METHOD FOR OPERATION OF AIRCRAFT GAS TURBINE ENGINE ACCORDING TO ITS TECHNICAL CONDITION Russian patent published in 2021 - IPC G01M15/14 

FIELD: gas-turbine engine diagnostics.

SUBSTANCE: invention relates to the technique of diagnosing the technical condition of aircraft gas turbine engines, taking into account specific operating conditions. The method for operation of an aircraft gas turbine engine according to its technical condition consists in comparing the actual operating time of the engine and the accumulated damage to the main engine parts in static operating modes with their maximum permissible values determined by the results of resource tests on a ground stand, and then determining the remaining resource of the engine and its main parts based on the results of this comparison. The accumulated damage to the main parts of the engine is defined as the sum of the products of the number of typical loading cycles allocated during the flight, determined by the ranges of changes in the cyclic loading of the main parts of the engine, in turn, determined by the characteristic parameters of the engine operation per corresponding single damage. In addition, in dynamic and transient operating modes, the speed of movement of the engine control lever, the physical rotation speeds of the rotors of low-and high-pressure compressors, the gas temperature behind the low-pressure turbine, the engine operating time in each mode and the transition time from one mode to another are measured, after which the accumulated damage to the main engine parts is determined.

EFFECT: invention makes it possible to increase the accuracy of calculating the time of damage to engine parts and components during bench life tests.

1 cl, 3 dwg, 1 tbl