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Calculation of Multibladed Rotors in High-Speed Forward Flight Accounting for Elastic Blade Deformations

Pahlke, K. and van der Wall, Berend G. (2001) Calculation of Multibladed Rotors in High-Speed Forward Flight Accounting for Elastic Blade Deformations. In: Proceedings of the CEAS Conference on Multidisciplinary Aircraft Design and Optimization, pp. 259-270. DGLR-Deutsche Gesellschaft für Luft- und Raumfahrt, Lilienthal-Oberth e.V., Godesberger Allee 70, 53175 Bonn. CEAS Conference on Multidisciplinary Aircraft Design and Optimization, Cologne (de), 25.-26.06.2001. ISBN 3-932182-21-9.

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Abstract

A weak coupling procedure for coupling the rotor simulation code S4 and the Euler/Navier-Stokes solver FLOWer is presented. The method allows the produce trimmed CFD solutions for rotors in high speed forward flight accounting for elastic blade deformations and viscous effects. The weak coupling procedure is applied to a high-speed forward flight test case of the 7A rotor. Only isolated blade computations are carried out. The predicted pitching moment computed with the assumption of inviscid flow shows large differences compared to the experimental data while the Navier-Stokes computation agrees much better with the measured data. The weak coupling considerably improved the solution.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2002,
Title:Calculation of Multibladed Rotors in High-Speed Forward Flight Accounting for Elastic Blade Deformations
Authors:
AuthorsInstitution or Email of Authors
Pahlke, K.UNSPECIFIED
van der Wall, Berend G.Institut für Flugsystemtechnik
Date:2001
Journal or Publication Title:Proceedings of the CEAS Conference on Multidisciplinary Aircraft Design and Optimization
Page Range:pp. 259-270
Publisher:DGLR-Deutsche Gesellschaft für Luft- und Raumfahrt, Lilienthal-Oberth e.V., Godesberger Allee 70, 53175 Bonn
Series Name:DGLR Bericht 2001-05
ISBN:3-932182-21-9
Status:Published
Keywords:Isolated rotor, forward flight, elastic blades, fluid-structure coupling, viscous flows, Navier-Stokes equations
Event Title:CEAS Conference on Multidisciplinary Aircraft Design and Optimization, Cologne (de), 25.-26.06.2001
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
Institute of Flight Systems
Deposited By: elib DLR-Beauftragter
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 18:52

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