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Using Multibody Dynamics for the Flutter Assessment of an Isolated Rotor with Innovative Blade Layout

Arnold, Jürgen (2016) Using Multibody Dynamics for the Flutter Assessment of an Isolated Rotor with Innovative Blade Layout. AHS Specialists’ Conference on Aeromechanics Design for Vertical Lift, 20.-22. Jan. 2016, San Francisco, California, USA.

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Abstract

The double-swept ERATO blade layout is assessed for flutter stability in hover flight. Used numerical methods comprise multibody dynamics together with an unsteady aerodynamic model based on Wagner’s function and related enhancements for the general motion of an airfoil section considering heave and pitch motion. The numerical solutions for flutter onset are gained from simulations in both, frequency and time domain. According flutter results are compared and observed aeroelastic couplings of the rotor blade are discussed. A dominant flutter mode develops with rotor harmonics of 3/rev for increasing rotor speed. The observed mechanism is composed of two flap bending modes that carry shares in blade twist as a result of the double-swept rotor blade shape.

Item URL in elib:https://elib.dlr.de/107579/
Document Type:Conference or Workshop Item (Speech)
Title:Using Multibody Dynamics for the Flutter Assessment of an Isolated Rotor with Innovative Blade Layout
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Arnold, JürgenJuergen.Arnold (at) dlr.deUNSPECIFIED
Date:January 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Rotorblatt, Aeroelastik, Flatterstabilität
Event Title:AHS Specialists’ Conference on Aeromechanics Design for Vertical Lift
Event Location:San Francisco, California, USA
Event Type:international Conference
Event Dates:20.-22. Jan. 2016
Organizer:American Helicopter Society International
HGF - Research field:Aeronautics, Space and Transport
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: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Aeroelastic Simulations
Deposited By: Arnold, Dipl.-Ing. Jürgen
Deposited On:09 Dec 2016 09:03
Last Modified:09 Dec 2016 09:03

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