OIL-SYSTEM OF THE GAS TURBINE ENGINE OF THE MANEUVERED AIRCRAFT Russian patent published in 2018 - IPC F02C7/06 

FIELD: engines and pumps.

SUBSTANCE: overflow valve is set behind the fuel-oil heat exchanger, and the overflow valve with internal piping products reported circulation compartment so that the outlet pipe is located at the top the recirculation cavity and down toward the septum, which separates the bays of each other.

EFFECT: duration of the figured flights of the aircraft is prolonged, the reliability of the oil system is increased due to the bypass of the cooled oil in the tank, and the stable supply of oil to the entrance to the engine when the aircraft is flipped.

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