A. Nikkhoo - Mechanical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Iran
A. Esmaeili - Mechanical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Iran

In order to upsurge the maneuverability of micro aerial vehicles, a tubercle leading edge inspired by the whale flipper was applied as a passive stall control method. Although this method could be useful to control stall phenomena, the effect of geometrical properties on the flow physic should be investigated to reach the root of them. According to preceding research, the effect of some parameters on the tubercle leading edge wing is a hot topic among researchers. The aim of this research is to explore the effects of sectional wing geometries like amplitude, wavelength, thickness, maximum thickness location, and camber on the aerodynamic feature of full-span tubercle leading edge wing, particularly at ۲۲ degree in post-stall circumstances. The results present that by reducing the amplitude about ۲.۵%c, the lift coefficient upsurges by about ۳.۵%; instead, the drag coefficient reduces about ۶%. On the other hand, by decreasing the wavelength from ۴۶.۲%c to ۱۱.۷%c, the drag coefficient and the lift coefficient decrease by about ۱۵% and ۱۹%, respectively. Furthermore, as the thickness rises from ۱۰.۵۵%c to ۱۸.۱۴%c, the lift and drag coefficient goes down about ۹.۴% and ۲.۹%, respectively. Furthermore, by increasing the camber from ۲.۵۶%c to ۳.۳۴%c, the lift to drag ratio goes down by about ۱.۰۶%. Finally, by raising the last design variable (maximum thickness location) from ۰.۲۶c to ۰.۵۱c, the lift to drag ratio increases about ۱۳.۷%.

Full-span tubercle leading edge wing geometrical parameters, Flow Separation Area (FSA), Air dry zone aerodynamic forces, Power Spectral Density (PSD), Fast Fourier Transform (FFT)