| 摘要 |
A turbine blade (10) including an airfoil (12), the airfoil (12) including an airfoil outer wall (16) having pressure and suction sidewalls (18, 20) joined together at chordally spaced apart leading and trailing edges (22, 24) extending radially outwardly from a blade root (14) to a blade tip surface (30). A continuous squealer tip rail (40) extends radially outwardly from and substantially continuously around the blade tip surface (30) forming a radially outwardly open squealer pocket (46). The squealer tip rail (40) includes an aft portion (54) adjacent to the trailing edge (24). The aft portion (54) traverses the blade tip surface (30) between the pressure and suction sidewalls (18, 20) in a curved undulating path to define alternating forward and rearward facing pockets (56, 58, 60, 62). Each of the forward and rearward facing pockets (56, 58, 60, 62) includes a cooling hole (64a, 64b, 64c, 64d) in fluid communication with a cooling fluid circuit (49) within the airfoil (10).
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