BLADE FOR A COMPRESSOR AND THE COMPRESSOR WITH SUCH A BLADE Russian patent published in 2018 - IPC F04D29/38 F01D5/14 

FIELD: machine building.

SUBSTANCE: blade (10) of an axial compressor, with root (11) over which the blade is fastened to a rotor disk of the axial compressor, and with feather (12), which serves for the deflection of the flow, wherein feather (12) having inlet edge (14), outlet edge (15), and discharge side (16) extending between inlet edge (14) and outlet edge (15) and suction side (17) extending between inlet edge (14) and outlet edge (15), and inlet edge (14), outlet edge (15), discharge side (16) and suction side (17) together determine feather profile (12) in Cartesian coordinates x, y, z such that first and second profile coordinates or values of coordinates x, y when connected via continuous arcs respectively define a smooth profile section at the radial height of the section along the third profile coordinate or along the third value of coordinate z and that the connection of the radial profile section with a smoothing function defines feather (12) profile, wherein in the area of each radial profile section, the maximum thickness of the profile is in the range of 45–52 % of chord (18) length extending from inlet edge (14) towards outlet edge (15) and between discharge side (16) and suction side (17). Consequently, the proposed blades are impervious or resistant to Choke-flutter, blades with high Choke-strength.

EFFECT: blade for a compressor and the compressor with such a blade are proposed.

8 cl, 4 dwg, 1 tbl