Abstract: An inkjet printing system includes: (a) an inkjet printhead having a rigid elongate manifold with first and second parallel ink supply channels extending along a length of the manifold between respective ink ports positioned at opposite ends thereof; and a plurality of printhead chips mounted to a lower surface of the manifold, the ink supply channels supplying ink to the printhead chips via ink outlets defined in the lower surface. One end of the manifold has a first ink inlet port for the first ink supply channel and an ink outlet port for the second ink supply channel. The other end of the manifold has a first ink outlet port for the first ink supply channel and a second ink inlet port for the second ink supply channel. An ink delivery system is configured to flow ink along the first and second channels in opposite directions.

Abstract: A cleaning system for cleaning gas paths in an engine core of a gas turbine engine includes a source of an engine cleaning liquid, an engine cleaning mist forming unit, a delivery device, a pump, and a mist collecting arrangement. The forming unit vapourises the cleaning liquid to form a cleaning mist and delivers the mist into the engine core. The delivery device delivers the cleaning liquid to the forming unit. The pump draws the mist through the engine core to clean the gas paths within the engine core. The mist collecting arrangement includes a condensing chamber, collects the mist that has passed through the engine core, and condenses the collected mist in the condensing chamber. The pump is arranged between and interconnects a rear engine core exhaust nozzle of the engine core and the condensing chamber.

Abstract: A cleaning system for cleaning gas paths in an engine core of a gas turbine engine is provided. The cleaning system includes a source of an engine cleaning liquid; an engine cleaning mist forming unit that vapourises the engine cleaning liquid to form an engine cleaning mist and delivers the engine cleaning mist into the engine core of the gas turbine engine; at least one delivery device configured to deliver the engine cleaning liquid to the engine cleaning mist forming unit; a pump configured to draw the engine cleaning mist through the engine core to clean the gas paths within the engine core; and a mist collecting arrangement including a condensing chamber. The mist collecting arrangement is configured to collect the engine cleaning mist that has passed through the engine core and condense the collected engine cleaning mist in the condensing chamber.

Abstract: A washing tool for washing the engine core of a gas turbine engine has: a fluid connector, configured to be connected to a supply of engine washing fluid; a nozzle, in fluid communication with the fluid connector and configured to direct the engine washing fluid into the engine core; a fan blade fixture, configured to engage with a fan blade of the gas turbine engine and fix the position of the washing tool relative to the fan blade; and a second fixture, configured to engage with a part of the gas turbine engine that does not rotate about the axis of the gas turbine engine and fix the position of the washing tool relative to said part of the gas turbine engine. A washing system, a waste water collection system, a method of washing an engine core of a gas turbine engine, and a gas turbine engine, are also described.

Abstract: A cleaning system for cleaning gas paths in an engine core of a gas turbine engine is provided. The cleaning system includes a source of an engine cleaning liquid; an engine cleaning mist forming unit that vapourises the engine cleaning liquid to form an engine cleaning mist and delivers the engine cleaning mist into the engine core of the gas turbine engine; at least one delivery device configured to deliver the engine cleaning liquid to the engine cleaning mist forming unit; a pump configured to draw the engine cleaning mist through the engine core to clean the gas paths within the engine core; and a mist collecting arrangement including a condensing chamber. The mist collecting arrangement is configured to collect the engine cleaning mist that has passed through the engine core and condense the collected engine cleaning mist in the condensing chamber.

Abstract: A washing tool for washing the engine core of a gas turbine engine. The washing tool has: a fluid connector, configured to be connected to a supply of engine washing fluid; at least one nozzle, in fluid communication with the fluid connector and configured to direct the engine washing fluid into the engine core of the gas turbine engine; a fan blade fixture, configured to engage with a fan blade of the gas turbine engine and fix the position of the washing tool relative to the fan blade; and a second fixture, configured to engage with a part of the gas turbine engine that does not rotate about the axis of the gas turbine engine and fix the position of the washing tool relative to said part of the gas turbine engine. A washing system, a waste water collection system, a method of washing an engine core of a gas turbine engine, and a gas turbine engine, are also described.