Axial centrifugal compressor with scalable rake angle

Abstract

A mobile wheel for a centrifugal or axial centrifugal compressor for a turbine engine, that includes a base on which a plurality of vanes are attached at their feet and extend between a leading edge and a trailing edge, the trailing edge being inclined at the base of the vane by a slope angle relative to the middle plane extending through the base thereof in the rotation direction of the compressor. The trailing edge has at the head of the vane a slope angle smaller than the slope angle at the vane base.

1 - 8 . (canceled) 
     
     
         9 . A moving wheel for a centrifugal or mixed axial-centrifugal compressor of a turbomachine, comprising:
 a base on which a plurality of blades extending between a leading edge and a trailing edge are fixed by their feet, the trailing edge being inclined at a foot of the blade by a slope angle α with respect to the meridian plane that passes through it at its foot, in a direction of rotation of the compressor,   wherein the trailing edge has at the head of the blade a slope angle β that is less than its slope angle α at the blade foot.   
     
     
         10 . The moving wheel as claimed in  claim 9 , in which the slope angle β of the trailing edge at the blade head is close to zero, or is zero. 
     
     
         11 . The moving wheel as claimed in  claim 9 , in which the slope angle β of the trailing edge at the blade head is negative. 
     
     
         12 . The moving wheel as claimed in  claim 9 , in which curvature of the trailing edge is constant between the foot and the head of the trailing edge. 
     
     
         13 . The moving wheel as claimed in  claim 9 , in which curvature of the trailing edge is continuously variable between the foot and the head of the trailing edge. 
     
     
         14 . A compressor comprising a moving wheel as claimed in  claim 9 . 
     
     
         15 . A turbomachine comprising a compressor as claimed in  claim 14 . 
     
     
         16 . An aircraft comprising a turbomachine as claimed in  claim 15 .