System for washing an aero gas turbine engine

A liquid wash system comprising:

• a mobile unit;
• a wash unit associated with the mobile unit for providing wash liquid;
• one or more nozzles for streamline injecting wash liquid provided by the wash unit directly into an engine inlet without contact between the wash unit and the engine inlet cowling during a washing process;
• and
• a liquid collector unit separate from the wash unit and not connected to the engine for collecting used washing liquid that is entrained in an airstream and emanating from the gas turbine engine as a result of a washing procedure.

A closed loop system for washing engines and collecting and treating waste liquid from the engine washing comprising:

• a washing unit for providing a washing liquid into an engine;
• a collector unit for collecting used washing liquid entrained in an airstream that emanates horizontally from the engine as a result of a washing procedure;
• a treatment unit for treating the used washing liquid collected by the collector unit;
• a transport unit for carrying treated washing liquid from the treatment unit to the washing unit to be reused for washing engines;
• and
• a positioning device adapted to locate said washing unit, thereby enabling a positioning of said washing unit in a washing operation position relative to an engine inlet without contact between the washing unit and the engine inlet cowling during a washing operation, wherein the washing unit, the collector unit, the treatment unit, the transport unit and the positioning device do not come into contact with the aircraft during a washing operation.

A mobile washing system for washing a gas turbine engine of an aircraft having an engine shaft and an inlet cowling, the washing system comprising:

• a spray device including
• a central axis,
• a central body, and
• at least one manifold arranged relative to the central body and having at least one nozzle adapted to streamline inject washing liquid directly into an inlet of said gas turbine engine during a washing operation, wherein the spray device is sized to be smaller than the opening of the inlet of the gas turbine engine;
• a wash unit adapted to distribute said liquid to said spray device;
• a positioning device adapted to locate said spray device, thereby enabling a positioning of said spray device in a washing operation position relative to said inlet, wherein when the spray device is in the washing operation position, the central axis is substantially aligned with the engine shaft and there is no contact between the manifold and the inlet cowling;
• and
• a liquid collector unit for collecting used washing liquid that is entrained in an airstream and emanating from the gas turbine engine as a result of a washing procedure;
• and
• a liquid treatment unit for treating the used washing liquid providing by the used liquid collector.