Cooling arrangement for gas turbine engine component

An airfoil for a gas turbine engine comprising:

• an airfoil section extending in a radial direction from a root section to a tip portion, the airfoil section having an external wall defining pressure and suction sides extending in a chordwise direction between a leading edge and a trailing edge, and the pressure and suction sides spaced apart in a thickness direction between the leading edge and the trailing edge;
• a platform section between the root section and the tip portion relative to the radial direction;
• wherein the airfoil section establishes an internal cooling arrangement comprising:
• a first cooling passage including a first section and a tip flag section joined at a junction, the first section extending in the radial direction from the root section, and the tip flag section extending in the chordwise direction along the tip portion from the junction to the trailing edge;
• wherein the first section includes a plurality of branched paths dimensioned to branch outwardly from a trunk of the first section at a position inward of the platform section relative to the radial direction, and the plurality of branched paths are dimensioned to join together along the junction;
• and
• wherein the plurality of branched paths includes first, second and third branched paths separated by a plurality of turning vanes at the junction.

An airfoil for a gas turbine engine comprising:

• an airfoil section extending in a radial direction from a root section to a tip portion, the airfoil section having an external wall defining pressure and suction sides extending in a chordwise direction between a leading edge and a trailing edge, the pressure and suction sides spaced apart in a thickness direction between the leading edge and the trailing edge, and wherein the airfoil section includes an internal wall;
• and
• a platform section between the root section and the tip portion relative to the radial direction;
• wherein the airfoil section establishes an internal cooling arrangement comprising:
• a first cooling passage including a first section and a tip flag section joined at a junction, the first section extending in the radial direction from the root section, and the tip flag section extending in the chordwise direction along the tip portion from the junction to the trailing edge;
• wherein the first section includes a plurality of branched paths dimensioned to branch outwardly from a trunk of the first section at a position inward of the platform section relative to the radial direction, and the plurality of branched paths are dimensioned to join together along the junction;
• a serpentine cooling passage including a first section, a second section and a third section, the second section interconnecting the first section and the third section, and the first section extending outwardly from the root section and the third section extending inwardly from the tip portion relative to the radial direction;
• and
• wherein the tip flag section and the third section of the serpentine cooling passage are situated on opposite sides of the internal wall relative to the thickness direction.