FIELD: machine building.
SUBSTANCE: invention relates to working blades of turbines of turbojet engines. Working blade comprises shaped part of outer surface and shaped part of inner surface, having an aerodynamic shape, with a nominal profile built on characteristic base points, wherein characteristic points are connected smoothly by quadratic spline while the section of the profile in the direction along the radius of the turbine wheel is constant, the blade can be made of a single crystal of aluminium oxide (Al2O3), wherein said blade is made by cutting monocrystal.
EFFECT: invention allows simplifying the turbine design, reducing the cost of production at its sufficient efficiency in a wide range of rotation speeds, increasing the gas temperature before the turbine without using the cooling channels in the blade.
2 cl, 2 dwg
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