| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reduced film blow-off in a film cooling hole. <P>SOLUTION: A component 10 is provided and includes a wall 12 including a first and a second surface 14, 16. The film cooling hole 18 extends through the wall between the first and second surfaces and has an exit region 20 at the second surface. The second surface has a non-planar curvature in the vicinity of the exit region. The film cooling hole is tapered at the exit region so that the curvature of the film cooling hole in the exit region conforms to the non-planar curvature of the second surface, thereby forming a curved exit region. A method forms a film cooling hole 18 in the component 10. The method includes forming a straight section 26 in the component wall 12 so that the straight section extends through the first surface 14, and tapering the film cooling hole so that the curvature of the film cooling hole in the exit region conforms to the non-planar curvature of the second surface 16 of the component wall 12, thereby forming a curved exit region for the film cooling hole. <P>COPYRIGHT: (C)2012,JPO&INPIT |
