Numerical Study of Flutter of a Two-Dimensional Aeroelastic System. (8th December 2013)

• Record Type: Journal Article
• Authors: Kurniawan, Riccy
• Other Names: Lin Y.-H. Academic Editor.; Park Y. H. Academic Editor.; Yang X. Academic Editor.
• Is Part Of: ISRN mechanical engineering. Volume 2013(2013)
• Publication Date: 2013-12-08
• Subjects: Mechanical engineering -- Periodicals; Mechanical engineering; Periodicals; Electronic journals; 621
• DOI: 10.1155/2013/127123
• Languages: English
• ISSNs: 2090-5122

Abstract

Abstract : This paper deals with the problem of the aeroelastic stability of a typical aerofoil section with two degrees of freedom induced by the unsteady aerodynamic loads. A method is presented to model the unsteady lift and pitching moment acting on a two-dimensional typical aerofoil section, operating under attached flow conditions in an incompressible flow. Starting from suitable generalisations and approximations to aerodynamic indicial functions, the unsteady loads due to an arbitrary forcing are represented in a state-space form. From the resulting equations of motion, the flutter speed is computed through stability analysis of a linear state-space system.