BLADE AND DIHEDRAL ANGLE OF BLADE Russian patent published in 2020 - IPC F01D5/14 F04D29/32 

FIELD: machine building.

SUBSTANCE: invention relates to a compressor blade defined at each of its points by a sweep angle and an angle ν comprising: a shank; blade end, wherein distance between shank and end, measured along axis, called radial axis, perpendicular to rotational axis of compressor, is called radial height (h); zone between shank and tip, first section of which has strictly positive angle ν of front edge, and second section has strictly negative angle ν of front edge; zone of maximum angle ν, located along said radial axis between r=0.25h and r=0.7h.

EFFECT: optimization of aerodynamic characteristics of each blade rim, determined, in particular, margin by surging and output, as well as providing or maintaining during each optimization of mechanical strength of each blade.

8 cl, 11 dwg