0000-0001-7356-7575UNSPECIFIED
Date:October 2021
Journal or Publication Title:Proceedings of the International Astronautical Congress, IAC
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:RLV, TPS, cryogenic insulation, cryogenic propellant
Event Title:72nd International Astronautical Congress (IAC)
Event Location:Dubai, VAE
Event Type:international Conference
Event Dates:25. Okt. - 29. Okt 2021
Organizer:International Astronautical Federation
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
Institutes and Institutions:Institute of Space Systems
Institute of Composite Structures and Adaptive Systems
Institute for Aerodynamics and Flow Technology
Institute of Structures and Design
Deposited By: Wilken, Jascha
Deposited On:17 Jan 2022 08:22
Last Modified:17 Jan 2022 08:22

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.