| 摘要 |
<p>A turbine airfoil (16) includes pressure and suction sidewalls (24,26) joined together at leading and trailing edges (28,30), and extending from root (32) to tip (34). The tip includes a tip rib (36) extending from a tip cap (40) enclosing an internal flow channel (18) between the sidewalls. An aligned pair of first and second holes (42,44) extend through the tip cap and rib, respectively, for discharging coolant from the flow channel. <IMAGE></p> |
