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Whirl Tower Demonstrations of the SHARCS Hybrid Control Concept

Feszty, D. and Nitzsche, F. and Mander, A. and Coppotelli, G. and Vetrano , F.. and Riemenschneider, Johannes and Wierach, Peter (2009) Whirl Tower Demonstrations of the SHARCS Hybrid Control Concept. AHS 65th Annual Forum, 27. - 29. Mai 2009, Grapevien, Texas, USA.

Full text not available from this repository.

Abstract

Elements of the SHARCS (Smart Hybrid Active Rotor Control System) Hybrid Control concept are demonstrated via two sets of whirl tower tests. Hybrid Control stands for combining a flow control (such as an Actively Controlled Flap or Active Twist Rotor) and of a structural (or stiffness) control device on a helicopter blade. A Hybrid Control system promises to reduce vibration and noise on helicopters simultaneously as well as to improve the efficiency of the flow control device. For the structural control system, a unique and entirely original Active Pitch Link has been developed at Carleton University, which is capable of dynamically controlling the torsional stiffness of a blade. Design, prototyping, static and whirl tower testing of this device is presented in the paper. A second set of whirl tower tests of an Active Twist Rotor equipped with a range of springs instead of the conventional pitch link, demonstrates that the Active Pitch Link shall indeed be capable of lowering the torsional stiffness of the blade. For these tests, the modal parameters of the blade were evalu-ated via a novel “Output-Only” method, which represents the first application of such methodology for rotary-wing applications.

Item URL in elib:https://elib.dlr.de/59939/
Document Type:Conference or Workshop Item (Speech)
Title:Whirl Tower Demonstrations of the SHARCS Hybrid Control Concept
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Feszty, D.Department of Mechanical and Aerospace Engineering Carleton University, Ottawa, Ontario, CanadaUNSPECIFIED
Nitzsche, F.Department of Mechanical and Aerospace Engineering Carleton University, Ottawa, Ontario, CanadaUNSPECIFIED
Mander, A.Department of Mechanical and Aerospace Engineering Carleton University, Ottawa, Ontario, CanadaUNSPECIFIED
Coppotelli, G.Department of Aerospace Engineering and Astronautics, Universit`a di Roma “La Sapienza”, Rome, Italy)UNSPECIFIED
Vetrano , F..Department of Aerospace Engineering and Astronautics, Universit`a di Roma “La Sapienza”, Rome, Italy)UNSPECIFIED
Riemenschneider, JohannesUNSPECIFIEDUNSPECIFIED
Wierach, PeterUNSPECIFIEDUNSPECIFIED
Date:May 2009
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Keywords:Active Twist Rotor, Rotorblatt, Modalanalyse, variable Steuerstangensteifigkeit
Event Title:AHS 65th Annual Forum
Event Location:Grapevien, Texas, USA
Event Type:Conference
Event Dates:27. - 29. Mai 2009
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 Active Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Deposited By: Ries, Doris
Deposited On:16 Sep 2009 10:56
Last Modified:03 Mar 2010 09:50

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