Experimental investigation of three-dimensional dynamic stall model oscillating in pitch

This is the authors' abstract. We don't add key points for this paper.

The ONERA semiempirical theoretical model for unsteady aerodynamics in the stall regime has been extended to three-dimensi onal flow. Parameter identification for the model is obtained from experimental dynamic stall data for a low AR rectangular wing with a NACA 0012 airfoil profile oscillating in pitch. Excellent correlations were obtained with the measured data for a three-dimensional linear aerodynamic model and reasonable agreement between theory and test data were obtained for a nonlinear (stalled) aerodynamic model. Qualitatively, the results obtained for this simple three-dimensional wing are similar to the corresponding data for the twodimensional airfoil.