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Navier-Stokes Prediction of Helicopter Rotor Performance Including Aero-Elastic Effects

Beaumier, Philippe and Chelli, Enrico and Pahlke, Klausdieter (2001) Navier-Stokes Prediction of Helicopter Rotor Performance Including Aero-Elastic Effects. Journal of the American Helicopter Society, 46 (4). AMERICAN HELICOPTER SOCIETY INCORPORATION. ISSN 0002-8711

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Abstract

Two numerical methods (the DLR code FLOWer and the ONERA code CANARI), based on the resolution of the Reynolds Averaged Navier-Stokes equations, are applied in this paper in order to compute the performance of helicopter rotors in hover. The comparison of computed performance with experimental results of the scale-1 BO-105 rotor and the model 7A rotor assuming rigid blades show a significant overestimation of rotor thrust and power. An easy and efficient way to account for the blades elasticity in torsion is then described. The new aero-elastic computations show much better agreement with experiment, especially for the hingeless BO-105 rotor, even if the rotors figures of merit are underestimated for a given thrust coefficient. It is finally shown that accounting for a laminar-turbulent boundary layer (instead of a fully turbulent boundary layer) in the Navier-Stokes code significantly increases the estimated figure of merit, thus improving the correlation between computations and experiment.

Item URL in elib:https://elib.dlr.de/19724/
Document Type:Article
Title:Navier-Stokes Prediction of Helicopter Rotor Performance Including Aero-Elastic Effects
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Beaumier, PhilippeONERAUNSPECIFIED
Chelli, EnricoUNSPECIFIEDUNSPECIFIED
Pahlke, KlausdieterUNSPECIFIEDUNSPECIFIED
Date:2001
Journal or Publication Title:Journal of the American Helicopter Society
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:46
Publisher:AMERICAN HELICOPTER SOCIETY INCORPORATION
ISSN:0002-8711
Status:Published
Keywords:CFD, N-S equations, rotor flows, rotary flows, hover, aero-elasticity
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft (old)
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Pahlke, Dr.-Ing. Klausdieter
Deposited On:23 Nov 2005
Last Modified:27 Apr 2009 04:43

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