Patent ID: 11885233
Assignee: GE AVIO S.R.L.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 12:
13. An airfoil operably coupled to a rotor and assembly, the airfoil being rotatable about a rotational axis, the airfoil comprising:
an outer wall defining a pressure side and a suction side extending in a chord-wise direction between a leading edge to a trailing edge and extending in a span-wise direction between a root and a tip;
a mean camber line extending between the leading edge and the trailing edge and intersecting the leading edge to define a leading edge intersection, and intersecting the trailing edge to define a trailing edge intersection;
an inlet angle, βin, in degrees, defined by an included angle between a line parallel to the mean camber line at the leading edge intersection and the rotational axis;
an outlet angle, βout, in degrees, defined by an included angle between a line parallel to the mean camber line at the trailing edge intersection and the rotational axis; and
a contraction ratio (CR) of greater than 0.55 along at least 80% of a span of the airfoil, wherein the contraction ratio (CR) is determined by, CR
  =
  
   1
   -
   
    
     (
     
      
       cos
       ⁡
       (
       
        β
        out
       
       )
      
      
       cos
       ⁡
       (
       
        β
        
         i
         ⁢
         n
        
       
       )
      
     
     )
    
    .