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Design and Testing of a Model Wing Section for a Human Powered Aircraft

Mardanpour, Pezhman and Krüger, Wolf and Haddadpour, H. and Hoffmann, Diethelm (2006) Design and Testing of a Model Wing Section for a Human Powered Aircraft. In: ICAS 2006 - Proceedings. Optimage Ltd., Edinburgh, UK. ICAS 2006 - 25th International Congress of the Aeronautical Sciences, 2006-09-03 - 2006-09-08, Hamburg, Germany (Europe). ISBN 0-9533991-7-6

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Abstract

Human powered aircraft (HPA) have a number of special design features. They are of a high aspect ratio, have a very low weight and are consequently equipped with very flexible wings. The aeroelastic behaviour of such aircraft is of great interest. At the Institute of Aeroelasticity of the German Aerospace Center (DLR), a 1:3 scale section of a light-weight wing has been built and tested in an open wind tunnel with comparable Reynolds number of model and original HPA. Representative values for geometry and stiffness were derived from an original HPA design. During the experiment, vibration tests of the structure were performed. During the wind tunnel test, static and transient investigations were performed. Finally, using a modified mass distribution, the flutter point was determined numerically and experimentally, and limit cycle oscillations (LCO) could be observed in the experiment. Measurements indicate that the LCO is due to massive flow separation at positive and negative high angles of attack.

Item URL in elib:https://elib.dlr.de/46895/
Document Type:Conference or Workshop Item (Paper)
Title:Design and Testing of a Model Wing Section for a Human Powered Aircraft
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mardanpour, PezhmanSharif University of Technology, Aerospace Engineering, Tehran, IranUNSPECIFIED
Krüger, WolfInstitute of AeroelasticityUNSPECIFIED
Haddadpour, H.Sharif University of Technology, Aerospace Engineering, Tehran, IranUNSPECIFIED
Hoffmann, DiethelmInstitute of AeroelasticityUNSPECIFIED
Date:2006
Journal or Publication Title:ICAS 2006 - Proceedings
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Publisher:Optimage Ltd., Edinburgh, UK
ISBN:0-9533991-7-6
Status:Published
Keywords:aeroelasticity, human powered aircraft, light-weight wing, LCO
Event Title:ICAS 2006 - 25th International Congress of the Aeronautical Sciences
Event Location:Hamburg, Germany (Europe)
Event Type:international Conference
Event Dates:2006-09-03 - 2006-09-08
Organizer:German Society for Aeronautics and Astronautics - Lilienthal-Oberth e.V.
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):L - Flexible Aircraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: Erdmann, Daniela
Deposited On:20 Apr 2007
Last Modified:27 Apr 2009 13:26

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