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Experiments on Transonic Flutter of a Two-Dimensional Supercritical Wing with Emphasis on the Non-Linear Effects.

Wendt, V. and Schewe, G. and Deyhle, H. (1997) Experiments on Transonic Flutter of a Two-Dimensional Supercritical Wing with Emphasis on the Non-Linear Effects. Vortrag bei NAL, Tokyo am 20.02.1997 und Universitaet Tokyo am 19.02.1997.

Full text not available from this repository.

Abstract

Flutter measurements were performed with a supercritical 2-dimensional wing (section: NLR 7301) primarily in the transonic flow regime. The rigid wing model was mounted in a symmetrical suspension system permitting two degree-of-freedom oscillations in heave and pitch. The motion of the wing was measured non-intrusively by optical methods and steady/unsteady forces are obtained by a piezo-electric balance. A non-intrusive flutter control system was applied based on a laser vibrometer and electrodynamic exciters. It permitted positive and negative feedback. The flutter tests were performed in the Mach number range 0.5<Ma<0.81 and the stagnation pressure range 0.38<p0< 1.2 bar. The transonic dip was found to be a very sharp one at Ma&#610.77. The dynamic pressure for flutter at this minimum is roughly half of the subsonic value (Ma &#61approx 0.5).

Item URL in elib:https://elib.dlr.de/39832/
Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=1997,
Title:Experiments on Transonic Flutter of a Two-Dimensional Supercritical Wing with Emphasis on the Non-Linear Effects.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wendt, V.UNSPECIFIEDUNSPECIFIED
Schewe, G.UNSPECIFIEDUNSPECIFIED
Deyhle, H.UNSPECIFIEDUNSPECIFIED
Date:1997
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:transonic flutter, non-linear effects, 2-dimensional wing, transonic dip, limit cycle oscillations
Event Title:Vortrag bei NAL, Tokyo am 20.02.1997 und Universitaet Tokyo am 19.02.1997
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 10:56

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