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A LASER plateau size optimization strategy for TMF tests

Riccius, Jörg and Zametaev, E. B. and Gernoth, Andreas and Schwarz, W. and Keppeler, J. (2009) A LASER plateau size optimization strategy for TMF tests. In: Proceedings of the 3rd EUCASS Conference. 3rd EUropean Conference for AeroSpace Sciences, 06.-09. July 2009, Versailles.


Official URL: http://www.eucass2009.com/


The key component of the Thermo-Mechanical Fatigue (TMF) - test bench at DLR Lampoldshausen is a diode LASER with an optical output power of 11 kW. With the currently built-in LASER optics, heat flux values up to 8 MW/m2 can be obtained on a LASER beam plateau area of 51 mm x 19 mm. This LASER power density is sufficient to assess the life expectation of nozzle structures and to serve as a validation experiment for nozzle life prediction models. However, for the thermo-mechanical fatigue testing and validation of chamber wall structures, higher LASER power densities are needed. The cost-saving alternative to an increase of the LASER power is to replace the currently available LASER optics by a new LASER optics, leading to a smaller LASER beam plateau size and therefore, resulting in a larger LASER power density. In the current publication, an optimization strategy for the size of the LASER beam plateau area of the new optics module is shown.

Item URL in elib:https://elib.dlr.de/62424/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:A LASER plateau size optimization strategy for TMF tests
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Riccius, JörgJoerg.Riccius (at) dlr.deUNSPECIFIED
Zametaev, E. B.Evgeny.Zametaev (at) dlr.deUNSPECIFIED
Gernoth, AndreasAndreas.Gernoth (at) dlr.deUNSPECIFIED
Schwarz, W.Waldemar.Schwarz (at) astrium.eads.netUNSPECIFIED
Keppeler, J.Johann.Keppeler (at) astrium.eads.netUNSPECIFIED
Date:6 July 2009
Journal or Publication Title:Proceedings of the 3rd EUCASS Conference
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:LASER, TMF, Prüfstand, Validierung, Finite Elemente Analysen, FEM, thermische Analysen, Optimierung, CG-Verfahren, Verfahren der konjugierten Gradienten
Event Title:3rd EUropean Conference for AeroSpace Sciences
Event Location:Versailles
Event Type:international Conference
Event Dates:06.-09. July 2009
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignment
DLR - Research area:Space
DLR - Program:W - no assignment
DLR - Research theme (Project):W - no assignment (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Technologie
Deposited By: Riccius, Dr. Jörg
Deposited On:14 Jan 2010 09:08
Last Modified:31 Jul 2019 19:26

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