METHOD OF CONTROLLING JET TURBOJET ENGINE WITH EJECTOR SUPERCHARGING Russian patent published in 2024 - IPC F02K3/02 

FIELD: aircraft engine building.

SUBSTANCE: invention relates to aircraft engine building, in particular to control of turbojet engines with ejector supercharging. Disclosed is a method of controlling a turbojet engine with an ejector supercharging, comprising a gas ejector, a high pressure channel of which is looped through a mixing chamber, a diffuser and a compressor, the low pressure channel on one side is connected to the atmosphere through an inlet device, and on the other side – with the compressor through the mixing chamber and the diffuser, which consists in increasing the air flow rate through the engine due to reducing the air bleed for compressor supercharging. At the same time, according to the method, air bleed for turbine cooling is reduced, besides, an adjustable sonic nozzle is installed at the outlet of the high-pressure channel of the gas ejector; reduction of air bleed for compressor supercharging and turbine cooling is accompanied by a decrease in gas temperature before the turbine. Moreover, the area of the critical section of the engine nozzle is simultaneously changed to values at which the reduced rotor speed remains maximum possible.

EFFECT: reduction of gas temperature in front of the turbine compensates (reduces) increase in resistance on the side of the nozzle assembly caused by increase in gas flow rate.

2 cl, 2 dwg