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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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|
|Date:||09 June 2008|
|Journal or Publication Title:||ASME-Paper|
|In ISI Web of Science:||No|
|Keywords:||Aeroelasticity, CFD, TRACE|
|Event Title:||ASME Turbo Expo 2008: Power for Land, Sea and Air|
|Event Type:||international Conference|
|Event Dates:||2008-06-09 - 2008-06-13|
|HGF - Research field:||no assignement|
|HGF - Program:||no assignment|
|HGF - Program Themes:||no assignment|
|DLR - Research area:||Energy|
|DLR - Program:||E VG - Combustion and Gas Turbine Technologies|
|DLR - Research theme (Project):||E - Gasturbine (old)|
|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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