US 12,352,441 B2
Reinforced film floatwall for a gas turbine engine
Dibesh D. Joshi, South Windsor, CT (US); Gary J. Dillard, Gainesville, FL (US); Albert K. Cheung, East Hampton, CT (US); and Stephen K. Kramer, Cromwell, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX Corporation, Farmington, CT (US)
Filed on Sep. 22, 2023, as Appl. No. 18/371,929.
Prior Publication US 2025/0102146 A1, Mar. 27, 2025
Int. Cl. F23R 3/00 (2006.01); F23R 3/60 (2006.01)
CPC F23R 3/002 (2013.01) [F23R 3/60 (2013.01); F05D 2260/201 (2013.01); F05D 2260/202 (2013.01); F05D 2260/22141 (2013.01)] 19 Claims
OG exemplary drawing
 
19. A method for cooling an inner surface of a heat shield of a combustor of a gas turbine engine, comprising:
securing a plurality of heat shield panels to at least one combustor liner of the combustor to form the heat shield, each one of the plurality of heat shield panels including a panel portion and a first forward rail and a second rearward rail each extending from an outer surface of the panel portion, the panel portion including an inner surface opposite of the outer surface, the panel portion also includes a forward end and a rearward end, the forward end of the panel portion is axially forward of the rearward end of an adjacent heat shield panel of the plurality of heat shield panels such that a gap is defined between the outer surface of the panel portion of one heat shield panel of the plurality of heat shield panels and an inner surface of the panel portion of an adjacent heat shield panel of the plurality of heat shield panels, the panel portion also includes a plurality of apertures extending from the outer surface to the inner surface; a plurality of cooling pins extending upwardly and away from the outer surface towards a surface of the at least one combustor liner, the plurality of cooling pins being located rearward of the second rearward rail; a plurality of effusion holes extending from the outer surface of the panel portion to the inner surface of the panel portion, the plurality of effusion holes extending from the outer surface of the panel portion to the inner surface of the panel portion in an area between the first forward rail and a second rearward rail, the plurality of effusion holes including effusion outlets located in the inner surface of the panel portion; and wherein the plurality of cooling pins are not located forward of the second rearward rail such that slot cooling is provided to the inner surface of the panel portion forward of the first forward rail and effusion cooling is provided to the inner surface of the panel portion rearward of the first forward rail and forward of the second rearward rail, and film cooling is provided to the inner surface of the panel portion rearward of the second rearward rail.