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Industrial measurement campaign on fully equipped helicopter model

De Gregorio, Fabrizio und Kindler, Kolja und Pengel, Kurt (2010) Industrial measurement campaign on fully equipped helicopter model. 15th Symposium on the Applications of Laser Techniques t Fluid Mechanics, 05.-08. July 2010, Lisbon, Portugal.

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Offizielle URL: http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2010/

Kurzfassung

The flow field around a helicopter is characterised by its inherent complexity including effects of fluid-structure interference, shock-boundary layer interaction, and dynamic stall. Since the advancement of computational fluid dynamics and computing capabilities has led to an increasing demand for experimental validation data, a comprehensive wind tunnel test of a fully equipped and motorized generic medium transport helicopter was conducted in the framework of the GOAHEAD project. In this paper the results of the three-component velocity field measurements are summarized. The effect of the interaction between the main rotor wake and the fuselage for cruise/tail shake conditions was investigated, detecting and analysing the flow characteristics downstream the rotor hub and the rear hatch. The results indicated a sensible increment of the intensity of the vortices shedding form the lower part of the fuselage and a strong influence of the main rotor in the upper region. Furthermore, the pitch up phenomenon was considered, detecting the blade tip vortices impacting on the horizontal tail plane. For high speed forward flight the shock wave forming on the advancing blade was investigated, measuring the location on the blade chord and the intensity. Furthermore, dynamic stall on the retreating main rotor blade in hight-speed forward flight was observed at 40% and 50% blade radius. The analysis of the substructures forming the dynamic stall vortex revealed an unexpected spatial concentration suggesting a rotational stabilization of large scale structures on the blade.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Industrial measurement campaign on fully equipped helicopter model
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
De Gregorio, FabrizioCIRA, Italy
Kindler, KoljaNICHT SPEZIFIZIERT
Pengel, KurtDNW, NL
Datum:2010
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Seitenbereich:Seiten 1-12
Name der Reihe:Conference Proceedings on USB-Stick
Status:veröffentlicht
Stichwörter:helicopter, CFD, PIV
Veranstaltungstitel:15th Symposium on the Applications of Laser Techniques t Fluid Mechanics
Veranstaltungsort:Lisbon, Portugal
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:05.-08. July 2010
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Flugphysik
Standort: Göttingen
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Hubschrauber
Hinterlegt von: Ilka Micknaus
Hinterlegt am:21 Jul 2010 14:19
Letzte Änderung:26 Sep 2011 14:00

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