Spray nozzle device for delivering a restorative coating through a hole in a case of a turbine engine

An atomizing spray nozzle assembly for applying a coating inside a turbine engine, comprising:

• an atomizing spray nozzle device configured to receive different phases of materials used to form the coating, the atomizing spray nozzle device including a plurality of delivery nozzles shaped to be inserted into the turbine engine, to mix the different phases of the materials into two-phase evaporative droplets, and to direct the two-phase evaporative droplets toward a surface of the turbine engine, the plurality of delivery nozzles having centerlines that extend radially away from a centerline of the atomizing spray nozzle device;
• an equipment controller operably connected to the turbine engine for controlled rotation of the turbine engine;
• and
• a spray controller in communication with the equipment controller, the spray controller configured to commence spraying of the two-phase evaporative droplets after the equipment controller starts rotation of the turbine engine, the spray controller further configured to control a delivery pressure at which the two-phase evaporative droplets exit the atomizing spray nozzle device by controlling:
• at least one of:
• a supply pressure of the materials provided to the atomizing spray nozzle device, a supply pressure of a gas provided to the atomizing spray nozzle device, a flow rate of the materials provided to the atomizing spray nozzle device, a flow rate of the gas provided to the atomizing spray nozzle device, a temporal duration at which the materials is provided to the atomizing spray nozzle device, and a temporal duration at which the gas is provided to the atomizing spray nozzle device, and,
• at least one of:
• a time at which the materials are provided to the atomizing spray nozzle device, and a time at which the gas is provided to the atomizing spray nozzle device.

An atomizing spray nozzle assembly for applying a coating inside a turbine engine, comprising:

• an atomizing spray nozzle device configured to receive different phases of materials used to form the coating, the atomizing spray nozzle device including a plurality of delivery nozzles shaped to be inserted into the turbine engine, the plurality of delivery nozzles having common cross-sections defining centerlines that extend at non-zero angles relative to a centerline of the atomizing spray nozzle device, the atomizing spray nozzle device configured to mix the different phases of the materials into two-phase evaporative droplets and to direct the two-phase evaporative droplets toward a surface of the turbine engine;
• a spray controller configured to control a delivery of the two-phase evaporative droplets through the plurality of delivery nozzles to apply the coating as a uniform coating on one or more surfaces of the turbine engine;
• and
• an equipment controller in communication with the spray controller, the equipment controller configured to start rotation of the turbine engine prior to the spray controller commencing spraying of the two-phase evaporative droplets and further configured maintain rotation of the turbine engine at one hundred revolutions per minute or less during spraying of the two-phase evaporative droplets.