US 12,338,738 B2
Variable flowpath casings for blade tip clearance control
Pankaj Dhaka, Bengaluru (IN); Paul Mathew, Bengaluru (IN); Ravindra Shankar Ganiger, Bengaluru (IN); and Gautam Naik, Bengaluru (IN)
Assigned to General Electric Company, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Aug. 17, 2022, as Appl. No. 17/889,899.
Claims priority of application No. 202211038562 (IN), filed on Jul. 5, 2022.
Prior Publication US 2024/0011410 A1, Jan. 11, 2024
Int. Cl. F01D 11/24 (2006.01)
CPC F01D 11/24 (2013.01) [F05D 2220/32 (2013.01); F05D 2240/55 (2013.01); F05D 2260/60 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A casing for a turbine engine, the casing comprising:
a first annular substrate extending along an axial direction, the first annular substrate defining a cavity at a radially inward surface of the first annular substrate;
a second annular substrate positioned at least partially within the cavity of the first annular substrate, the second annular substrate including a plurality of axially extending and circumferentially spaced splits forming a plurality of second annular substrate regions, each split extending an axial distance that is less than an axial length of the second annular substrate; and
a tension belt extending circumferentially around a surface of the second annular substrate, the tension belt having a first diameter to support the second annular substrate at a first position, the tension belt adjustable to a second diameter to support the second annular substrate at a second position that is radially inward relative to the first position such that the second annular substrate is movable relative to the first annular substrate based on whether the tension belt has the first diameter or the second diameter, wherein the tension belt is spaced apart from the first annular substrate at the second diameter.