Patent ID: 8672629

Claim:
A turbine blade comprising: an open cavity at a distal tip of the blade, the cavity being defined by a bottom wall and a side wall extending along a perimeter of the distal tip in a continuous extension of a lower surface wall and an upper surface wall of the blade; an opening provided in the side wall of the cavity in a vicinity of a leading edge of the blade opening into the cavity; and a deflector which extends at least in a median portion of the cavity between the leading edge and a trailing edge, wherein the deflector includes a first concave face and a second convex face, the first concave face facing a lower surface wall side of the side wall and the second convex face facing an upper surface wall side of the side wall, and wherein an upstream tip of the deflector is distant from the leading edge of the blade and a downstream tip of the deflector is distant from the trailing edge of the blade such that the deflector is separate from the side wall.