US 12,146,417 B2
Turbine shroud with ceramic matrix composite blade track segments and method of assembly
Aaron D. Sippel, Zionsville, IN (US)
Assigned to Rolls-Royce Corporation, Indianapolis, IN (US)
Filed by Rolls-Royce Corporation, Indianapolis, IN (US)
Filed on Feb. 23, 2023, as Appl. No. 18/113,386.
Prior Publication US 2024/0287915 A1, Aug. 29, 2024
Int. Cl. F01D 11/00 (2006.01); F01D 11/08 (2006.01); F01D 11/12 (2006.01); F01D 25/00 (2006.01); F01D 25/24 (2006.01)
CPC F01D 25/005 (2013.01) [F01D 11/005 (2013.01); F01D 11/08 (2013.01); F01D 11/12 (2013.01); F01D 11/122 (2013.01); F01D 25/243 (2013.01); F05D 2220/32 (2013.01); F05D 2240/55 (2013.01); F05D 2300/6033 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of assembling a turbine including ceramic matrix composite heat shields, the method comprising
arranging a circumferential end of one turbine shroud segment adjacent to a circumferential end of another turbine shroud segment, wherein each turbine shroud segment includes a gas path panel consisting of ceramic matrix composite material, a forward hook, and an aft hook, the forward hook disposed axially forward of the aft hook with respect to a direction of flow of gas during operation of the turbine,
repeating the arranging step until a full ring of turbine shroud segments is formed,
inserting the full ring of turbine shroud segments into a turbine case so that the forward hooks of the shroud segments engage a forward case hanger of the turbine case and the aft hooks of the shroud segments engage an aft case hanger of the turbine case,
wherein an innermost diameter of the aft case hangers is greater than an outermost diameter of the forward hooks of the shroud segments so that the forward hooks of the full ring of turbine shroud segments are able to pass through the aft case hanger prior to engagement with the forward case hanger during insertion of the full ring of shroud segments into the turbine case.