Static Aeroelastic Predictions for a Transonic Transport Model Using an Unstructured-Grid Flow Solver Coupled with a Structural Plate Technique
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An equivalent-plate structural deformation technique was coupled with a steady-state unstructured-grid three-dimensional Euler flow solver and a two-dimensional strip interactive boundary-layer technique. The objective of the research was to assess the extent to which a simple accounting for static model deformations could improve correlations with measured wing pressure distributions and lift coe
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An equivalent-plate structural deformation technique was coupled with a steady-state unstructured-grid three-dimensional Euler flow solver and a two-dimensional strip interactive boundary-layer technique. The objective of the research was to assess the extent to which a simple accounting for static model deformations could improve correlations with measured wing pressure distributions and lift coefficients at transonic speeds. Results were computed and compared to test data for a wing-fuselage model of a generic low-wing transonic transport at a transonic cruise condition over a range of Reynolds numbers and dynamic pressures. The deformations significantly improved correlations with measured wing pressure distributions and lift coefficients. This method provided a means of quantifying the role of dynamic pressure in wind-tunnel studies of Reynolds number effects for transonic transport models.Allison, Dennis O. and Cavallo, Peter A.Langley Research CenterAEROELASTICITY; UNSTRUCTURED GRIDS (MATHEMATICS); THREE DIMENSIONAL FLOW; AERODYNAMIC COEFFICIENTS; DYNAMIC PRESSURE; PRESSURE DISTRIBUTION; WIND TUNNELS; TRANSONIC SPEED; STATIC MODELS; STEADY STATE...
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