DGLR-Publikationsdatenbank - Detailansicht

Titel:

Industrial Validation of Numerical Aerodynamics about Rotor Heads: Towards a Design Optimisation at Eurocopter

Autor(en):
F. le Chuiton, T. Kneisch, S. Schneider, P. Krämer
Zusammenfassung:
In view of reducing the overall drag of the helicopter, activities at Eurocopter Deutschland have been started in order to be able to investigate and minimise the rotor head contribution. Besides traditional wind tunnel and flight tests, two approaches have been newly applied to the aerodynamics of the rotor head: CAD surface based Computational Fluid Dynamics computations (FLOWer and TAU flow solvers of DLR) and an analytical geometric modelling. The CFD computations provide an in-depth insight in surface pressure distribution, surface flow features and unsteady three-dimensional vortex structures of the wake behind the rotor head. Moreover, global loads as well as a detailed loads breakdown over components are of value for design activities. The analytical geometric modelling makes use of a subdivision of the rotor head into elemental shapes, for which loads are separately computed and then integrated over the whole geometry. The model is then substantiated with CFD results and also with data from wind tunnel and flight tests.
Veranstaltung:
35th European Rotorcraft Forum 2009,
Medientyp:
Conference Paper
Sprache:
englisch
Format:
21,0 x 29,7 cm, 11 Seiten
Veröffentlicht:
DGLR-Bericht, 2009, 2009-03, 35th European Rotorcraft Forum 2009 - Conference Proceedings; S.1-11; 2009; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn
Preis:
NA
ISBN:
ISSN:
Kommentar:
in getr. Zählung;
Klassifikation:
Stichworte zum Inhalt:
computational fluid dynamics, drag reduction, helicopters, rotors
Verfügbarkeit:
Bestellbar
Veröffentlicht:
2009


Dieses Dokument ist Teil einer übergeordneten Publikation009:
35th European Rotorcraft Forum 2009 - Conference Proceedings