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A Study on the Feasibility of Using Adaptive Structures in the Attenuation of Vibration Characteristics of Rotary Wings.

Nitzsche, F. (1) and Breitbach, E. (1992) A Study on the Feasibility of Using Adaptive Structures in the Attenuation of Vibration Characteristics of Rotary Wings. AIAA American Institute of Aeronautics and Astronautics, 370 L'Enfant Promenade, S.W., Washington, D.C. 20024.. 33rd AIAA/ASME/AHS/ASC Structures, Structural Dynamics and Materials Conference, April 13-15, 1992 / Dallas, TX..

Full text not available from this repository.

Abstract

This paper investigates the feasibility of employing adaptive material to build both sensors and actuators to attenuate the higher harmonic loads developed at the helicopter rotor blades using the elastic flatwise bending (second for hingeless rotors) and the first elastic torsion modes of a single blade deserve special attention in the vibration control. Theoretical investigations, supported by wind tunnel and flight tests, confirmed that these modes are responsible for the larger amplitude loads at 3/rev in four-blade hingeless rotors. This is a situation for which IBC, based on a collocated actuator-sensor arrangement along the blade, and tailored to act specifically on the bending and the torsion modes, is expected to bring further improvements to the reduction of the overall dynamic response of helicopters. The results indicate that there are already real situations for which the adaptive material has enough power to accomplish the task without saturation of the applied electrical field.

Item URL in elib:https://elib.dlr.de/39519/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1992,
Title:A Study on the Feasibility of Using Adaptive Structures in the Attenuation of Vibration Characteristics of Rotary Wings.
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Nitzsche, F. (1)UNSPECIFIEDUNSPECIFIED
Breitbach, E.UNSPECIFIEDUNSPECIFIED
Date:1992
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1391-1402
Publisher:AIAA American Institute of Aeronautics and Astronautics, 370 L'Enfant Promenade, S.W., Washington, D.C. 20024.
Series Name:AIAA-92-2452-CP
Status:Published
Keywords:Helicopter vibration, smart structures, optimal control, individual-blade-control.
Event Title:33rd AIAA/ASME/AHS/ASC Structures, Structural Dynamics and Materials Conference, April 13-15, 1992 / Dallas, TX.
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L ST - Starrflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity
Deposited By: DLR-Beauftragter, elib
Deposited On:02 Apr 2006
Last Modified:27 Apr 2009 10:46

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