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Particle Image Velocimetry in Helicopter Aerodynamics: Developments, Challenges and Trends

Raffel, Markus and Mulleners, Karen and Kindler, Kolja and Heineck, James T. (2012) Particle Image Velocimetry in Helicopter Aerodynamics: Developments, Challenges and Trends. In: 68th American Helicopter Society International Annual Forum 2012, Proceedings of a meeting held 1-3 May 2012, Fort Worth, Texas, USA. Vertical Flight Technical Society, pp. 544-552. Curran Associates, Inc.. American Helicopter Society 68th Annual Forum, 01.-03. Mai 2012, Fort Worth, Texas, USA. ISBN 978-1-62276-051-0.

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Abstract

New developments in measurement technology keep driving our experimental capabilities with regard to helicopter aerodynamics. The inherently unsteady nature of the helicopter flow field and the technical complexity of helicopter itself present a vast number of specific challenges to experimentalists. To illustrate the impact of the technological advancements on the way we study helicopter aerodynamics over the past two decades, we present some recent Particle Image Velocimetry (PIV) applications on blade tip vortices and dynamic stall, assessing the particular demands of studying rotary wing flows. We focus on time-resolved, tomographic and large-scale PIV applications. Furthermore, the combination of PIV with complementary measurement techniques like Background Oriented Schlieren method (BOS) is discussed and its potential contribution to a more detailed understanding of the underlying aerodynamics effects is outlined. Based on some foreseeable trends, finally, a glimpse into the future of PIV in helicopter aerodynamics is ventured.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Particle Image Velocimetry in Helicopter Aerodynamics: Developments, Challenges and Trends
Authors:
AuthorsInstitution or Email of Authors
Raffel, MarkusUNSPECIFIED
Mulleners, KarenLeibniz Universität Hannover
Kindler, KoljaUNSPECIFIED
Heineck, James T.NASA Ames Research Center, Moffett Field, CA, USA
Date:July 2012
Journal or Publication Title:68th American Helicopter Society International Annual Forum 2012
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:Proceedings of a meeting held 1-3 May 2012, Fort Worth, Texas, USA. Vertical Flight Technical Society
Page Range:pp. 544-552
Publisher:Curran Associates, Inc.
ISBN:978-1-62276-051-0
Status:Published
Keywords:helicopter aerodynamics, Particle Image Velocitmetry (PIV), rotary wing flows
Event Title:American Helicopter Society 68th Annual Forum
Event Location:Fort Worth, Texas, USA
Event Type:international Conference
Event Dates:01.-03. Mai 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Elisabeth Winkels
Deposited On:19 Sep 2012 15:15
Last Modified:19 Sep 2012 15:15

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