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Aeroelasticity of two-dimensional lifting surfaces via indicial function approach

Published online by Cambridge University Press:  04 July 2016

P. Marzocca ,
L. Librescu  and
G. Chiocchia
P. Marzocca
Affiliation:
Engineering Science and Mechanics Department, Virginia Polytechnic Institute and State University, Blacksburg, USA
L. Librescu
Affiliation:
Engineering Science and Mechanics Department, Virginia Polytechnic Institute and State University, Blacksburg, USA
G. Chiocchia
Affiliation:
Dipartimento di Ingegneria, Aeronauticae SpazialePolitecnico di Torino, Italy
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Extract

An aeroelastic formulation of 2D lifting surfaces in an incompressible flow field via the use of aerodynamic indicial functions is presented. The approach carried out in time and frequency domains yields the proper aerodynamic loads necessary to the study of the subcritical aeroelastic response and flutter of lifting surfaces, respectively. The expressions of the unsteady lift and aerodynamic twist moment in the frequency domain are given in terms of the Theodorsen’s function, while in the time domain, these are obtained directly with the help of the Wagner’s function. Closed form expressions of unsteady aerodynamic derivatives, helpful in an unified approach of response and flutter analyses, and results related to aeroelastic response to gust and blast loads are supplied. In this context, a novel representation of the aeroelastic response in the phase - space was supplied and pertinent conclusions on the implications of some basic parameters have been outlined.

Type
Research Article
Information
The Aeronautical Journal , Volume 106 , Issue 1057 , March 2002 , pp. 147 - 153
Copyright
Copyright © Royal Aeronautical Society 2002 

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