Patent ID: 11939882
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. The turbine rotor blade according to claim 8,
wherein each of the cooling holes of the pressure-side cooling hole row in the first range extends along a direction parallel to a first straight line intersecting the pressure surface,
wherein each of the cooling holes of the suction-side cooling hole row in the first range extends along a direction parallel to a second straight line intersecting the suction surface,
wherein each of the cooling holes of the pressure-side cooling hole row in the second range extends along a direction parallel to a third straight line intersecting the pressure surface,
wherein each of the cooling holes of the suction-side cooling hole row in the second range extends along a direction parallel to a fourth straight line intersecting the suction surface, and
wherein an angle between the third straight line and the fourth straight line is less than an angle between the first straight line and the second straight line.