Angled impingement insert

An engine component assembly for impingement cooling, comprising:

• an engine component having a cooled surface, said engine component being at least one of a first stage nozzle, a second stage nozzle, a shroud, a blade, a combustor liner, and a combustor deflector;
• said engine component having a cooling flow path on one side of said cooled surface;
• an insert adjacent to said engine component cooled surface, said insert having a plurality of openings forming an array through said insert, said cooling flow path passing through said plurality of openings to cool said cooled surface;
• a gap between said engine component and said insert;
• and,
• said plurality of openings extending through said insert at a non-orthogonal angle to a surface of said insert and defining an aperture length-to-diameter ratio,
• wherein said aperture length-to-diameter ratio is between about 1 and about 5,
• wherein a ratio of the impingement jet average fluid velocity tangent to the cooled surface, to the impingement jet average fluid velocity normal to the cooled surface is between 0.5 and 2, and
• wherein each non-orthogonal angle is less than about 90 degrees and greater than about 0 degrees, and
• wherein the array through said insert defines a plane within the at least one outer surface of said insert such that each opening of the plurality of openings falls within the plane and is spaced apart in both a first direction and a second direction from at least one other opening of said plurality of openings.

An engine component assembly, comprising:

• an engine component having a cooled surface and having a cooling flow path on one side of said cooled surface;
• an insert adjacent to said engine component cooled surface, said insert having a plurality of openings through said insert at a non-orthogonal angle to a surface of said insert, said plurality of openings forming an array through said insert and defining an aperture length-to-diameter ratio, said cooling flow path passing through said plurality of openings toward said cooled surface;
• and
• a gap between said engine component and said insert,
• wherein said aperture length-to-diameter ratio is between about 1 and about 2.5, and
• wherein each non-orthogonal angle is less than about 90 degrees and greater than about 0 degrees, and
• wherein the array through said insert defines a plane within the at least one outer surface of said insert such that each opening of the plurality of openings falls within the plane and is spaced apart in both a first direction and a second direction from at least one other opening of said plurality of openings.