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Effects of a Contour Bump on the Unsteady Transonic Aerodynamic Forces of the AMP Wing

Send, W. and Voß, R. (1999) Effects of a Contour Bump on the Unsteady Transonic Aerodynamic Forces of the AMP Wing. In: New Results in Numerical and Experimental Fluid Mechanics II, Volume 72, pp. 434-441. Vieweg. 13. DGLR-Fach-Symposium der STAB. ISBN 3-528-03122-0

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The effects of a contour bump on steady and unsteady aeordynamics are investigated for both a 2D profile section and a 3D wing, e.g. the AMP model. The supercritical airfoil NLR7301 has been chosen as the 2D case, for which the pressure distributions in steady and unsteady transonic flow demonstrate differences between cases with and without bump. For the AMP wing, a 3D bump is shaped in such manner that it traces the shock area of the elastically deformed wing. Steady and unsteady pressure coefficients are shown for both configurations. The unsteady transonic aerodynamic forces of the AMP wing are subject to flutter calculations. A first comparison of the flutter boundaries with and without bump indicates that the presence of a bump, with its desired effect of drag reduction in transonic flow, also reduces flutter stability for the same physical reasons.

Item URL in elib:https://elib.dlr.de/14549/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Effects of a Contour Bump on the Unsteady Transonic Aerodynamic Forces of the AMP Wing
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Journal or Publication Title:New Results in Numerical and Experimental Fluid Mechanics II
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Volume:Volume 72
Page Range:pp. 434-441
Wolfgang Nitsche, UNSPECIFIED
Hans-Joachim Heinemann, UNSPECIFIED
Reinhard Hilbig, UNSPECIFIED
Series Name:Notes on Numerical Fluid Mechanics
Keywords:aerodynamic characteristics, unsteady aerodynamics, flutter, adaptive wing, contour bump, AMP model, NLR7301
Event Title:13. DGLR-Fach-Symposium der STAB
Organizer:Technische Universität München - Lehrstuhl für Fluidmechanik
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 21:59

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