RTX Corporation
GAS TURBINE ENGINE COMPONENTS HAVING INTERLACED TRIP STRIP ARRAYS

Abstract:

Airfoils for gas turbine engines are describe. The airfoils include a leading edge having an interior surface with an inflection point line extending radially between a root and a tip of the airfoil. The inflection point line is defined at a location of minimum radii that separates a pressure side and a suction side of the airfoil body. An interlaced trip strip array is arranged along the leading edge and includes a chevron trip strip having an apex and ligaments extending from the apex to form a chevron shape and a skew trip strip arranged proximate to the chevron trip strip with a leading end proximate the inflection point line. The skew trip strip is positioned adjacent to the chevron trip strip such that a gap is formed between the skew trip strip and one of the ligaments of the chevron trip strip.