METHOD OF PROTECTING GAS TURBINE ENGINE AGAINST SPINNING OF ROTORS IN CASE OF FIRE Russian patent published in 2024 - IPC F04D27/02 

FIELD: engine building.

SUBSTANCE: invention relates to aircraft gas turbine engine building, in particular to aircraft engine automatic control systems using digital controller with full responsibility. Self-contained engine protection unit is placed in the non-fire hazardous zone of the engine, which is separated from the fire hazard zone by a fire partition that provides the necessary fire safety requirements; in addition, electric communication lines of autonomous protection unit, engine rotor speed sensors, solenoid valve for cutting off the fuel supply to the engine and electrical communication lines to the sensors and to the solenoid valve for cutting off the fuel supply are made in a fire-resistant design and are galvanically isolated from the electronic engine controller and the ACS elements interacting with the controller, also electric power supply of self-contained unit of protection is carried out via communication lines, independent from power lines of electronic regulator; in addition, the control ACS includes at least one temperature sensor, by means of which the thermal state of the electronic controller is determined, in case preset conditions of thermal state of electronic controller are exceeded, at least one information warning signal is generated to cockpit.

EFFECT: elimination of dangerous consequences for the engine at spinning of its rotors in case of failure of electronic regulator under fire conditions, which will allow to ensure reliable operation of ACS of gas turbine engine in case of fire.

5 cl, 2 dwg