Abstract: A washing system is described for a gas turbine engine with an axial compressor, comprising: an inlet screen at the air flow inlet of the compressor to protect the compressor from foreign object damage, an arrangement of nozzles and manifolds for spraying the washing liquid, and a washing liquid supply system connected to the arrangement; the inlet screen comprises a supporting structure and a filtering net fixed to the supporting structure; the arrangement of nozzles and manifolds is integrated in the supporting structure of the inlet screen.

Abstract: A washing system is described for a gas turbine engine with an axial compressor, comprising: an inlet screen at the air flow inlet of the compressor to protect the compressor from foreign object damage, an arrangement of nozzles and manifolds for spraying the washing liquid, and a washing liquid supply system connected to the arrangement; the inlet screen comprises a supporting structure and a filtering net fixed to the supporting structure; the arrangement of nozzles and manifolds is integrated in the supporting structure of the inlet screen.

Abstract: An air inlet plenum for a gas turbine engine is described. The air inlet plenum comprises a hollow body having an air inlet aperture and an air outlet aperture arranged and configured for connection to the gas turbine engine. The air inlet plenum comprises at least one removable portion, which is removable from the hollow body when the air inlet plenum is connected to a gas turbine engine. The air inlet plenum is at least partly made of fiber-reinforced plastic.