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Industrial measurement campaign on fully equipped helicopter model

De Gregorio, Fabrizio and Kindler, Kolja and 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.

Full text not available from this repository.

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

Abstract

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.

Item URL in elib:https://elib.dlr.de/64038/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Industrial measurement campaign on fully equipped helicopter model
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
De Gregorio, FabrizioCIRA, ItalyUNSPECIFIED
Kindler, KoljaUNSPECIFIEDUNSPECIFIED
Pengel, KurtDNW, NLUNSPECIFIED
Date:2010
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-12
Series Name:Conference Proceedings on USB-Stick
Status:Published
Keywords:helicopter, CFD, PIV
Event Title:15th Symposium on the Applications of Laser Techniques t Fluid Mechanics
Event Location:Lisbon, Portugal
Event Type:international Conference
Event Dates:05.-08. July 2010
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Deposited By: Micknaus, Ilka
Deposited On:21 Jul 2010 14:19
Last Modified:26 Sep 2011 14:00

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