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2020 | OriginalPaper | Buchkapitel

High-Fidelity Static Aeroelastic Simulations of the Common Research Model

verfasst von : Jan Navrátil

Erschienen in: Flexible Engineering Toward Green Aircraft

Verlag: Springer International Publishing

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Abstract

Current aircraft design leads to increased flexibility of the airframe as a result of modern materials application or aerodynamically efficient slender wings. The airframe flexibility influences the aerodynamic performance and it might significantly impact the aeroelastic effects, which can be more easily excited by rigid body motions than in case of stiffer structures. The potential aeroelastic phenomena can occur in large range of speeds involving transonic regime, where the non-linear flow effects significantly influence the flutter speed. Common aeroelastic analysis tools are mostly based on the linear theories for aerodynamic predictions, thus they fail to predict mentioned non-linear effect. This paper presents the first step in the design of high-fidelity aeroelastic simulation tool. Currently, it allows to perform static aeroelastic simulations by coupling Computational Fluid Dynamics solver with Matlab based Finite Element solver. The structural solver is a linear elasticity solver which is able to solve either models consisting of beam elements or arbitrary models using stiffness and mass matrices exported from Nastran solver. The aeroelastic interface is based on the Radial Basic Functions. The test case studied in this work is a static aeroelastic simulation of the Common Research Model in the transonic conditions. The structural models tested are a wing-box finite element model and a beam stick model which is statically equivalent to the wing-box model. The comparison of results using respective structural models shows good agreement in aerodynamic properties of the model wing at static equilibrium state.

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Vorheriges Kapitel Validation of High Fidelity Computational Methods for Aeronautical FSI Analyses

Nächstes Kapitel Aero-elastic Simulations Using the NSMB CFD Solver Including results for a Strut Braced Wing Aircraft

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Titel: High-Fidelity Static Aeroelastic Simulations of the Common Research Model
verfasst von: Jan Navrátil
Verlag: Springer International Publishing
Buch: Flexible Engineering Toward Green Aircraft
Print ISBN: 978-3-030-36513-4

Electronic ISBN: 978-3-030-36514-1

Copyright-Jahr: 2020
DOI: https://doi.org/10.1007/978-3-030-36514-1_4

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