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Infrared Thermography and DIT of Quadcopter Rotor Blades Using Laser Heating

Thiessen, Raffael and Schülein, Erich (2019) Infrared Thermography and DIT of Quadcopter Rotor Blades Using Laser Heating. In: proceedings - 15th International Workshop on Advanced Infrared Technology and Applications (AITA 2019). MDPI. 15th International Workshop on Advanced Infrared Technology and Applications (AITA 2019), 16.-19. Sept. 2019, Florence, Italien. DOI: 10.3390/proceedings2019027031

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Official URL: https://doi.org/10.3390/proceedings2019027031

Abstract

A measuring method to detect wall flow topologies by active infrared thermography was developed. Quadcopter rotor blades were studied in typical hover and forward flight conditions, while using a high-power infrared laser to heat the blade surface. By this, the distance between heat source and measuring object could be significantly increased compared to conventional heat sources. The resulting images show little blurring at high signal-to-noise ratios. In steady-state flow conditions, wall flow topologies could be detected reliably and show good agreement with performed oil-film interferometry measurements. Wind tunnel experiments at forward flight conditions were conducted and indicate unsteady shifts of the transition location.

Item URL in elib:https://elib.dlr.de/129603/
Document Type:Conference or Workshop Item (Speech)
Title:Infrared Thermography and DIT of Quadcopter Rotor Blades Using Laser Heating
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Thiessen, RaffaelUNSPECIFIEDUNSPECIFIED
Schülein, ErichErich.Schuelein (at) dlr.dehttps://orcid.org/0000-0002-1125-8504
Date:16 September 2019
Journal or Publication Title:proceedings - 15th International Workshop on Advanced Infrared Technology and Applications (AITA 2019)
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.3390/proceedings2019027031
Editors:
EditorsEmail
UNSPECIFIED: CEUR Workshop Proceedings
Publisher:MDPI
Status:Published
Keywords:infrared thermography, boundary-layer transition, rotor blades, oil-film interferometry
Event Title:15th International Workshop on Advanced Infrared Technology and Applications (AITA 2019)
Event Location:Florence, Italien
Event Type:international Conference
Event Dates:16.-19. Sept. 2019
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 - Military Technologies
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > High Speed Configurations, GO
Deposited By: Schülein, Dr.rer.nat. Erich
Deposited On:17 Oct 2019 14:24
Last Modified:17 Oct 2019 14:24

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