| 摘要 |
<P>PROBLEM TO BE SOLVED: To further enhance cooling efficiency of turbine blades included in a gas turbine engine or the like. <P>SOLUTION: A cooling air hole 5 comprises a straight pipe portion 5a disposed on the inner wall face side of a blade body and an enlarged diameter portion 5b disposed on the outer wall face side of the blade body, and includes a guide groove 6 disposed on an inner wall of the enlarged diameter portion 5b and guiding cooling air Y in the enlarged diameter portion 5b. <P>COPYRIGHT: (C)2013,JPO&INPIT |
