AIRCRAFT GAS TURBINE ENGINE LUBRICATION SYSTEM OPERATION METHOD Russian patent published in 2024 - IPC F02C7/06 

FIELD: aircraft engine building.

SUBSTANCE: invention relates to aircraft engine building and relates to a method of operating an aircraft gas turbine engine (GTE) lubrication system. In the known method of the aircraft gas turbine engine lubrication system operation, including the oil supply to the friction assemblies of the oil cavities of the rotor bearing assemblies and the drive units box through the pressure line by means of the delivery pump and used oil removal from them through pumping line by means of pumping out pumps unit, according to the proposed invention, when the oil supply pressure to the engine drops below the lower limit, oil is supplied from the pumping line to the pressure line by means of the unit of pumping out pumps through an additional line communicating the pumping out and pressure lines.

EFFECT: possibility of duplicating oil supply to the engine when the oil supply pressure by the delivery pump drops below the minimum allowable value due to additional connection to the oil supply of pumping out pumps of the lubrication system, which will lead to increase in the GTE reliability, for example, in case of failure of the delivery pump.

1 cl, 2 dwg