Gardner, Anthony D. und Wolf, C. Christian und Heineck, James T. und Barnett, Miles und Raffel, Markus (2020) Helicopter Rotor Boundary Layer Transition Measurement in Forward Flight Using an Infrared Camera. Journal of the American Helicopter Society, 65 (1), Seiten 2-14. American Helicopter Society. doi: 10.4050/JAHS.65.012002. ISSN 0002-8711.
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Offizielle URL: https://doi.org/10.4050/JAHS.65.012002
Kurzfassung
Boundary layer transition measurement was demonstrated using differential infrared thermography (DIT) on the top side of a helicopter rotor in forward flight, which detects the difference in the convective heat transfer at the boundary layer transition position. The tests used a FLIR X8500xc SLS long wave infrared camera to observe the DLR EC135 test helicopter rotor. The boundary layer transition was detected for hover out of ground effect (150 ft) and for forward flight at 80 kt (1700 ft). The measured boundary layer transition positions are consistent with previous measurements of the EC135 hovering in ground effect, and with predicted boundary layer transition positions. A method for the analysis of DIT images for a rotor in forward flight is shown, based on computational analysis of a pitching airfoil with varying inflow.
elib-URL des Eintrags: | https://elib.dlr.de/132342/ | ||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||
Titel: | Helicopter Rotor Boundary Layer Transition Measurement in Forward Flight Using an Infrared Camera | ||||||||||||||||||||||||
Autoren: |
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Datum: | 1 Januar 2020 | ||||||||||||||||||||||||
Erschienen in: | Journal of the American Helicopter Society | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||
Band: | 65 | ||||||||||||||||||||||||
DOI: | 10.4050/JAHS.65.012002 | ||||||||||||||||||||||||
Seitenbereich: | Seiten 2-14 | ||||||||||||||||||||||||
Herausgeber: |
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Verlag: | American Helicopter Society | ||||||||||||||||||||||||
ISSN: | 0002-8711 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | boundary layer transition, helicopter, infrared thermography, DIT, flight test | ||||||||||||||||||||||||
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 | ||||||||||||||||||||||||
Hinterlegt von: | Winkels, Elisabeth | ||||||||||||||||||||||||
Hinterlegt am: | 18 Mär 2020 13:47 | ||||||||||||||||||||||||
Letzte Änderung: | 27 Okt 2023 14:50 |
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