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

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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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/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2001,
Title:Navier-Stokes Prediction of Helicopter Rotor Performance Including Aero-Elastic Effects
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
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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