TURBOMACHINE COOLED BLADE Russian patent published in 1998 - IPC

FIELD: cooling systems for turbine blades. SUBSTANCE: cooling air admitted to central cavity 2 is bifurcated. One of currents goes between pins 11 to exit edge 10. Other current designed for cooling entrance edge 4 of feather 1 is accelerated in inlet ducts 5 and enters radial duct 3 at relatively high speed forming intensive vortex flow therein that causes active heat transfer from entrance edge 4 to air flow. Hot air goes through outlet ducts 6 to external surface of convex part of feather 1 ensuring film cooling on it. EFFECT: improved efficiency of blade cooling. 2 dwg