FIELD: aircraft engineering.
SUBSTANCE: invention is aimed at provision of safety of flight by excluding excess of thermogasodynamic parameters of engine over strength characteristics of engine by operative revealing of spontaneous increase of flow rate of fuel in engine combustion chamber. Proposed method includes measuring of air pressure after compressor 
determining rate of air pressure changing after compressor 
comparing 
with its threshold value 
forming "surge" signal at 
and measuring speed of high-pressure rotor 
comparing speed of high-pressure rotor with threshold value 
and forming "high speed" signal at 
It includes additional measuring of fuel rate 
in engine combustion chamber, comparing value of 
with preset fuel rate value 
and forming "overfuel" signal at 
and in case of appearance of one of signals "surge" or "high speed" and simultaneous "overfuel" signal, signal is formed to cut off fuel delivery into combustion chamber.
EFFECT: provision of safety of flight of aircraft with gas-turbine engine.
1 dwg
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