Patent ID: 8015829

Claim:
A gas turbine engine combustor comprising: an inboard wall; an outboard wall; and a forward bulkhead extending the inboard and outboard walls and cooperating therewith to define a combustor interior volume, wherein, at least a first wall of said inboard and outboard walls comprises: an exterior shell; and an interior heat shield comprising a plurality of panels having: an interior surface; an exterior surface; a perimeter having leading and trailing edges and first and second lateral edges; and a plurality of pins protruding from the exterior surface toward the shell wherein the shell has a plurality of holes for directing air to a space between the shell and heat shield and adapted for preferentially directing said air toward leading edge portions of first stage vanes of a turbine section, the plurality of holes comprising a plurality of first groups and a plurality of second groups, the holes of the first groups being smaller and more closely spaced than the holes of the second groups.