Gas turbine engine airfoil with dirt purge feature and core for making same

摘要

An airfoil includes a body. The body includes leading and trailing edges adjoining pressure and suction sides to provide an exterior airfoil surface. First and second cooling passages extend in a radial direction from a root to a tip. The first cooling passage includes a tip flag passage that is radially inboard from the tip and extends in a chord-wise direction to a first end that penetrates the trailing edge. The second cooling passage includes a second end terminates adjacent the tip flag passage and a dirt purge passage interconnects the second end to the tip flag passage. A core for making the airfoil is also disclosed.

主权项

1. An airfoil comprising:
a body including leading and trailing edges adjoining pressure and suction sides to provide an exterior airfoil surface, first and second cooling passages extending in a radial direction from a root to a tip, the first cooling passage including a tip flag passage radially inboard from the tip and extending in a chord-wise direction to a first end that penetrates the trailing edge, the second cooling passage including a second end terminating adjacent the tip flag passage, and a dirt purge passage interconnecting the second end to the tip flag passage.