Beaumier, P. and Chelli, E. and Pahlke, K. (2000) Navier-Stokes Prediction of Helicopter Rotor Performance Including Aero-Elastic Effects. 56th AHS Forum, Virginia Beach (usa), 02.-04.05.2000.
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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/13357/ | ||||||||||||||||
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Document Type: | Conference or Workshop Item (Paper) | ||||||||||||||||
Additional Information: | LIDO-Berichtsjahr=2001, | ||||||||||||||||
Title: | Navier-Stokes Prediction of Helicopter Rotor Performance Including Aero-Elastic Effects | ||||||||||||||||
Authors: |
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Date: | 2000 | ||||||||||||||||
Open Access: | No | ||||||||||||||||
Gold Open Access: | No | ||||||||||||||||
In SCOPUS: | No | ||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||
Status: | Published | ||||||||||||||||
Keywords: | CFD, N-S equations, rotor flows, rotary flows, hover, aero-elasticity | ||||||||||||||||
Event Title: | 56th AHS Forum, Virginia Beach (usa), 02.-04.05.2000 | ||||||||||||||||
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: | Köln-Porz , Braunschweig , Göttingen | ||||||||||||||||
Institutes and Institutions: | Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik | ||||||||||||||||
Deposited By: | Grant, Claudia | ||||||||||||||||
Deposited On: | 16 Sep 2005 | ||||||||||||||||
Last Modified: | 14 Jan 2010 20:20 |
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