METHOD FOR STARTING THE COMBUSTION CHAMBER OF A GAS TURBINE ENGINE Russian patent published in 2022 - IPC F02C9/28 F02C9/26 F02C9/00 

FIELD: aircraft engine building.

SUBSTANCE: invention relates to the field of aircraft engine building. The method for starting the combustion chamber (CC) of a gas turbine engine (GTE) consists in measuring the frequency n of rotation of the engine rotor and the temperature Tt of the gases downstream of the GTE turbine by means of a thermocouple, calculating the first derivative Tt' with respect to time of the gas temperature behind the turbine, and generating the gas temperature signal Tt_cor downstream of the turbine in accordance with a given ratio, a given fuel flow rate Gt_set in the CC GTE is formed depending on the rotor speed, the fuel consumption Gt_set for starting the CC GTE is set equal to Gt_set. Upon receipt of the command to start the CC, the value of the signal Tt_cor is fixed, the ignition unit (IU) of the CC is turned on and the fuel consumption for starting is supplied to the CC GTE, a signal is generated for the successful launch of the CS when the current value of Tt_cor exceeds the fixed value by a predetermined value ΔTt_cor. If the signal for a successful launch of the CC is generated, the IU is turned off, and the specified fuel consumption Gt_set is supplied to the CC GTE, and if the signal for a successful launch of the CC was not generated within a predetermined allowable time τ_set from the moment the command to start the CS was received, the CC is turned off and the supply is stopped fuel in the CC GTE.

EFFECT: improving the safety of operation of a gas turbine engine running on gaseous fuel by reducing the detection time of a successful or unsuccessful start of the combustion chamber of a gas turbine engine.

7 cl, 4 dwg