elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Background oriented stereoscopic schlieren (BOSS) for full-scale helicopter vortex characterization

Raffel, M. and Tung, C. and Richard, H. and Yu, Y. and Meier, G.E.A (2000) Background oriented stereoscopic schlieren (BOSS) for full-scale helicopter vortex characterization. In: The Millennium 9th International Symposium on Flow Visualization, Conference Proceedings, 450-1-450-11. CD. 9th International Symposium on Flow Visualization, Heriot-Watt University, Edinburgh, UK, August 2000. ISBN 0-9533991-17.

Full text not available from this repository.

Abstract

In this paper we present the application of a novel schlieren technique for two different helicopter tests. The optical method is referred to as “Background Oriented Schlieren” (BOS) in the following. Additionally the differences between BOS and an extension of it, the reference-free stereoscopic arrangement (BOSS in the following), will be discussed. Experimental studies have been carried out to investigate details of the vortex generation next to the blade tips of two different helicopters, an Eurocopter BK117 and an Sikorsky UH60. The background oriented techniques seem to well complete other optical techniques like shadowgraphy or focussing schlieren methods and yield additional quantitative information. Furthermore, they allow - in contrast to laser based techniques - to study the Reynolds-number depending vortex development in full-scale flight tests more easily.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2003, monograph_id=Paper 450,
Title:Background oriented stereoscopic schlieren (BOSS) for full-scale helicopter vortex characterization
Authors:
AuthorsInstitution or Email of Authors
Raffel, M.UNSPECIFIED
Tung, C.Aeromechanics Branch, Army/NASA Rotorcraft Division
Richard, H.UNSPECIFIED
Yu, Y.Aeromechanics Branch, Army/NASA Rotorcraft Division
Meier, G.E.AUNSPECIFIED
Date:2000
Journal or Publication Title:The Millennium 9th International Symposium on Flow Visualization
Volume:Conference Proceedings
Page Range:450-1-450-11
Editors:
EditorsEmail
Carlomagno, G.M.UNSPECIFIED
Grant, I.UNSPECIFIED
Publisher:CD
ISBN:0-9533991-17
Status:Published
Keywords:density, visualization, background, schlieren, full-scale, vortex, helicopter
Event Title:9th International Symposium on Flow Visualization, Heriot-Watt University, Edinburgh, UK, August 2000
Organizer:University Edinburgh
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
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 21:01

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.