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Investigating the Response of a Flexible TPS to a High Enthalpy Environment

Johnstone, Emma and Esser, Burkard and Gülhan, Ali and Overend, Sam and Underwood, John and Ferracina, Luca (2019) Investigating the Response of a Flexible TPS to a High Enthalpy Environment. Int. Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions & Engineering, 30. Sept. - 3. Okt. 2019, Monopoli, Italien.

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Flexible Thermal Protection Systems (TPS) are a key technological area required to enable inflatable and deployable decelerator concepts to be used. By using inflatable or deployable hypersonic decelerators, heavier payloads can be delivered, and high-altitude landing sites can be reached on Mars since aeroshells are no longer confined by the dimensions of the launcher fairing. European experience in testing flexible TPS concepts requires maturation in order to exploit this emerging technology. To improve the European capability, a flexible TPS concept was tested at the DLR L2K arc heated facility under flight representative conditions. The flexible TPS concept was made up of layers of CeraFib Tex 99 for the surface layers and Insulair NP 650 Plus for the inner insulation layer, all sourced from European companies. The TPS material was tested in a purpose-built sample holder in both Air and CO2 atmospheres, at heat fluxes up to 450kW/m2 and heat loads of 40.5MJ/m2. Thermocouples were placed within the layers to assist with the thermal characterisation of the response. In this paper, the results are shown and analysed using FGE's FABL and MABLE codes. FABL is a 1D, finite difference ablation code while MABLE is a 3D, finite volume ablation code. The advantage of MABLE is that multiple material layers can be modelled with and without decomposition and so is well suited to the analysis of a flexible TPS. Material models have been generated for both materials tested and the results agree well with experiment.

Item URL in elib:https://elib.dlr.de/134014/
Document Type:Conference or Workshop Item (Speech)
Title:Investigating the Response of a Flexible TPS to a High Enthalpy Environment
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Johnstone, EmmaFluid Gravity Engineering, UKUNSPECIFIED
Esser, BurkardBurkard.Esser (at) dlr.deUNSPECIFIED
Gülhan, AliAli.Guelhan (at) dlr.deUNSPECIFIED
Overend, SamVorticity Ltd., UKUNSPECIFIED
Underwood, JohnVorticity Ltd., UKUNSPECIFIED
Ferracina, LucaATG EuropeUNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Inflatable TPS, Arc Heater Testing, L2K, Ablation Modelling
Event Title:Int. Conference on Flight Vehicles, Aerothermodynamics and Re-entry Missions & Engineering
Event Location:Monopoli, Italien
Event Type:international Conference
Event Dates:30. Sept. - 3. Okt. 2019
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 - Wiederverwendbare Raumfahrtsysteme (old)
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonoc and Hypersonic Technology
Deposited By: Esser, Dr.-Ing. Burkard
Deposited On:12 Feb 2020 07:39
Last Modified:12 Feb 2020 07:39

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