Patent ID: 7914406

Claim:
A vane for mounting to a projectile, the vane comprising: a base for mounting on the surface of the projectile; a vane fin including a contour defined by a bottom-edge, a rear-edge and a front-edge, and having a height H and a length L with a ratio of L to H being approximately 4 to 1, wherein: the bottom-edge has a front point and a back point and is substantially linear between these points and is adjoined to the base; the rear-edge has an upper point and a lower point and arcs from the lower point that corresponds to the back point of the bottom-edge, concave to the bottom edge, in an upward direction to the upper point of the back-edge; and the front-edge has an upper point and a lower point, the upper point of the front-edge corresponding with the upper point of the back-edge, and degrades from the upper point of the front-edge toward the lower point of the front edge which corresponds with the front point of the bottom-edge; wherein the front-edge degrades towards the front point of the bottom-edge in a linear fashion at an angle Ø 1 of approximately 20°±1° to a point P 1 and then arcs concave to the bottom-edge downwardly from point P 1 to the front point of the bottom-edge.