Title: Unsteady aerodynamics in various flight speed regimes for flutter/dynamic response analyses, 18th
Abstract: This paper deals with the generation and the use of new aerodynamic indicia! functions towards the aeroelastic formulation of two-dimension al lifting surfaces, in the subsonic compressible and supersonic flight speed regimes. The indicia! function approach enables one to treat in an unified way, i.e. in the time and frequency domains the various problems of the aeroelasticity of lifting surfaces. Such an approach yields the proper aerodynamic loads necessary to the study of the subcritical response of the open/closed loop aeroelastic systems, and of flutter of lifting surfaces. Counterparts of Theodorsen's and Wagner's functions extended to the subsonic compressible and supersonic flight speed regimes, enabling one to express the aerodynamic lift and moment in the frequency and time domains, respectively, are obtained. Validation of the model, closed form solutions and aerodynamic derivatives for different flight speed regimes are obtained, graphical representations and results displaying the aeroelastic response to blast loads are presented, and pertinent conclusions are outlined. NOMENCLATURE
Publication Year: 2000
Publication Date: 2000-01-01
Language: en
Type: article
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