AIRFOIL PROFILE Russian patent published in 2017 - IPC F01D5/18 

FIELD: machine engineering.

SUBSTANCE: airfoil profile has the inner surface, the outer surface opposite to the inner surface, the high pressure side, the low pressure side, the opposite high pressure side, the flow braking line, located between the high and low pressure sides downstream from the braking line. The first column of the recessed sections overlapping each other, corresponding to the flow braking line, is located on the outer surface. The flow braking line crosses the part of each section. The cooling channel in each recessed section, corresponding to the flow braking line, provides the flow-through communication between the inner and the outer surfaces.

EFFECT: prevent the blades wear.

8 cl, 10 dwg