Gas turbine engine
A gas turbine engine configured to combust gaseous hydrogen fuel comprises a combustor comprising an annular combustion chamber outer casing surrounding an inner combustor case and a fuel manifold configured to provide gaseous fuel to a plurality of fuel injectors. The fuel manifold is formed integrally with the combustion chamber outer casing.
1. A gas turbine engine configured to combust gaseous hydrogen fuel, the gas turbine engine comprising:
a combustor comprising an annular combustion chamber outer casing surrounding an inner combustor case and a fuel manifold configured to provide gaseous fuel to a plurality of fuel injectors; wherein
the fuel manifold is formed integrally with the combustion chamber outer casing;
the fuel manifold is provided on a radially inner side of the combustion chamber outer casing; and
the fuel manifold comprises an inner and an outer wall to provide an air gap therebetween, the outer wall being washed by combustor inlet air in use.
2. A gas turbine engine according to claim 1 , wherein each of the combustion chamber casing, fuel manifold, feed arms and at least part of the plurality of fuel injectors are formed integrally.
3. A gas turbine engine according to claim 1 , wherein the air gap is in fluid communication with compressor air.
4. A gas turbine engine according to claim 1 , wherein the fuel manifold comprises a box section.