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Boundary Layer Transition Measurements on Hovering Helicopter Rotors by Infrared Thermography

Richter, Kai and Schülein, Erich (2014) Boundary Layer Transition Measurements on Hovering Helicopter Rotors by Infrared Thermography. 70th Annual Forum of the American Helicopter Society, 20. - 22. Mai 2014, Montreal, Canada.

Full text not available from this repository.

Official URL: https://vtol.org/annual-forum/forum-70

Abstract

Boundary layer transition detection by high speed infrared thermography was successfully demonstrated on a Mach scaled helicopter model rotor blade and on full scale helicopter main rotors. Transition detection was applied to the rotor blade upper surface. A detection technique is presented using single instantaneous infrared images, allowing the measurement of the beginning and the end of the transitional flow region. Transition results are discussed for both the model scale helicopter blade and for the main rotors of the DLR research helicopters BO105 and EC135-FHS in ground runs and in hover conditions.

Item URL in elib:https://elib.dlr.de/85393/
Document Type:Conference or Workshop Item (Speech)
Title:Boundary Layer Transition Measurements on Hovering Helicopter Rotors by Infrared Thermography
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Richter, Kaikai.richter (at) dlr.deUNSPECIFIED
Schülein, Ericherich.schuelein (at) dlr.deUNSPECIFIED
Date:2014
Refereed publication:Yes
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-13
Series Name:Conference Proceedings on CD-ROM
Status:Published
Keywords:Rotor blade, transition, hover, infrared thermography
Event Title:70th Annual Forum of the American Helicopter Society
Event Location:Montreal, Canada
Event Type:international Conference
Event Dates:20. - 22. Mai 2014
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
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Institute of Aerodynamics and Flow Technology > High Speed Configurations
Deposited By: Micknaus, Ilka
Deposited On:11 Jun 2014 13:44
Last Modified:17 Feb 2015 14:23

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