Hoeveler, Bastian und Bauknecht, Andre und Wolf, Christian und Janser, Frank (2020) Wind-Tunnel Study of a Wing-Embedded Lifting Fan Remaining Open in Cruise Flight. Journal of Aircraft, 57 (4), Seiten 558-568. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.C035422. ISSN 0021-8669.
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Offizielle URL: https://doi.org/10.2514/1.C035422
Kurzfassung
It is investigated whether a nonrotating lifting fan remaining uncovered during cruise flight, as opposed to being covered by a shutter system, can be realized with limited additional drag and loss of lift during cruise flight. A wind tunnel study of a wing-embedded lifting fan has been conducted at the Side Wind Test Facility Göttingen of DLR, German Aerospace Center in Göttingen using force, pressure, and stereoscopic particle image velocimetry techniques. The study showed that a step on the lower side of the wing in front of the lifting fan duct increases the lift to-drag ratio of the whole model byup to 25%for allpositive angles of attack. Different sizes and inclinations ofthe step had limited influence on the surface pressure distribution. The data indicate that these parameters can be optimized to maximize the lift-to-drag ratio. A doubling of the curvature radius of the lifting fan duct inlet lip on the upper side of the wing affected the lift-to-drag ratio by less than 1%. The lifting fan duct inlet curvature can therefore be optimized to maximize the vertical fan thrust of the rotating lifting fan during hovering without affecting the cruise flight performance with a nonrotating fan.
elib-URL des Eintrags: | https://elib.dlr.de/135949/ | ||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||
Zusätzliche Informationen: | Print: 0021-8669 Electronic: 1533-3868 | ||||||||||||||||||||
Titel: | Wind-Tunnel Study of a Wing-Embedded Lifting Fan Remaining Open in Cruise Flight | ||||||||||||||||||||
Autoren: |
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Datum: | Juli 2020 | ||||||||||||||||||||
Erschienen in: | Journal of Aircraft | ||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||
Band: | 57 | ||||||||||||||||||||
DOI: | 10.2514/1.C035422 | ||||||||||||||||||||
Seitenbereich: | Seiten 558-568 | ||||||||||||||||||||
Herausgeber: |
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Verlag: | American Institute of Aeronautics and Astronautics (AIAA) | ||||||||||||||||||||
ISSN: | 0021-8669 | ||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||
Stichwörter: | helicopter, lifting fan duct, wind tunnel measurements, PIV | ||||||||||||||||||||
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: | Carter, Beatrice | ||||||||||||||||||||
Hinterlegt am: | 09 Sep 2020 22:28 | ||||||||||||||||||||
Letzte Änderung: | 09 Sep 2020 22:28 |
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