Abstract:
An air inlet plenum for a gas turbine engine is described. The air inlet plenum (3) comprises a hollow body (17) having an air inlet aperture (19) and an air outlet aperture (21) arranged and configured for connection to the gas turbine engine (6). The air inlet plenum (3) comprises at least one removable portion (23L, 23R), which is removable from the hollow body (17) when the air inlet plenum (3) is connected to a gas turbine engine (6). The air inlet plenum is at least partly made of fiber-reinforced plastic.
Abstract:
Washing of the gas turbine engine, during operation of the gas turbine engine, comprises a washing phase that consists in spraying (4) a detergent liquid substance towards the inlet of the compressor (1) of the engine; the mass flow of the detergent liquid substance to be sprayed is set so that the liquid-to-gas ratio at the inlet of the compressor (1) is more than 1% and less than 5% with reference to the rated mass flow of the compressor (1); the washing phase comprises a first sub-phase during which the flow of the detergent liquid substance is increased gradually and a second sub-phase during which the flow of the detergent liquid substance is maintained constant.
Abstract:
The nozzle (4) is used for spraying a liquid substance towards a compressor (1) of a gas turbine engine, and comprises: - an elongated body (20) having an end for ejecting the liquid substance, - a conduit (21) for said liquid substance internal to said elongated body (20) and extending up to said end, - a recess (22) located at said end, wherein said conduit (21) ends in said recess (22); wherein said recess (22) opens towards the lateral surface of said elongated body (20), typically a cylindrical body, and said conduit (21) is tangential to the bottom of said recess (22).