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Bio-based ablative thermal protection materials for space application

Günther, Raphaela and Hohn, Oliver and Unbehaun, Holger and Drescher, Oliver and Weihs, Hendrik (2023) Bio-based ablative thermal protection materials for space application. ASCenSIon Conference 2023, 2023-09-12 - 2023-09-14, Dresden.

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Abstract

In the context of a growing bioeconomy, green renewable resources are of interest for the space industry. Because of its relatively low density, low thermal conductivity, easy handling and good ablative behaviour bio- and wood-based materials are taken into consideration for the use as a thermal protection system (TPS) material on hot structures such as the leading edges of stabilising fins, fairings, nose cones and other TPS applications. As a mandatory and thus flight critical structure of launch vehicles, these parts need to be aerodynamically effective, lightweight, stiff and heat resistant on its foremost front end, where high temperatures may arise from gas kinetic effects. In order to gain a deeper understanding and assess the applicability of modern bio- and wood-based materials, a systematic literature and patent analysis of bio- and wood-based materials in spaceflight has been conducted as a starting point for the research. To set a framework for the application of a bio-based material in space, functionality and boundary conditions have been analysed and form requirements for the development of the bio-based TPS material. Further, prototype materials with varying ingredients of natural fibres, binders and additives have been developed and characterised by a thermogravimetric analysis (TGA) to determine their general suitability as a TPS material. The materials have been additionally screened in more detail via the analyses of bulk density, thermal conductivity and specific heat capacity. Measurements under real environmental conditions in a plasma channel were carried out for further investigation and form the core of this work. With the defined requirements and results from screening tests and plasma channel tests a selection of the best-performing prototype material could be made. First impacts on launch vehicle’s design and an outlook for future research on bio-based TPS conclude this contribution.

Item URL in elib:https://elib.dlr.de/200786/
Document Type:Conference or Workshop Item (Speech)
Title:Bio-based ablative thermal protection materials for space application
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Günther, RaphaelaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hohn, OliverUNSPECIFIEDhttps://orcid.org/0000-0002-4225-7352UNSPECIFIED
Unbehaun, HolgerUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Drescher, OliverUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Weihs, HendrikUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:14 September 2023
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:bio-based, renewable resources, ablation, thermal protection, TPS, re-entry, experimental, arc-heated wind tunnel
Event Title:ASCenSIon Conference 2023
Event Location:Dresden
Event Type:international Conference
Event Start Date:12 September 2023
Event End Date:14 September 2023
Organizer:TU Dresden
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 - Key technologies for high-energy return flights of the carrier stages (STORT)
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Space Operations and Astronaut Training > Mobile Rocket Base
Institute of Structures and Design > Space System Integration
Deposited By: Hohn, Oliver
Deposited On:14 Dec 2023 09:32
Last Modified:24 Apr 2024 21:01

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