Shevchenko M. Estimation of non-measured integral parameters of aircraft gas turbine engine

Object - operating processes in aircraft gas turbine engines; goal - ensuring monitoring of the aircraft gas turbine engine technical state using integral immeasurable operating parameters, such as thrust and specific fuel consumption and their estimation based on the information received under operating conditions; methods - mathematical modeling of processes that occur in gas turbine engines; simulation; statistical analysis of the data; experimental study of the parameters of the gas turbine engine operating process; results - ensuring monitoring of the technical state of aircraft gas turbine engine by the integral immeasurable operating parameters, such as thrust and specific fuel consumption; novelty - a new method for estimate the unmeasured parameters of the gas turbine engine using a lack of measuring system information taking into account changes in the technical condition of the engine, which is different from the previous by formulation of the incorrect inverse measuring problem and its regularization using principal component analysis, and allows one to define parameters with high accuracy and negligible computational cost, for the proposed method the influence patterns of the structure of measuring system and performances of gas turbine engine components that were used in the analysis on the accuracy of estimation of unmeasured engine parameters were defined for the first time, for the proposed method a method to optimize the measuring system structure and the performances structure that were used in determining of the gas turbine engine unmeasured integral parameters using a genetic algorithm to search and allows to reach the minimum assessment error was carried out for the first time; degree of integration - two adoption deeds are presented; industry - propulsion engineering.