Equipment cleaning system and method

A method comprising:

• placing an engine assembly of an aircraft into a flexible and multi-sided tank enclosure that wraps around the engine assembly;
• cleaning the engine assembly in the flexible and multi-sided tank enclosure while the engine assembly is mechanically coupled to a larger system,
• placing the engine assembly into contact with a fluid detergent in the flexible and multi-sided tank enclosure, wherein a pH value of fluid detergent is less than 5, wherein the fluid detergent includes citric acid and glycolic acid;
• placing a shielding and damping device into contact with the engine assembly;
• and
• subsequently removing one or more deposits on the engine assembly by exposing the engine assembly to ultrasound waves having a frequency greater than 40 kHz while the engine assembly is in contact with the fluid detergent wherein the shielding and damping device prevents damage to the engine assembly by the ultrasound waves.

A method comprising:

• placing an aircraft engine assembly into a multi-sided, flexible tank enclosure that wraps around the aircraft engine assembly;
• immersing the aircraft engine assembly into a fluid detergent in the flexible and multi-sided tank enclosure while the aircraft engine assembly remains mechanically coupled to a larger system, the fluid detergent including a reagent composition that selectively dissolves constituents of foreign material forming deposits on the aircraft engine assembly while physically removing silicate material in the deposits, wherein the fluid detergent includes citric acid and glycolic acid;
• placing a shielding and damping device into contact with the engine assembly;
• and
• subsequently removing the deposits on the aircraft engine assembly by exposing the aircraft engine assembly to ultrasound waves having a frequency greater than 40 kHz while the aircraft engine assembly is in contact with the fluid detergent, wherein the shielding and damping device prevents damage to the aircraft assembly by the ultrasound waves.