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Additively Manufactured Titanium Alloy Sandwich Structures for Thermal Protection

Nieke, Philipp and Schleutker, Thorn and Gülhan, Ali and Rattenbury, Nicholas and Cater, John E. (2023) Additively Manufactured Titanium Alloy Sandwich Structures for Thermal Protection. In: AIAA SCITECH Forum 2023. Aerospace Research Central. AIAA SCITECH 2023 Forum, 2023-01-23 - 2023-01-27, National Harbor, USA. doi: 10.2514/6.2023-2719.

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Official URL: https://arc.aiaa.org/doi/10.2514/6.2023-2719


Additively manufactured titanium alloy sandwich structures with lattice core have a potential use for thermal protection systems. To investigate the influence of the lattice core structure, four samples were manufactured in Ti-6Al-4V using electron beam melting. Two sample thicknesses and two lattice densities were realised. Plasma wind tunnel testing in the arc-heated facility L2K at the German Aerospace Center (DLR) was carried out to characterise their performance. Each sample was subjected to hypersonic air flow during four heating steps with an exposure time of 180 s each. Nominal cold-wall heat fluxes of 100 kW/m², 200 kW/m² and 500 kW/m² were achieved. All samples survived the test procedure. The formation of a liquid film was observed during the exposure to highest heat flux level. Within the investigated parameter space, the lattice core structure had negligible influence on the front temperature but affected the back temperature considerably. For the lowest heat flux condition, the thick sample with the light lattice showed the lowest maximum back temperature of 390°C . The sample thickness showed a higher effect on the maximum back temperature whereas the lattice density had the greater effect on the insulation-to-density performance.

Item URL in elib:https://elib.dlr.de/193457/
Document Type:Conference or Workshop Item (Speech)
Title:Additively Manufactured Titanium Alloy Sandwich Structures for Thermal Protection
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Nieke, PhilippUniversity of AucklandUNSPECIFIEDUNSPECIFIED
Schleutker, ThornUNSPECIFIEDhttps://orcid.org/0000-0002-1833-2850UNSPECIFIED
Rattenbury, NicholasUniversity of AucklandUNSPECIFIEDUNSPECIFIED
Cater, John E.University of AucklandUNSPECIFIEDUNSPECIFIED
Date:20 January 2023
Journal or Publication Title:AIAA SCITECH Forum 2023
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Publisher:Aerospace Research Central
Keywords:TPS, additive manufacturing, heat shield, hot structure
Event Title:AIAA SCITECH 2023 Forum
Event Location:National Harbor, USA
Event Type:international Conference
Event Start Date:23 January 2023
Event End Date:27 January 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 - Reusable Space Systems and Propulsion Technology
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Schleutker, Thorn
Deposited On:06 Jun 2023 13:23
Last Modified:24 Apr 2024 20:54

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