Rotor disk sealing and blade attachments system

Abstract

A rotor disk assembly comprises a circular body configured to rotate about an axis, a contoured slot formed partially through the circular body in an axial direction, and a protrusion extending radially from the circular body adjacent the contoured slot. A turbine or compressor assembly is also provided. The turbine or compressor assembly may include a first disk configured to rotate about an axis, a first contoured slot formed partially through the first disk, a first protrusion adjacent to the first contoured slot and extending radially outward from the first disk, and a first blade disposed in the first contoured slot and configured to engage the first protrusion.

What is claimed is: 
     
         1 . A rotor disk assembly, comprising:
 a circular body configured to rotate about an axis;   a contoured slot formed partially through the circular body in an axial direction; and   a protrusion extending radially from the axis of the circular body adjacent the contoured slot.   
     
     
         2 . The rotor disk assembly of  claim 1 , further comprising a seal disposed on the protrusion. 
     
     
         3 . The rotor disk assembly of  claim 1 , further comprising a rotating seal feature extending from the circular body. 
     
     
         4 . The rotor disk assembly of  claim 1 , wherein the contoured slot comprises squared edges. 
     
     
         5 . The rotor disk assembly of  claim 4 , wherein at least one of the squared edges is parallel to a radial surface of the protrusion. 
     
     
         6 . The rotor disk assembly of  claim 1 , further comprising a blade retained in the contoured slot. 
     
     
         7 . The rotor disk assembly of  claim 6 , wherein the blade engages the protrusion to retain the blade axially within the contoured slot. 
     
     
         8 . A turbine assembly, comprising:
 a first disk configured to rotate about an axis;   a first contoured slot formed partially through the first disk;   a first protrusion adjacent to the first contoured slot and extending radially outward from the first disk; and   a first blade disposed in the first contoured slot and configured to engage the first protrusion.   
     
     
         9 . The turbine assembly of  claim 8 , further comprising:
 a second disk aft of the first disk;   a stator axially between the first disk and the second disk; and   a brush seal extending radially inward from the stator.   
     
     
         10 . The turbine assembly of  claim 9 , further comprising a landing coupled between the first disk and the second disk, wherein the brush seal extends toward the landing. 
     
     
         11 . The turbine assembly of  claim 10 , further comprising a damper coupled between the stator and the brush seal. 
     
     
         12 . The turbine assembly of  claim 8 , further comprising:
 a second disk aft of the first disk;   a stator axially between the first disk and the second disk;   a first knife seal extending aft from the first disk towards an interface surface of the stator; and   a second knife seal extending forward from the second disk towards the interface surface of the stator.   
     
     
         13 . The turbine assembly of  claim 12 , wherein the interface surface of the stator comprises a honeycomb structure configured to deform in response to contact with at least one of the first knife seal and the second knife seal. 
     
     
         14 . The turbine assembly of  claim 12 , wherein the second disk comprises:
 a second contoured slot formed partially through the second disk;   a second protrusion adjacent to the first contoured slot and extending radially outward from the second disk; and   a second blade disposed in the second contoured slot and configured to engage the second protrusion.   
     
     
         15 . The turbine assembly of  claim 14 , wherein the first protrusion is aft of the first contoured slot and the second protrusion is aft of the second contoured slot. 
     
     
         16 . A disk sealing system, comprising:
 a first disk including a first slot and a first protrusion configured to interface with a first blade;   a stator aft of the first disk.   
     
     
         17 . The disk sealing system of  claim 16 , further comprising a first rotating seal feature extending aft from the first disk, the first rotating seal feature having an annular shape. 
     
     
         18 . The disk sealing system of  claim 16 , wherein the stator further comprises an interface surface, wherein the rotating seal feature contacts the interface surface. 
     
     
         19 . The disk sealing system of  claim 18 , wherein the interface surface comprises a honeycomb structure. 
     
     
         20 . The disk sealing system of  claim 16 , further comprising:
 a damper extending radially inward from the stator; and   a seal at an end of the damper.