Flutter Analysis of an Aerofoil Using State-Space Unsteady Aerodynamic Modeling  

Oleh:

Kurniawan, Riccy

Jenis: Article from Books - E-Book
Dalam koleksi: Transactions on Engineering Technologies: Special Volume of the World Congress on Engineering 2013, page 141-148.
Topik: Aeroelasticity; Aerodynamics; Aerofoil; Dynamics; Flutter; Incompressible; Modeling; Stability; State-space; Unsteady
Fulltext: 11_978-94-017-8831-1_Kurniawan.pdf (537.29KB)

Isi artikel

This paper deals with the problem of the aeroelastic stability of a typical airfoil section with two-degree 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 ?ow conditions in an incompressible ?ow. 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 ?utter speed is computed through stability analysis of a linear state-space system.

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