Patent ID: 11920496
Assignee: DOOSAN ENERBILITY CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 1:
2. The airfoil according to claim 1, wherein the first cooling passage comprises:
a first inlet extending downward from the bottom of the leading edge and through which the first cooling fluid flows;
a 1_1 flow channel allowing the first cooling fluid introduced into the first inlet to flow toward an airfoil tip;
a 1_2 flow channel formed adjacent to the 1_1 flow channel and allowing the first cooling fluid to flow toward a root;
a 1_3 flow channel formed adjacent to the 1_2 flow channel and allowing the first cooling fluid to flow toward the airfoil tip;
a 1_1 forward channel extending toward the trailing edge from an upper end of the 1_1 flow channel to 1_2 flow channel; and
a 1_2 forward channel extending toward the trailing edge from a lower end of the 1_2 flow channel to the 1_3 flow channel.