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A combustor for a gas turbine engine includes a metal engine block including a wall portion defining a housing for a combustor having ceramic liner components. A ceramic outlet duct is supported by a compliant seal on the metal block and a reaction chamber liner is stacked thereon and partly closed

A combustor for a gas turbine engine includes a metal engine block including a wall portion defining a housing for a combustor having ceramic liner components. A ceramic outlet duct is supported by a compliant seal on the metal block and a reaction chamber liner is stacked thereon and partly closed at one end by a ceramic bypass swirl plate which is spring loaded by a plurality of circumferentially spaced, spring loaded guide rods and wherein each of the guide rods has one end thereof directed exteriorly of a metal cover plate on the engine block to react against externally located biasing springs cooled by ambient air and wherein the rod spring support arrangement maintains the stacked ceramic components together so that a normal force is maintained on the seal between the outlet duct and the engine block under all operating conditions. The support arrangement also is operative to accommodate a substantial difference in thermal expansion between the ceramic liner components of the combustor and the metal material of the engine block.

대표청구항 ▼

In a gas turbine engine having a spool with an air compressor and a turbine for driving said compressor and a metal engine block for enclosing the spool the improvement comprising: a combustor wall portion of the metal engine block forming an inlet air plenum for supplying air to a combustor and ada

In a gas turbine engine having a spool with an air compressor and a turbine for driving said compressor and a metal engine block for enclosing the spool the improvement comprising: a combustor wall portion of the metal engine block forming an inlet air plenum for supplying air to a combustor and adapted to be fluidly connected to the air compressor, said combustor wall portion including an annular resilient seal thereon, a ceramic combustor outlet transition tube having a thermal expansion coefficient less than that of the metal engine block and extending through said annular resilient seal and having a bearing flange thereon supportingly received by the resilient seal, a ceramic combustor liner supported on said transition tube in axial alignment therewith and including an upper open end, a ceramic bypass plate having a coefficient of expansion corresponding to that of said transition tube and said combustor liner and vertically supported on said upper open end to define a high temperature reaction chamber within said ceramic combustor liner, and means including a plurality of equidistantly spaced spring supports located externally of the metal engine block to be cooled by ambient air and operative to position and seal the ceramic combustor liner to the outlet transition tube and the ceramic bypass plate to the upper open end and to position them together against mechanical and thermal expansion induced loading therebetween during combustor operation.