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Status of Pressure Sensitive Paint Systems used in DNW

Bruse, Martin and Klein, Christian and Henne, Ulrich and Yorita, Daisuke and Ondrus, Vladimir and Beifuss, Uwe and Rütten, Markus (2014) Status of Pressure Sensitive Paint Systems used in DNW. 122th Meeting of STAI, 05. - 07. Oct. 2014, Aussois, France.

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Official URL: http://stai.dnw.aero/schedule.html


In DNW a Pressure Sensitive Paint System (PSP) is in use at several wind tunnels which was originally developed by DLR and based on the intensity method. The intensity method has some drawbacks when operated in an industrial wind tunnel. Due to the necessity of image collection for wind off and wind on constellation the tunnel occupation time is nearly doubled. Although the lifetime-based PSP measurement has several advantages compared to the intensity-based method, it is still not a commonly-used PSP technique in wind tunnel testing. One problem is a non-uniform distribution of the measured lifetime over the coated surface. Theoretically PSP lifetime should be independent of the excitation light distribution, dye concentration and paint thickness; however, the measured lifetimes over the coated PSP surface are sometimes not uniform. As a first step, PtTFPP-based PSP for the lifetime-based method has been developed by DLR to improve this lifetime uniformity. In addition special attention was paid to the effect of basecoat material and polymer. The lifetime-based PSP method was applied to a transonic wind tunnel test. As a result, quantitative pressure distributions can be obtained by the lifetime-based method at M = 0.5 and 0.3. The PSP results show characteristic pressure distributions on a delta wing model which are compared to the results with the intensity method and numerical data.

Item URL in elib:https://elib.dlr.de/91681/
Document Type:Conference or Workshop Item (Speech)
Title:Status of Pressure Sensitive Paint Systems used in DNW
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Bruse, Martinmartin.bruse (at) dnw.aeroUNSPECIFIED
Klein, Christianchristian.klein (at) dlr.deUNSPECIFIED
Henne, Ulrichulrich.henne (at) dlr.deUNSPECIFIED
Yorita, Daisukedaisuke.yorita (at) dlr.deUNSPECIFIED
Ondrus, VladimirUni HohenheimUNSPECIFIED
Beifuss, UweUni HohenheimUNSPECIFIED
Rütten, Markusmarkus.ruetten (at) dlr.deUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:PSP, Lifetime
Event Title:122th Meeting of STAI
Event Location:Aussois, France
Event Type:international Conference
Event Dates:05. - 07. Oct. 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation (old)
Location: Göttingen
Institutes and Institutions:German-Dutch Windtunnels > Business Unit Göttingen und Köln (GUK)
Institute of Aerodynamics and Flow Technology > Experimental Methods
Institute of Aerodynamics and Flow Technology > High Speed Configurations
Deposited By: Micknaus, Ilka
Deposited On:05 Dec 2014 15:17
Last Modified:08 Dec 2014 09:47

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