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Flutter Behaviour of an Adaptive Transonic Wing

Voß, R. (1999) Flutter Behaviour of an Adaptive Transonic Wing. International Forum on Aeroelasticity and Structural Dynamics 1999, Williamsburg (VA., USA), June 22-25, 1999.

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The influence of small local contour deformations (bumps), which are applied for shock control, on unsteady aerodynamics and aeroelastic stability is investigated numerically. First the mechanism of bumps and their impact on shock dynamics is outlined for the supercritical NLR7301 airfoil. The bump yields more complexity of shock dynamics for low frequency oscillations and a moderate change of lift and moment coefficients. For the 3D AMP Wing flow conditions with different lift values are investigated. 3D bumps for cases with a promounced shock can reduce the total steady drag by 3 to 6%, but may also change the flutter boundaries significantly. Applied aerodynamic CFD methods are based on linear and nonlinear potential theory. They are very fast and able to predict stability boundaries in good agreement with those from windtunnel tests for nonseparated transonic flow.

Item URL in elib:https://elib.dlr.de/14174/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2000,
Title:Flutter Behaviour of an Adaptive Transonic Wing
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Adaptive Wings, Shock Dynamics, Unsteady Aerodynamics, Supercritical Wings, Drag Reduction, Shock Control, Transonic Flutter
Event Title:International Forum on Aeroelasticity and Structural Dynamics 1999, Williamsburg (VA., USA), June 22-25, 1999
Organizer:CEAS / AIAA / ICASE / NASA Langley
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 21:30

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