22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-4.6.3

STATIC AEROELASTICITY ANALYSIS IN TRANSONIC FLOW

F. Z. Ishmuratov, S. I. Kuzmina, V. A. Mosunov
Central Aerohydrodynamic Institute (TsAGI), Zhukovsky, Moscow Reg., Russia

Keywords: static aeroelasticity, transonic flow, ritz method, software

In this paper the method is suggested for taking account of transonic phenomena for calculations of static aeroelasticity characteristics. This work is implemented as further development of the methods and software of the multidisciplinary computer code KC-2 which is used for the analysis of the problems of static and dynamic aeroelasticity in Russian aviation design bureaus. Elastic characteristics of the structure are computed on the base of polynomial Ritz method. Iteration technique is used to analyze static aeroelasticity characteristics in the transonic regime. Pressure distribution is computed by solving Euler equations by using Godunov’s method. Then a numerical linearization is performed for transonic pressure distribution and a linear analysis of static aeroelasticity characteristics is made. The procedure is repeated up to convergence on trim angles and displacements of a structure. The results of the analysis of static aeroelasticity characteristics in transonic flow for supersonic transport are presented. The comparison with the results of linear analysis is shown.

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