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Mirror based image de-rotation for aerodynamic rotor measurements

Raffel, Markus and Heineck, James T. (2014) Mirror based image de-rotation for aerodynamic rotor measurements. AIAA Journal, 52 (6), pp. 1337-1341. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.J052836. ISSN 0001-1452.

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Official URL: http://arc.aiaa.org/doi/pdf/10.2514/1.J052836


The current level of technology allows image based temperature, pressure and skin friction measurements at exposure times in the order of milliseconds. Though CCD and CMOS sensors of increasing sensitivity are continuously under development and being brought into the market, it will take some time before the majority of recording techniques allows for exposure times short enough to avoid motion blur during rotating blade recording. It has been demonstrated that image de-rotation can be achieved with a rotating mirror system. Such a system, which is able to provide very high-speed and easily adjustable image de-rotation, has been described in this article. Problems such as the angular control of the rotating mirror and its synchronization with the camera have been solved successfully. A theoretical model detailed enough to choose appropriate recording parameters for the application of a rotating mirror system has been presented.

Item URL in elib:https://elib.dlr.de/85554/
Document Type:Article
Title:Mirror based image de-rotation for aerodynamic rotor measurements
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Raffel, Markusmarkus.raffel (at) dlr.deUNSPECIFIED
Heineck, James T.NASA Ames Research Center, Moffett Field, CA, USAUNSPECIFIED
Journal or Publication Title:AIAA Journal
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.2514/1.J052836
Page Range:pp. 1337-1341
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Series Name:Technical Notes
Keywords:PSP, TSP, infrared thermography, rotor blade, rotating mirror
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 of Aerodynamics and Flow Technology > Helicopters
Deposited By: Micknaus, Ilka
Deposited On:19 Jun 2014 14:49
Last Modified:08 Mar 2018 18:42

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