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Kindler, Kolja and Mulleners, Karen and Raffel, Markus (2013) Towards In-Flight Measurements of Helicopter Blade Tip Vortices. In: Research Topics in Aerospace Advanced In-Flight Measurement Techniques. Springer Verlag, Heidelberg New York Dordrecht London. pp. 171-185. doi: 10.1007/978-3-642-34738-2_11. ISBN 978-3-642-34737-5. ISSN 2194-8240.
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Official URL: http://link.springer.com/book/10.1007/978-3-642-34738-2/page/1
Abstract
In the framework of the AIM project the near field of the blade tip vortex of a full-scale helicopter in simulated hover flight was investigated by combining three-component Particle Image Velocimetry and Background Oriented Schlieren measurements. The velocity field measurements in the range of wake ages of 1° to 30° in azimuth provided a reference for a quantitative analysis of the Schlieren results yielding vortex core density estimates. Ongoing vortex roll-up was observed at 1° while considerable aperiodicity was persistent thereafter. The vortex parameters for vortices older than 1° were consistent with the Scully vortex model. However, the particular challenges of full-scale, outdoor testing, especially the limited spatial resolution and aperiodicity effects, yielded a higher level of measurement uncertainty as compared to sub-scale experiments.
| Item URL in elib: | https://elib.dlr.de/66496/ | ||||||||||||||||||||
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| Document Type: | Contribution to a Collection | ||||||||||||||||||||
| Additional Information: | eBook: 978-3-642-34738-2, eISSN: 2194-8259, DOI: 10.1007/978-3-642-34738-2_11, Chapter 11 | ||||||||||||||||||||
| Title: | Towards In-Flight Measurements of Helicopter Blade Tip Vortices | ||||||||||||||||||||
| Authors: |
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| Date: | 2013 | ||||||||||||||||||||
| Journal or Publication Title: | Research Topics in Aerospace | ||||||||||||||||||||
| Refereed publication: | Yes | ||||||||||||||||||||
| Open Access: | Yes | ||||||||||||||||||||
| Gold Open Access: | No | ||||||||||||||||||||
| In SCOPUS: | No | ||||||||||||||||||||
| In ISI Web of Science: | No | ||||||||||||||||||||
| DOI: | 10.1007/978-3-642-34738-2_11 | ||||||||||||||||||||
| Page Range: | pp. 171-185 | ||||||||||||||||||||
| Editors: |
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| Publisher: | Springer Verlag, Heidelberg New York Dordrecht London | ||||||||||||||||||||
| Series Name: | Advanced In-Flight Measurement Techniques | ||||||||||||||||||||
| ISSN: | 2194-8240 | ||||||||||||||||||||
| ISBN: | 978-3-642-34737-5 | ||||||||||||||||||||
| Status: | Published | ||||||||||||||||||||
| Keywords: | blade tip vortices, full-scale testing, PIV, BOS | ||||||||||||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||||||||||
| HGF - Program: | Aeronautics | ||||||||||||||||||||
| HGF - Program Themes: | Rotorcraft (old) | ||||||||||||||||||||
| DLR - Research area: | Aeronautics | ||||||||||||||||||||
| DLR - Program: | L RR - Rotorcraft Research | ||||||||||||||||||||
| DLR - Research theme (Project): | L - The Virtual Aerodynamic Rotorcraft (old) | ||||||||||||||||||||
| Location: | Göttingen , Köln-Porz | ||||||||||||||||||||
| Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Helicopters | ||||||||||||||||||||
| Deposited By: | Mulleners, Karen | ||||||||||||||||||||
| Deposited On: | 08 May 2013 14:33 | ||||||||||||||||||||
| Last Modified: | 03 Aug 2023 10:33 |
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