FIELD: machine building.
SUBSTANCE: fan rotor blade has leading edge 41 of the rotor blade. The vertical section 49 of the central bushing is created on the side of the central busing of the leading edge 41 of the rotor blade. Semispan section 51 with inclination to back is formed from the top edge of the vertical section 49 of the central bushing towards semispan side of the leading edge 41 of the rotor blade. Wingtip section 53 with inclination forward is made from the top edge of semispan section 51 with inclination backward towards end of wingtip of the leading edge 41 of the rotor blade. The central bushing section 55 with inclination backward is made from edge of the central bushing of the leading edge 41 of the rotor blade towards the base edge of the vertical section 49 of the central bushing. Section 55 of the central bushing with inclination backwards is inclined back such that its top edge is behind its base edge.
EFFECT: increased strength and aerodynamic characteristics of the fan blade.
5 cl, 7 dwg
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