Blading member for a fluid flow machine

Abstract

A blading member for a fluid flow machine, for example, for use in gas turbine engines. The blading member includes a platform member and an airfoil member. The platform member and airfoil member are designed to allow for easy assembly/disassembly and replacement of members independent of other members.

1 . A blading member for a fluid flow machine, the blading member comprising a platform member and at least one airfoil member, the platform member comprising a platform member receiver section, said platform member receiver section comprising a first face and a second face ( 8 ), and a platform member receiver opening being disposed in the receiver section, the receiver opening extending from the first face, the airfoil member extending from an airfoil base to an airfoil tip and comprising an airfoil member foot section and an airfoil member aerodynamic section, wherein the airfoil member foot section extends from the airfoil base to the airfoil member aerodynamic section and the airfoil member aerodynamic section extends from the airfoil member foot section to the airfoil tip,
 the airfoil member foot section comprising an airfoil member male mating section received within the platform member receiver opening and the airfoil member aerodynamic section projecting from the first face of the platform member receiver section, wherein   at least one support shoulder is disposed on the airfoil foot section and a counterpart support shoulder is disposed on the platform member, wherein the support shoulder and the counterpart support shoulder abut each other, characterized in that at least one support shoulder and a corresponding counterpart support shoulder are beveled, wherein the bevel angles (a) of said support shoulder and said corresponding counterpart support shoulder are at least essentially identical at least at corresponding mating points to within ±5° or less.   
     
     
         2 . The blading member according to  claim 1 , wherein the platform member receiver opening is a platform member receiver through opening extending from the first face to the second face. 
     
     
         3 . The blading member according to  claim 1 , wherein the counterpart support shoulder is provided within the platform member receiver opening. 
     
     
         4 . The blading member according to  claim 1 , wherein the bevel angle (a) is constant along the extent of the shoulder. 
     
     
         5 . The blading member according to  claim 1 , wherein the support shoulder is at least provided on a side of the airfoil member foot section disposed on a suction side of the airfoil member aerodynamic section and on a side of the airfoil member foot section disposed on a pressure side of the airfoil member aerodynamic section. 
     
     
         6 . The blading member according to  claim 1 , wherein the support shoulder extends on the periphery of a cross section of the airfoil member foot section from a side disposed on a pressure side of the airfoil aerodynamic section to a side disposed on a suction side of the airfoil member aerodynamic section. 
     
     
         7 . The blading member according to  claim 1 , wherein the support shoulder extends around the entire periphery of a cross section of the airfoil member foot section. 
     
     
         8 . The blading member according to  claim 1 , wherein the counterpart support shoulder is at least provided on a side of the platform member receiver opening which is disposed on a suction side of the airfoil member aerodynamic section and on a side of the platform member receiver opening which is disposed on a pressure side of the airfoil member aerodynamic section. 
     
     
         9 . The blading member according to  claim 1 , wherein the counterpart support shoulder extends on the periphery of a cross section of the platform member receiver opening from a side which is disposed on a pressure side of the airfoil aerodynamic section to a side which is disposed on a suction side of the airfoil member aerodynamic section. 
     
     
         10 . The blading member according to  claim 1 , wherein the counterpart support shoulder extends around the entire periphery of a cross section of the platform member receiver opening. 
     
     
         11 . The blading member according to  claim 1 , wherein the platform member comprises a multitude of platform receiver openings and the blading member further comprises a corresponding multitude of airfoil members, wherein at least the airfoil member male mating section of the airfoil member foot section of each airfoil member is received in a platform receiver opening. 
     
     
         12 . The blading member according to  claim 1 , further comprising an airfoil member head section is provided at the airfoil tip of an airfoil member, the blading member further comprising a second platform member with at least one platform receiver opening being provided in the second platform member, wherein at least a male mating section of the airfoil head section is received in the platform receiver opening of the second platform member. 
     
     
         13 . The blading member according to  claim 12 , wherein a beveled support shoulder is provided on the airfoil head section and a corresponding mating counterpart support shoulder is provided on the second platform member and in particular within a second platform member receiver opening in which the airfoil member head section is received. 
     
     
         14 . An airfoil member for a blading member according to  claim 1 , the airfoil member comprising an airfoil aerodynamic section and an airfoil member foot section, wherein a support shoulder is provided on the airfoil member foot section, characterized in that the support shoulder is beveled. 
     
     
         15 . A platform member for a blading member according to  claim 1 , the platform member comprising a receiver section, said receiver section comprising a first face and a second face, and a receiver opening being disposed in the receiver section and extending from the first face, wherein a counterpart support shoulder is provided on the platform member, and wherein in particular the platform receiver opening is a platform receiver through opening, wherein further in particular the counterpart support shoulder is provided within the receiver opening, characterized in that the counterpart support shoulder is beveled.