Turbine Blade Having Platform Cooling Holes

摘要

A turbine blade having a plurality of cooling holes which extend from an outside edge of the platform to a cooling passage formed within the turbine blade and a method of limiting the formation of cracks in the platform of the blade are provided. The plurality of cooling holes in the platform are formed at an approximate angle of 45° to the outside edge of the platform and are formed at the approximate mid-point of the thickness of the platform. The cooling holes are generally cylindrical in shape and have a diameter of approximately 50% of the platform thickness.