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Proceedings Paper

Comparison of piezoelectric systems and aerodynamic systems for aircraft vibration alleviation
Author(s): Juergen Becker; Wolfgang G. Luber
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Paper Abstract

A comparison of active smart structure - piezoelectric control system and aerodynamic active systems for vibration alleviation and elastic mode damping of a military aircraft structure is presented. The vibration alleviation systems which are operative at flight in turbulence or during maneuvers at high incidence corresponding to severe buffeting conditions are under investigation by DASA as a part of research study on advanced aircraft structures. The active systems for elastic mode damping are designed as digital systems to provide vibration alleviation and have an interface to the flight control system (FCS) or are directly part of the FCS. The sensor concept of all different systems is the same as the sensor concept used for the FCS with the corresponding benefits of redundancy and safety. The design of systems and the comparisons of system properties are based on open and closed loop response calculations, performed with the dynamic model of the total aircraft including coupling of flight mechanics, structural dynamics, FCS dynamics and hydraulic actuator or piezo-actuator dynamics. Aerodynamic systems, like active foreplane and flap concepts, rudder and auxiliary rudder concepts, and piezoelectric systems, like piezo interface at the interconnection fin to rear fuselage and integrated piezo concepts are compared. Besides the essential effects on flexible aircraft mode stability and vibration alleviation factors system complexity and safety aspects are described.

Paper Details

Date Published: 16 June 1998
PDF: 14 pages
Proc. SPIE 3326, Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies, (16 June 1998); doi: 10.1117/12.310653
Show Author Affiliations
Juergen Becker, Daimler-Benz Aerospace AG (Germany)
Wolfgang G. Luber, Daimler-Benz Aerospace AG (Germany)

Published in SPIE Proceedings Vol. 3326:
Smart Structures and Materials 1998: Industrial and Commercial Applications of Smart Structures Technologies
Janet M. Sater, Editor(s)

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