Effect of leading-edge parameters of multi-element airfoil on aerodynamic characteristic

Abstract Studying the effect of leading-edge parameters 30P30N on aerodynamic characteristic was carried out. Effect changing gap and overlap slat airfoil were mainly investigated. Numerical simulation applied to obtain characteristics, results show that: lift coefficient in linear segment basically does not change with gap, drag decreases gap. The have obvious lift-to-drag ratio. smaller between fixed wing, greater ratio is achieved. With increase increases.