Investigation on Aerodynamic Interactive Effects of Wing and Horizontal Tail in WIG

In this article, aerodynamic interactive effects of horizontal tail and wing with arbitrary airfoil crosssections of a typical flying boat are studied numerically. Also, influence of wing installation angle in two states is investigated. The numerical simulation is performed with Computational Fluid Dynamic (CFD) methods and turbulence flow simulation is carried out by the SST k-ω model. In order to validate the present CFD simulation,experimental lift and drag coefficients of wing only with the airfoil cross-section NACA 6409 are compared with the same numerical results, in two ground clearances (h/c = 0.15, 0.25) with various angle of attacks (α = 00, 20, 40, 60 and 80). However, main results indicate that using horizontal tail will improve CL and longitudinal static stability, of course, in a proper initial wing incidence angle which acts the important task in aerodynamic performance of a WIG craft. Also in present work, adding horizontal tail to wing results in increasing CD and reducing aerodynamic quality. Although, decrease in L/D can be minimized with a optimum selection for wing installation angle

Keywords:

Wing , Tail , Lift , Drag , NACA6409