Heineck, James T. und Overmeyer, Austin und Spooner, Hanna und Gardner, Anthony und Weiss, Armin und Raffel, Markus (2020) Transition measurements of upper and lower rotor blade surfaces in forward flight with thermography. In: AIAA Aviation 2020 Forum. AIAA Aviation Forum 2020, 2020-06-15 - 2020-06-19, Virtuell (Reno, NV; USA). doi: 10.2514/6.2020-3103. ISBN 978-162410598-2.
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Offizielle URL: https://doi.org/10.2514/6.2020-3103
Kurzfassung
Thermography allows for imaging the location of laminar-to-turbulent boundary layer transition on surfaces in air flows. The determination of BL transition of rotor blades was done in 2017 on the lower surface of a rotor blade in forward flight in the NASA Langley 14- by 22-Foot Subsonic Tunnel Subsonic Wind Tunnel. This article reports on the follow-on experiment in the same facility and the same blades where thermography was performed on both upper and lower surface synchronously, with the upper surface mapped throughout the full azimuthal range. Blade-tracking rotating mirrors were used for each thermal camera and were synchronized for simultaneous image acquisition. Furthermore, the Differential Infrared Thermography (DIT) technique depicts the unsteady nature of the BL transition in forward flight. Results are presented and discussed. These data are the first ever recorded of both surfaces of a rotor in forward flight.
elib-URL des Eintrags: | https://elib.dlr.de/135952/ | ||||||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||
Titel: | Transition measurements of upper and lower rotor blade surfaces in forward flight with thermography | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 8 Juni 2020 | ||||||||||||||||||||||||||||
Erschienen in: | AIAA Aviation 2020 Forum | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||
DOI: | 10.2514/6.2020-3103 | ||||||||||||||||||||||||||||
Herausgeber: |
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ISBN: | 978-162410598-2 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Differential Infrared Thermography, DIT, boundary layer transition, laminar, turbulent, helicopter, rotor blade, wind tunnel | ||||||||||||||||||||||||||||
Veranstaltungstitel: | AIAA Aviation Forum 2020 | ||||||||||||||||||||||||||||
Veranstaltungsort: | Virtuell (Reno, NV; USA) | ||||||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 15 Juni 2020 | ||||||||||||||||||||||||||||
Veranstaltungsende: | 19 Juni 2020 | ||||||||||||||||||||||||||||
Veranstalter : | AIAA | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||||||
HGF - Programmthema: | Hubschrauber | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | L RR - Rotorcraft Research | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Der virtuelle Drehflügler (alt) | ||||||||||||||||||||||||||||
Standort: | Göttingen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Hubschrauber, GO Institut für Aerodynamik und Strömungstechnik > Experimentelle Verfahren, GO | ||||||||||||||||||||||||||||
Hinterlegt von: | Carter, Beatrice | ||||||||||||||||||||||||||||
Hinterlegt am: | 09 Sep 2020 22:54 | ||||||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:38 |
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