Fuel manifold and fuel injector arrangement for a combustion chamber

A fuel manifold and fuel injector arrangement for supplying fuel to at least one combustion chamber, the fuel manifold and fuel injector arrangement comprising:

• an annular combustion chamber casing arranged around the at least one combustion chamber;
• a plurality of circumferentially spaced fuel injectors arranged to supply the fuel comprising at least one fuel into the at least one combustion chamber, each fuel injector of the plurality of circumferentially spaced fuel injectors having a main fuel nozzle and a pilot fuel nozzle;
• a main fuel manifold arranged to supply a main fuel of the fuel to the main fuel nozzle of each fuel injector, the main fuel manifold including a plurality of flexible main fuel pipes;
• at least one pilot fuel manifold arranged to supply a pilot fuel of the fuel to the pilot fuel nozzle of each fuel injector;
• an additional fuel manifold arranged to supply the main fuel of the fuel to the main fuel nozzle of each fuel injector, each fuel injector having a fuel feed arm extending through a corresponding aperture in the annular combustion chamber;
• a plurality of cross-piece connectors, each cross-piece connector comprising a stem and four arms, the stem of each cross-piece connector being mounted on an outer end of a respective one of the fuel feed arms, a first arm and a third arm extending in opposite directions from the stem, a second arm and a fourth arm extending in opposite directions from the stem;
• and
• each flexible main fuel pipe interconnects the first arm of one cross-piece connector with the third arm of an adjacent cross-piece connector, each cross-piece connector configured to arrange the first arm and the third arm at an angle relative to a plane perpendicular to an axis of the annular combustion chamber casing such that the main fuel manifold extends around the annular combustion chamber casing sinusoidally, the second arm of each cross-piece connector is connected to the pilot fuel manifold, and the fourth arm of each cross-piece connector is connected to the additional fuel manifold.

A fuel manifold and fuel injector arrangement for supplying fuel to at least one combustion chamber, the fuel manifold and fuel injector arrangement comprising:

• an annular combustion chamber casing arranged around the at least one combustion chamber;
• a plurality of circumferentially spaced fuel injectors arranged to supply the fuel comprising at least one fuel into the at least one combustion chamber, each fuel injector of the plurality of circumferentially spaced fuel injectors having a main fuel nozzle and a pilot fuel nozzle;
• a main fuel manifold arranged to supply a first fuel of the fuel to the main fuel nozzle of each fuel injector, the main fuel manifold comprising a plurality of flexible main fuel pipes;
• at least one pilot fuel manifold arranged to supply a second fuel of the fuel to the pilot fuel nozzle of each fuel injector, each fuel injector having a fuel feed arm extending through a corresponding aperture in the annular combustion chamber casing;
• a plurality of cross-piece connectors, each cross-piece connector comprising a stem and three arms, the stem of each cross-piece connector being mounted on an outer end of a respective one of the fuel feed arms, a first arm and a third arm extending in opposite directions from the stem, a second arm extending from the stem;
• and
• each flexible main fuel pipe interconnects the first arm of one cross-piece connector with the third arm of an adjacent cross-piece connector, each cross-piece connector being arranged such that the first arm and the third arm are arranged at an angle relative to a plane perpendicular to an axis of the annular combustion chamber casing such that the main fuel manifold extends around the annular combustion chamber casing sinusoidally, and the second arm of each cross-piece connector is connected to the pilot fuel manifold.