| 摘要 |
A vane cluster (60) has a coated metallic substrate. The cluster (60) includes a platform (68) and a shroud (72). At least first and second airfoils (62,64) extend between an outer face (74) of the platform (68) and an inner face (76) of the shroud (72). Each airfoil has a pressure side (144,154) and a suction side (146,156). The pressure side (144) of the first airfoil (62) faces the suction side (156) of the second airfoil (64). The cluster (60) includes a cooling passageway system including one or more first feed passageways in the first airfoil (62) and one or more second feed passageways in the second airfoil (64). At least a first side selected from the pressure side (144) of the first airfoil (62) and the suction side (156) of the second airfoil (64) includes a first region (164,172) with a local thinning or gap in the coating. Along the first side, the cooling passageway system includes means for locally cooling said first region. |
