Analysis of reattachment during ramp down tests

The paper considers the reattachment of the flow over the upper surface of an aerofoil, while undergoing a constant negative pitch rate motion, from an incidence well above the static stall value. Experimental data from a variety of aerofoils tested using the University of Glasgow facilities, have been recorded. All data were collected at an effective Mach and Reynolds numbers of 0.11 & 1.5×10⁶ respectively. Various improvements for future work are noted, and the predominant features of the reattachment process are discussed. Finally, a preliminary attempt at predicting the collected reattachment data was made utilising a version of the Beddoes model as coded at the University of Glasgow from the relevant equations cited in the available literature.