METHOD FOR PROTECTING GAS TURBINE ENGINE FROM SURGE Russian patent published in 2023 - IPC F02C9/28 F04D27/02 

FIELD: aircraft engine building.

SUBSTANCE: invention can be used in automatic control systems (ACS) of gas turbine engines (GTE) for various types of aircrafts. The invention can also be applied in automatic control systems of gas turbine units for power plants, superchargers of main gas pipelines, gas turbine power units of sea and river vessels, and other power units with a gas turbine drive. In the method of protecting a gas turbine engine from surge, parameter A is additionally formed, which characterizes the current mode of operation of the GTE, when the fuel supply to the combustion chamber is restored, parameter A is determined, which characterizes the current mode of operation of the GTE, if the current mode of engine operation is lower than the set value of the idle mode, then the fuel consumption Gt in the combustion chamber is increased according to the fuel dosing programs at startup, and then, after the GTE reaches the idle mode, the fuel consumption in the combustion chamber is increased at the acceleration rate to the value preceding the surge moment, and according to the position of the engine control lever.

EFFECT: invention allows, through the integrated use of fuel dosing programs at startup Nin/Rout* = f(Nin_prev), Gt = f(Nin_prev), programs for limiting the temperature of gases T_GPREV= f(Tout*) to ensure reliable, prompt and trouble-free restoration of GTE thrust after the surge has been eliminated, leading to a decrease in the engine operation below idle.

6 cl, 1 dwg