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Instantaneous Flow Field Measurements for Propeller Aircraft and Rotorcraft Research

Raffel, M. and Kompenhans, J. and Kähler, C. and Ehrenfried, K. and Willert, C. and Pengel, K. and De Gregorio, F. (1998) Instantaneous Flow Field Measurements for Propeller Aircraft and Rotorcraft Research. In: 9th International Symposium on Applications of Laser Techniques to Fluid Mechanics, I, 19.6.1-19.6.10. 9th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lissabon/Portugal, 13.-16. Juli 1998.

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Abstract

This paper illustrates of instantaneous flow field measurements which were performed by the PIV group of DLR Göttingen during test campaigns in three different wind tunnel facilities of the Dutch-German Wind Tunnel foundation (DNW). The test results described first were obtained in the low speed tunnel LST in order to obtain detailed flow field information about the wake of a new high speed propeller model. The second test was performed in the transonic wind tunnel TWG in the frame of a German helicopter research project. Here the flow field above a pitching airfoil equipped with a flap driven by an integrated piezoelectric actuator has been observed with high spatial resolution. During the third test, stereoscopic flow field measurements were performed in the wake of a rotorcraft model in order to characterize the blade tip vortices at different flight conditions. The test was conducted in the 6x8m² open jet test section of the large low speed facility LLF which required observation distances exceeding 9 meters between camera and light sheet.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1999,
Title:Instantaneous Flow Field Measurements for Propeller Aircraft and Rotorcraft Research
Authors:
AuthorsInstitution or Email of Authors
Raffel, M.UNSPECIFIED
Kompenhans, J.UNSPECIFIED
Kähler, C.UNSPECIFIED
Ehrenfried, K.UNSPECIFIED
Willert, C.UNSPECIFIED
Pengel, K.DNW
De Gregorio, F.CIRA
Date:1998
Journal or Publication Title:9th International Symposium on Applications of Laser Techniques to Fluid Mechanics
Volume:I
Page Range:19.6.1-19.6.10
Editors:
EditorsEmail
Instituto Superior Tecnico Department of Mechanical Engineering Av. Rovisco Pais, 1096 Lisboa Codex PortugalUNSPECIFIED
Status:Published
Keywords:Flow Flied Measurements, Propeller Aircraft, Rotorcraft
Event Title:9th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lissabon/Portugal, 13.-16. Juli 1998
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L DT - Drehflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 20:25

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