GAS TURBINE COMPONENT, AIRFOIL COMPONENT AND CORRESPONDING METHOD OF VECTORING COOLING AIR

摘要

The components and method described herein adapt the orientation, position and/or diffusion angles of showerhead cooling holes (120;220) depending on the external gas/streamline flow direction (105). In regions, for example, where the stagnation line (140;240) is on the pressure side (115), the breakouts of the showerhead holes (120;220) substantially face aft (e.g., primarily towards the suction side (125)). The location and positioning of the holes (120;220) may be oriented according to the direction of incoming gas flows. There is probided a a row of radially disposed showerhead cooling holes (120;220), wherein the row of radially disposed showerhead cooling holes (120;220) are configured to alter a vector of cooling air to align with a cooling flow streamline (105) towards a leading edge nose (130) of the component.