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Potential of aeroelastic tailoring to improve flutter stability of turbomachinery compressor blades

Reiber, Christoph and Blocher, Michael (2017) Potential of aeroelastic tailoring to improve flutter stability of turbomachinery compressor blades. In: Proceedings of 12th European Conference on Turbomachinery Fluid dynamics & Thermodynamics. ETC 2017 - 12th European Turbomachinery Conference, 03.-07. Apr. 2017, Stockholm, Schweden.

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Abstract

To determine the potential of aeroelastic tailoring to improve flutter stability of carbon fiber turbomachinery compressor blades the structural dynamic and aeroelastic behavior of ten different laminate layups were compared. At first an operating point at off-design conditions was identified as flutter critical. Afterwards the dependency between Laminate properties and eigenbehavior and between eigenbehavior and aerodynamic stability under these off-design conditions were described. The results show that for every of the first three natural oscillations certain conditions for the eigenmode and eigenfrequency have to be satisfied to evoke aerodynamically stable be- havior. Considering these constraints just one of the investigated laminates is suitable to ensure flutter stability for these certain flow conditions. This very small variety of applicable laminate layups shows the complexity to design aerodynamically stable compressor blades but also the great potential of aeroelastic tailoring to improve the flutter stability of carbon fiber turbomachinery compressor blades.

Item URL in elib:https://elib.dlr.de/113270/
Document Type:Conference or Workshop Item (Speech)
Title:Potential of aeroelastic tailoring to improve flutter stability of turbomachinery compressor blades
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Reiber, Christophchristoph.reiber (at) dlr.deUNSPECIFIED
Blocher, Michaelmichael.blocher (at) dlr.deUNSPECIFIED
Date:April 2017
Journal or Publication Title:Proceedings of 12th European Conference on Turbomachinery Fluid dynamics & Thermodynamics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:aeroelasticity, compressor, turbomaschinery, flutter, aeroelastic tailoring
Event Title:ETC 2017 - 12th European Turbomachinery Conference
Event Location:Stockholm, Schweden
Event Type:international Conference
Event Dates:03.-07. Apr. 2017
Organizer:European Turbomachinery Society
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:propulsion systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Fan and Compressor Technologies
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: Reiber, Christoph
Deposited On:19 Jul 2017 08:34
Last Modified:01 Aug 2019 10:56

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