METHOD AND DEVICE FOR NOTIFYING PERMISSION TO COMPLETELY SHUT OFF AIRCRAFT GAS TURBINE ENGINE Russian patent published in 2019 - IPC F01D21/00 F02C9/00 

FIELD: machine building.

SUBSTANCE: invention relates to a method of notifying permission to completely disconnect an aircraft gas turbine engine. So, the method is applied after detection (E10), that the engine has passed to idling speed, and contains: a) evaluation step (E20) to use the value of the first operating parameter of the engine in order to estimate the value for the second parameter T45MG, which characterizes thermal behaviour of the engine part, which can be subjected to coking; b) comparing step (E30) to compare the second parameter value T45MG with the predetermined threshold value T45thresh corresponding to the second parameter value, which does not lead to coking of said part; and c) notification stage (E50) for notification of permission to shut off the engine completely if the value of the second parameter T45MG is lower than the value of the predetermined threshold value T45trhesh, otherwise the repetition of steps a)-c). Invention also relates to devices for implementation of such method, namely: to a computer-readable data medium storing a computer program, which includes instructions for executing steps of the permission notification method of completely shutting down the aircraft gas turbine engine, and to a gas turbine engine of the aircraft.

EFFECT: invention discloses a method and a device for notifying permission to completely shut off an aircraft gas turbine engine.

8 cl, 2 dwg