| 摘要 |
FIELD: machine building.SUBSTANCE: subsonic blade of axial turbine machine intended for radial installation on the specified machine, contains frond edge, rear edge and two aerodynamic surfaces. The aerodynamic surfaces are located at opposite sides and pass through the blade length, at that each connects the front edge with the rear edge. The blade front edge has S-shaped lateral profile. The most front part of the front edge is at height within 3-20% of blade length, and/or the most rear part of the rear edge is at height within range 85-97% of the blade height. The another invention of the group relates to the compressor of the axial turbine machine containing rotor with at least one stage of rotor blades and stator with at least one stage of stator blades, at that blades of at least one stage of rotor and stator are made as specified above. One more invention of the group relates to axial turbine machine containing the above compressor.EFFECT: group of inventions increases the engine capacity by at least 1% in comparison with the optimised stage having blades with front edges of S-shape profile.19 cl, 5 dwg |
