Abstract:
A method for in-situ cleaning of compressor blades in a gas turbine engine on an aircraft comprises the following sequential steps: Step 1—washing said compressor blades by spraying a first liquid composition into the engine; and Step 2—finally rinsing said washed compressor blades by spraying a second liquid composition into the engine, wherein the second liquid composition, has a freezing point of −10° C. or below and is non-aqueous and hydrophilic.
Abstract:
One or more stable, clear, water-in-fuel microemulsion-forming surfactants may be used in a liquid fuel or oil which is immiscible with water to: a) scavenge free-water which exists in or is introduced into the liquid fuel or oil thereby to render or retain the liquid fuel or oil in a usable state; and/or b) inhibit the growth of aquatic micro-organisms in the liquid fuel or oil when the fuel or oil becomes contaminated with free-water thereby to retain the liquid fuel or oil in a usable state.