METHOD OF FLIGHT DIAGNOSTICS OF UNITS OF TURBOFAN ENGINE WITH FLOW MIXING

摘要

FIELD: test technology.;SUBSTANCE: invention relates to method for flight diagnostics of turbofan engine (TFE) units with flow mixing. For diagnostics of the units, the operating parameters of the engine are measured in a certain way on the stationary flight mode of the engine, parameters of the environment are measured, the air flow at the inlet is calculated, the values of the engine thrust are determined, calculate the values of the relative deviation of the engine thrust from the reference value in the five selected stationary flight modes, calculate the relative decrease in the efficiency coefficients of the compressors and turbines, as well as the coefficient of completeness of combustion of fuel in the combustion chamber, evaluate the technical condition of compressors, turbines and combustion chambers, form a warning signal in case of unacceptable technical condition of at least one of the nodes.;EFFECT: reliability of flight diagnostics of technical condition of TFE is improved.;1 cl, 1 dwg