ON THE FRONT VIEW SHAPE OF REAL WING

Abstract

The front view ideal wing (for model aeroplane, airplane) has a parabola shape. Its practical realisation is made using straight lines, resulting V, U, Uoptimum, W, and Woptimum wings. The Uoptimum wing is close to the parabola shape. Its deviation from the parabola is of maximum 0.08h (h – height increasing between tip and root wing) at 0.5t (2t - wingspan, 0 height is at the root wing), and to V wing (the most resistant to the lateral shocks) of only 0.25h, in the same point. The U wing, having the extremities starting from the half of the wings, presents a 0.25h deviation from parabola ideal wing and to V wing of 0.5h in the same point (0.5t), being less resistant to lateral shocks. The W wing presents less deviation to the parabola, but against straight line is of 0.33h at 0.66t. The Woptimum wing presents the smallest deviation to the parabola of 0.06h  and to the straight line d1 of 0.25h at 0.5t, being most close to the parabola and straight line d1 (equivalent wing).

Key words: ideal wing, V wing, U wing, Uoptimum wing, W wing, Woptimum wing.