Wash systems for gas turbine engines

A method for cleaning a gas turbine engine, the method comprising:

• coupling a wash system to at least one inlet of the gas turbine engine;
• supplying a cleaning material to an engine inlet of the gas turbine engine, wherein the cleaning material is at least partially solid and comprises a detergent, and wherein the cleaning material comprises a first plurality of particles and a second plurality of particles different from the first plurality of particles, the first plurality of particles at least partially surrounding the second plurality of particles;
• and
• rotating one or more components of the gas turbine engine such that the cleaning material abrasively cleans and removes foreign material from the one or more components of the gas turbine engine.

A wash assembly comprising:

• a gas turbine engine comprising a compressor section, a combustion section, and a turbine section defining at least in part a core gas flowpath, the gas turbine engine further defining an inlet to the core gas flowpath;
• and
• a wash system comprising;
• a particulate reservoir for storing a cleaning material, wherein the cleaning material is at least partially solid and comprises a detergent, and wherein each particulate of the cleaning material comprises a first plurality of particles and a second plurality of particles different from the first plurality of particles, the first plurality of particles at least partially surrounding the second plurality of particles;
• and
• a supply assembly comprising at least one supply line, the supply assembly in fluid communication with the particulate reservoir, and the inlet of the gas turbine engine for supplying the cleaning material to the inlet of the gas turbine engine.