elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

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.

Full text not available from this repository.

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.

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:
AuthorsInstitution or Email of Authors
Beaumier, P.ONERA
Chelli, E.UNSPECIFIED
Pahlke, K.UNSPECIFIED
Date:2000
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
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik
Deposited By: Claudia Grant
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 20:20

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.