US 12,454,893 B2
Airfoil anti-rotation ring and assembly
Raymond Surace, Newington, CT (US); and Robert A. White, III, Meriden, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX CORPORATION, Farmington, CT (US)
Filed on Feb. 26, 2024, as Appl. No. 18/586,834.
Application 18/586,834 is a continuation of application No. 17/843,434, filed on Jun. 17, 2022, granted, now 11,939,888.
Prior Publication US 2024/0247591 A1, Jul. 25, 2024
Int. Cl. F01D 9/04 (2006.01)
CPC F01D 9/041 (2013.01) [F05D 2230/60 (2013.01); F05D 2240/12 (2013.01); F05D 2300/175 (2013.01); F05D 2300/6033 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of assembly, the method comprising:
locating a ring in an engine case, the engine case includes a radially inner case side that has circumferentially spaced radial recesses, the radial recesses have open axial sides, the ring has a radially outer ring side facing the radially inner case side, the radially outer ring side has circumferentially spaced radial projections corresponding in position to the radial recesses, the locating including engaging the ring and the engine case by moving the ring such that the radial projections are received through the axially open sides into the radial recesses;
locating a plurality of vanes about an inner radial side of the ring, the ring has a plurality of axially-extending projections circumferentially-spaced around the inner radial side, each of the vanes has a radially outer platform, a flange that projects radially outwardly from the radially outer platform, and a notch that extends axially through the flange such that the notch opens at forward and aft flange faces of the flange; and
aligning the notch of each of the vanes with a corresponding one of the axially-extending projections on the ring and inserting the projection into the notch to thereby prevent the vanes from rotating relative to the ring, and wherein the radial projections are circumferentially aligned with intersections between the radially outer platforms of adjacent ones of the vanes.