Gardner, Anthony D. and Wolf, C. Christian and Raffel, Markus (2019) Review of measurement techniques for unsteady helicopter rotor flows. Progress in Aerospace Sciences, 111, pp. 1-17. Elsevier. doi: 10.1016/j.paerosci.2019.100566. ISSN 0376-0421.
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Official URL: https://doi.org/10.1016/j.paerosci.2019.100566
Abstract
The helicopter group at the DLR in Göttingen has been actively involved in the development of measurement techniques for unsteady flows, particularly as they apply to the problems found in unsteady rotor blade aerodynamics. This includes the development and validation of new techniques for the detection of dynamically moving boundary layer transition, and for the detection of dynamic stall and other transient flow separation events. These new techniques include pressure sensor analysis, differential infrared thermography, local infrared thermography and the automated analysis of hot-film data. Particle image velocimetry (PIV) and background oriented schlieren (BOS) have been used for the analysis of the unsteady off-body flow, and synchronised PIVBOS-pressure measurements have allowed direct comparisons between different methods. The Lagrangian volumetric PIV variant, shake-the-box, has been used to analyse secondary vortex structures in the vortex wake. This review article will give an overview of the advances in that group, as well as placing their activities in the context of international advances in these areas.
Item URL in elib: | https://elib.dlr.de/129018/ | ||||||||||||
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Document Type: | Article | ||||||||||||
Title: | Review of measurement techniques for unsteady helicopter rotor flows | ||||||||||||
Authors: |
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Date: | November 2019 | ||||||||||||
Journal or Publication Title: | Progress in Aerospace Sciences | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | Yes | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | Yes | ||||||||||||
In ISI Web of Science: | Yes | ||||||||||||
Volume: | 111 | ||||||||||||
DOI : | 10.1016/j.paerosci.2019.100566 | ||||||||||||
Page Range: | pp. 1-17 | ||||||||||||
Editors: |
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Publisher: | Elsevier | ||||||||||||
ISSN: | 0376-0421 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | Unsteady flow, Measurement techniques, Helicopter rotors, Pressure transducer, PSP, Boundary layer transition, Hot-film anemometry, TSP, DIT, IR thermography, Dynamic stall, PIV, BOS, Vortex | ||||||||||||
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 (old) | ||||||||||||
Location: | Göttingen | ||||||||||||
Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Helicopter, GO | ||||||||||||
Deposited By: | Winkels, Elisabeth | ||||||||||||
Deposited On: | 17 Sep 2019 17:21 | ||||||||||||
Last Modified: | 06 Aug 2020 10:58 |
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