Diagnostic of the gas turbine engine flow area by thermodynamic parameters

Abstract

Technical diagnostics of complex objects is a direction in science and technology, which is the process of determining the technical state of an object to be diagnosed with a certain accuracy. The technical condition is understood as a set of properties of an object subject to change in the course of production or operation, characterized at a certain point in time by the features established by the technical documentation for this object. The totality of technical conditions, satisfying or not satisfying the requirements that determine the serviceability, operability or correct functioning of the object, forms the corresponding types of the technical state of the object. Determination of the type of technical condition is possible if the technical condition, determined by diagnostics, and the requirements that determine the serviceability, operability and correct functioning of the object, are known, - specified, for example, in the form of a specification in the technical documentation of the nomenclature and permissible values of quantitative and qualitative characteristics of properties object. An aircraft gas turbine engine (GTE) is practically a complex technical object (hybrid object). Checking the serviceability, operability and correct functioning of the aviation GTE is necessary during the operation of the latter to ensure flight safety. Rapid troubleshooting of complex engine systems is also required to reduce aircraft downtime, thereby increasing aircraft economy. The main goal of technical diagnostics of an aviation GTE is the effective organization of processes for assessing its technical condition, which is based on the main provisions of the general theory of technical diagnostics, methods for constructing and analyzing mathematical models of diagnosed objects, and methods for constructing diagnostic algorithms.