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Experimental Investigation of the Aeroelastic Behavior of a Laminar Airfoil in Transonic Flow

Hebler, Anne and Schojda, Lukas and Mai, Holger (2013) Experimental Investigation of the Aeroelastic Behavior of a Laminar Airfoil in Transonic Flow. In: Proceedings "IFASD 2013". International Forum on Aeroelasticity and Structural Dynamics (IFASD), 24. - 26. Juni 2013, Bristol, England.

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The unsteady flow around an oscillating CAST 10-2 airfoil model was investigated at Mach numbers relevant for cruise flight of transport aircraft. Unsteady pressure sensors and hot-film anemometry were used to characterize the unsteady flow and the laminar-turbulent transition on the airfoil. Results are presented for subsonic and transonic Mach numbers focusing at the transonic regime at M = 0.750. Thereby steady measurements serve as a starting point to gain a better understanding of flow physics. Transition positions, pressure distributions and the resulting lift coefficients are discussed and provide a deeper insight in the nonlinearity of the lift polar. Unsteady hot-film signals are discussed for one period and reveal a temporal asymmetry of the flow state and of the integral values lift and moment coefficient. Derivatives from these coefficients as functions of reduced frequency and amplitude are presented.

Item URL in elib:https://elib.dlr.de/83897/
Document Type:Conference or Workshop Item (Speech)
Title:Experimental Investigation of the Aeroelastic Behavior of a Laminar Airfoil in Transonic Flow
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Hebler, Anneanne.hebler (at) dlr.deUNSPECIFIED
Schojda, Lukaslukas.schojda (at) dlr.deUNSPECIFIED
Mai, Holgerholger.mai (at) dlr.deUNSPECIFIED
Date:June 2013
Journal or Publication Title:Proceedings "IFASD 2013"
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:laminar airfoil, laminar-turbulent transition, hot-film anemometry, CAST 10-2, oscillating airfoil
Event Title:International Forum on Aeroelasticity and Structural Dynamics (IFASD)
Event Location:Bristol, England
Event Type:international Conference
Event Dates:24. - 26. Juni 2013
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > High Speed Configurations
Institute of Aeroelasticity > Aeroelastic Experiments
Deposited By: Hebler, Anne
Deposited On:05 Sep 2013 16:05
Last Modified:08 May 2014 23:24

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