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Investigations on the thermal behaviour of CMC-based leading edges in hypersonic arc jet flows

Kuhn, Markus and Esser, Burkard and Dalenbring, Mats and Gülhan, Ali and Cavagna, Luca (2012) Investigations on the thermal behaviour of CMC-based leading edges in hypersonic arc jet flows. CEAS Space Journal, 3 (1-2), pp. 61-76. Springer Verlag, Vienna. DOI: 10.1007/s12567-012-0025-2. ISSN 1868-2502.

Full text not available from this repository.

Official URL: http://dx.doi.org/10.1007/s12567-012-0025-2


A generic leading edge model with a swept ceramic wing assembly was built, which enables to test leading edge samples made of the CMC materials C/C-SiC (non-oxide), OXIPOL and WHIPOX (both oxide). To measure the temperature evolutions, thermocouples were installed inside the model whereas an infrared camera and pyrometers were applied at the model’s outer surface. The model was investigated in DLR’s arc-heated facility L3K at a total enthalpy of 8.5 MJ/kg, Mach number of 7.8, varying angles of attack and wing inclinations. Furthermore, the effect of leading edge bluntness was studied. An analytical estimation was performed which was in good agreement with the maximum leading edge surface temperatures measured. The experiments conducted provide a sound data basis for the simulation of aerothermally loaded CMC leading edge structures. Within a first attempt, a fluid-structure coupled simulation was performed by FOI, based on a modal approach for the conduction model. Despite some deviations, results show that the temperature profiles are correctly depicted depending on the model’s angle of attack.

Document Type:Article
Additional Information:Published online: 27.04.2012, Online ISSN: 1868-2510
Title:Investigations on the thermal behaviour of CMC-based leading edges in hypersonic arc jet flows
AuthorsInstitution or Email of Authors
Kuhn, Markusmarkus.kuhn@dlr.de
Esser, BurkardBurkard.Esser@dlr.de
Dalenbring, MatsTotalförsvarets forskningsinstitut - FOI
Gülhan, AliAli.Guelhan@dlr.de
Cavagna, LucaTotalförsvarets forskningsinstitut - FOI
Journal or Publication Title:CEAS Space Journal
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:No
Page Range:pp. 61-76
Stavrinidis, ConstantinosUNSPECIFIED
Publisher:Springer Verlag, Vienna
Keywords:Arc-jet testing, Ceramic matrix composites, CMC, Leading edge, Fluid-structure interaction, Hypersonic flow
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - EU Projekte Raumtransport
Location: Köln-Porz , Stuttgart
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Über- und Hyperschalltechnologien
Institute of Structures and Design > Space System Integration
Deposited By: Markus Kuhn
Deposited On:23 Jul 2012 12:44
Last Modified:23 Mar 2015 07:35

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