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On the Accoustics of Rocket Combustors Euqipped with Quarter Wave Absorbers

Oschwald, Michael and Marpert, Mark P. (2009) On the Accoustics of Rocket Combustors Euqipped with Quarter Wave Absorbers. In: Proceedings of the 3rd EUCASS Conference. 3rd European Conference For Aerospace Sciences - EUCASS, 6. - 9. July, 2009, Versailles, France.

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The acoustic resonance spectrum and the dissipation of specific modes in combustors equipped with absorbers have been investigated experimentally and numerically. It is found that the application of absorber rings to a combustor is changing its resonance behavior significantly. Based on the acoustic fields obtained by 3D-modal analysis the damping behavior for modes is predicted and compared to measurements. There is good agreement between prediction and experimental data with respect to the general trend of the dependence of damping on the absorber length. However the experimentally determined disspation rates are significantly larger than the predicted values.

Item URL in elib:https://elib.dlr.de/62421/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:On the Accoustics of Rocket Combustors Euqipped with Quarter Wave Absorbers
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Oschwald, MichaelMichael.Oschwald (at) dlr.dehttps://orcid.org/0000-0002-9579-9825
Marpert, Mark P.Mark.Marpert (at) dlr.deUNSPECIFIED
Journal or Publication Title:Proceedings of the 3rd EUCASS Conference
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:accoustics, rocket combustor, absorber
Event Title:3rd European Conference For Aerospace Sciences - EUCASS
Event Location:Versailles, France
Event Type:Conference
Event Dates:6. - 9. 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: Hanke, Michaela
Deposited On:13 Jan 2010 11:25
Last Modified:01 Dec 2018 19:47

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