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BENEFIT STUDIES FOR ROTOR WITH ACTIVE TWIST CONTROL USING WEAK FLUID-STRUCTURE COUPLING

Zhang, Qinyin and Hoffmann, Frauke and van der Wall, Berend G. (2009) BENEFIT STUDIES FOR ROTOR WITH ACTIVE TWIST CONTROL USING WEAK FLUID-STRUCTURE COUPLING. 35th European Rotorcraft Forum, 22. Sep. - 25. Sep. 2009, Hamburg, Germany.

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Abstract

This paper presents the results of the numerical benefit studies concerning a rotor with implemented active twist control technology which was defined in the framework of the European FRIENDCOPTER project. The objective is to demonstrate the potential improvement of the active twist rotor with respect to rotor aerodynamic performance, noise and vibration reduction. The numerical method applied for the benefit studies is based on a weak coupling procedure between the DLR rotor simulation code S4 and the DLR Navier-Stokes flow solver FLOWer. In this study, the weak coupling approach was applied to two steady forward flight cases at advance ratios of 0.318 and 0.378. The numerical results showed that applying optimized active twist control laws, the vibration and power consumption level of the active twist rotor can be reduced substantially in both cases.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:BENEFIT STUDIES FOR ROTOR WITH ACTIVE TWIST CONTROL USING WEAK FLUID-STRUCTURE COUPLING
Authors:
AuthorsInstitution or Email of Authors
Zhang, Qinyinqinyin.zhang@dlr.de
Hoffmann, Fraukefrauke.hoffmann@dlr.de
van der Wall, Berend G.Berend.vanderWall@dlr.de
Date:2009
Status:Published
Keywords:helicopter rotor, active twist control, smart material, weak coupling
Event Title:35th European Rotorcraft Forum
Event Location:Hamburg, Germany
Event Type:international Conference
Event Dates:22. Sep. - 25. Sep. 2009
Organizer:German Society for Aeronautics and Astronautics (DGLR)
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 Smart Rotorcraft
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Institute of Aerodynamics and Flow Technology > Configuration Design
Deposited By: Qinyin Zhang
Deposited On:06 Nov 2009 08:44
Last Modified:17 Nov 2009 16:16

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