TURBINE BLADE WITH AERODYNAMIC PROFILE (VERSIONS) AND TURBINE Russian patent published in 2008 - IPC F01D5/14 

FIELD: motors and pumps.

SUBSTANCE: turbine blade includes aerodynamic profile, base frame, root and dovetail-type joint. Blade has nominal profile in internal central part in accordance with X, Y and Z values of rectangular coordinates given in Table I. Values Z are represented with non-dimensional values from 0 to 1 to be converted into distances Z measured in inches by multiplying Z values by blade height in inches. X and Y values are the distances measured in inches. The said distances set the cross sections of internal central part profile at each Z distance along blade after connection by smooth continuous arcs. Profile cross sections at Z distances are smoothly connected with each other to form the said profile of the internal central part of the blade. Distances X, Y and Z may be changed in proportions depending on the same constant value or any figure to get proportionally increased or proportionally decreased profile of the internal central part. The nominal profile of the internal central part, specified by the distances X, Y and Z describes the envelope with accuracy to ±0.039 inch in normal directions to any place of internal central part surface.

EFFECT: improved aerodynamic effectiveness.

10 cl, 8 dwg, 1 tbl