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Aerodynamic Mistuning of Structurally Coupled Blades

Stüer, Heinrich and Schmitt, Stefan and Ashcroft, Graham (2008) Aerodynamic Mistuning of Structurally Coupled Blades. In: ASME-Paper. ASME Turbo Expo 2008: Power for Land, Sea and Air, 2008-06-09 - 2008-06-13, Berlin.

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Abstract

This paper discusses the impact of aerodynamic mistuning in the context of a structurally coupled blade system. The aerodynamic mistuning assumes a difference in blade loading (between adjacent blades) but no change in eigenfrequency or modeshape. Thus, emphasis is placed on the profile shape impact of transonic rotor blades on aeroelasic damping. An example aeroelasic calculation of the proposed mistuning strategy is present for a coupled blade arrangement. The impact of mistuning compared to the tuned datum profile is discussed. It is shown that there exist significant differences for the two configurations but that the net impact of mistuning is small for the coupled system investigated compared to a freestanding blade design.

Document Type:Conference or Workshop Item (Paper)
Title:Aerodynamic Mistuning of Structurally Coupled Blades
Authors:
AuthorsInstitution or Email of Authors
Stüer, HeinrichSiemens PG
Schmitt, StefanSiemens PG
Ashcroft, GrahamUNSPECIFIED
Date:9 June 2008
Journal or Publication Title:ASME-Paper
Refereed publication:Yes
In ISI Web of Science:No
Status:Published
Keywords:Aeroelasticity, CFD, TRACE
Event Title:ASME Turbo Expo 2008: Power for Land, Sea and Air
Event Location:Berlin
Event Type:international Conference
Event Dates:2008-06-09 - 2008-06-13
Organizer:ASME
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Energy
DLR - Program:E VG - Combustion and Gas Turbine Technologies
DLR - Research theme (Project):E - Gasturbine (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Numerical Methodes
Deposited By: Dr.(PH.D.) Graham Ashcroft
Deposited On:02 Feb 2009
Last Modified:27 Apr 2009 15:46

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