| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a turbine blade pattern in which a cooling has been further improved for coping with a thermal failure found recently, and further increasing its effective lifetime. <P>SOLUTION: A hollow turbine blade pattern (12) includes a positive pressure and negative pressure side walls (22, 24) that extend in a blade length direction between a root (26) and a tip (28) and extend in a blade chord direction between leading and tailing edges (30, 32) that are opposed to each other. The positive pressure side wall (22) includes a first pattern of a first hole (38) distributed in a blade length and a blade chord directions over the most part of the positive pressure side wall (22), and a second pattern of a second hole (40) distributed in blade length and blade chord directions over a small part of the positive pressure side wall (22) between the tip (28) of the blade pattern (12) and a middle part of the blade length. <P>COPYRIGHT: (C)2007,JPO&INPIT |
