<p>The airfoil (100) has five projection bodies (30) that are designed as plate-like ribs and provided at an end strip (20). Each projection body extends 75 percentage over the entire length of the end strip parallel to a center line of the airfoil or along the center line in a cross-section of the airfoil. The projection body orthogonally protrudes from a surface of the end strip. The breadth of the projection body corresponds to the half of the width of the end strip. The end strip runs in a straight-line, convex or concave.</p>
