US 12,234,986 B2
Article and method for manufacturing an expanded combustor liner
Lawrence A. Binek, Glastonbury, CT (US); and Jesse R. Boyer, Middletown, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Jul. 16, 2020, as Appl. No. 16/930,797.
Prior Publication US 2022/0018541 A1, Jan. 20, 2022
Int. Cl. F02C 3/14 (2006.01); F23R 3/00 (2006.01)
CPC F23R 3/002 (2013.01) [F02C 3/14 (2013.01); F23R 2900/00 (2013.01); F23R 2900/00017 (2013.01); F23R 2900/00018 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method, comprising: manufacturing a nested combustor liner into a green state, the nested combustion liner extending circumferentially around an axis and comprising:
a plurality of annular interior walls radially adjacent to one another and circumferentially surrounding an exhaust duct aperture, the plurality of annular interior walls including a first annular interior wall, a second annular interior wall, and a third annular interior wall, the first annular interior wall in an interior wall nested position, and the third annular interior wall is positioned radially outward of, extends circumferentially about and axially overlaps the second annular interior wall and the first annular interior wall during the manufacturing;
a plurality of annular exterior walls radially adjacent to one another and radially spaced apart from and circumferentially surrounding the plurality of annular interior walls, the plurality of annular exterior walls including a first annular exterior wall, a second annular exterior wall, and a third annular exterior wall, the first annular exterior wall in an exterior wall nested position and the third annular exterior wall circumscribes and axially overlaps the second annular exterior wall and the first annular exterior wall during the manufacturing;
an ignitor wall attached to the first annular interior wall at a first interior end, extending radially toward and attached to the first annular exterior wall at a first exterior end;
assembling the plurality of annular interior walls and the plurality of annular exterior walls to form an assembled combustor liner, the assembling comprising
moving the second annular interior wall along the axis relative to the first annular interior wall from the interior wall nested position to an interior wall extended position in a direction away from the ignitor wall;
moving the second annular exterior wall along the axis relative to the first annular exterior wall from the exterior wall nested position to an exterior wall extended position in the direction away from the ignitor wall;
moving the third annular interior wall along the axis relative to the second annular interior wall from a second interior wall nested position to a second interior wall extended position in the direction away from the ignitor wall and the second annular interior wall;
moving the third annular exterior wall along the axis relative to the second annular exterior wall from a second exterior wall nested position to a second exterior wall extended position in the direction away from the ignitor wall and the second annular exterior wall; and
densifying the assembled combustor liner.
 
11. A method, comprising:
manufacturing a nested combustor liner into a green state, the nested combustion liner comprising:
a plurality of annular interior walls including a first interior wall, a second interior wall and a third interior wall, the second interior wall positioned radially outward of, extending circumferentially about and axially overlapping the first interior wall, and the third interior wall positioned radially outward of, extending circumferentially about and axially overlapping the first interior wall and the second interior wall;
a plurality of annular exterior walls radially outboard of the plurality of annular interior walls, the plurality of annular exterior walls including a first exterior wall, a second exterior wall and a third exterior wall, the second exterior wall being positioned radially outward of, extending circumferentially about, and axially overlapping the first exterior wall, and the third exterior wall being positioned radially outward of, extending circumferentially about, and axially overlapping the first exterior wall and the second exterior wall;
an ignitor wall attached to and extending radially between the first interior wall the first exterior wall;
assembling the plurality of annular interior walls and the plurality of annular exterior walls to form an assembled combustor liner, the assembling comprising the steps of
moving the second interior wall along the first interior wall to a second interior wall extended position downstream the first interior wall and in a direction of combustor flow, and moving the third interior wall along the second interior wall to a third interior wall extended position downstream the second interior wall;
moving the second exterior wall along the first exterior wall to a second exterior wall extended position downstream the first exterior wall and in the direction of combustor flow, and moving the third exterior wall along the second exterior wall to a third exterior wall extended position downstream the second exterior wall; and
densifying the assembled combustor liner.