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Measurement of Steady and Unsteady Airloads on a Stiffness Scaled Model of a Modern Transport Aircraft Wing.

Zingel, H. (1) and Hutin, P.M. (2) and Bublitz, P. (1993) Measurement of Steady and Unsteady Airloads on a Stiffness Scaled Model of a Modern Transport Aircraft Wing. In: DGLR-Bericht 91-06 (1991), 91-069, 91-069, pp. 120-131. Int. Forum on Aeroelasticity and Structural Dynamics 1991 Combined with a One-Day Workshop on Smart Material Systems and Structures, June 3-6, 1991, Eurogress Center, Aachen..

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Abstract

Extensive wind tunnel tests have been carried out on a modern transport aircraft wing in transonic flow. The objective was to measure steady and unsteady pressure distributions, and to investigate the influence of the variable twist distribution of an elastic wing. For this purpose the wind tunnel model was scaled in stiffness, so that the twist distribution was similar to a representative aircraft, and changed with loads variation. The extensive model instrumentation consisted of opto-electronical equipment to measure the actual wing twist distribution. The forced model oscillation in pitch and bending up to a reduced frequency of about 0,7 (based on a reference chord) was measured with conventional accelerometers. A piezo-electrical balance was used for steady and unsteady forces measurement. Steady and unsteady pressures were measured simultaneously with 290 pressure transducers. Investigated parameters were Mach number, stagnation pressure, angle of incidence, reduced frequency and oscillation amplitude.

Item URL in elib:https://elib.dlr.de/39596/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1993,
Title:Measurement of Steady and Unsteady Airloads on a Stiffness Scaled Model of a Modern Transport Aircraft Wing.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Zingel, H. (1)UNSPECIFIEDUNSPECIFIED
Hutin, P.M. (2)UNSPECIFIEDUNSPECIFIED
Bublitz, P.UNSPECIFIEDUNSPECIFIED
Date:1993
Journal or Publication Title:DGLR-Bericht 91-06 (1991), 91-069
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:91-069
Page Range:pp. 120-131
Series Name:DGLLR-Bericht 91-06
Status:Published
Keywords:Flutter, Aeroelasticity, Unsteady Aerodynamics, Aeroelastic Model, Wind Tunnel Test.
Event Title:Int. Forum on Aeroelasticity and Structural Dynamics 1991 Combined with a One-Day Workshop on Smart Material Systems and Structures, June 3-6, 1991, Eurogress Center, Aachen.
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 10:48

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