Airfoil insert with castellated end

摘要

An airfoil insert (62) for discharging an increased volume of cooling air comprises a perforated, tubular-shaped body (90) with a first end (60) for introducing the cooling air. A second end (74) located opposite the first end (60) discharges an increased volume of the cooling air for use in cooling inboard components. The second end (74) approximates a castellated wall and comprises one or more tabs (104) spaced about the periphery. Alternating between tabs (104) are notches (106) in the body (90) for discharging the cooling air. Covers (108) may be joined to opposing tabs (104) by bridging across the second end, or opposing tabs (104) themselves may be joined together by bridging across the second end (74).