| 摘要 |
An airfoil (100) having an overlapping herringbone filmhole pattern (52) is disclosed. For instance, the airfoil (100) may have filmholes arranged in filmrows (55), each filmrow (55) divided into groups of filmholes. A first group may be oriented to direct cooling air generally radially outward over a surface of the airfoil (100) and a second group may be oriented to direct cooling air generally radially inward over a surface of the airfoil (100). Between the first group and the second group of filmholes in each filmrow (55), a transition region (110) exists. A transition region filmrow group (95) may be disposed within the transition region (110) and may be co-linear with or staggered relative to the first group and/or the second group. In this manner, the transition region filmrow group (95) enhances the effectiveness of the cooling proximate to the transition region (110). |
