Ratyns'kyj V. Estimate of marginal gas dynamic stability of aircraft gas turbine engine compressors .at operation

The problems of estimate of marginal gas dynamic stability of aircraft gas turbine engine compressors .by parameters obtained from recorder are elu-cidated in the thesis. The method of evaluation of marginal gas dynamic stabil-ity of compressors based on mathematical model of working process of gas tur-bine engine has been developed. The method's of reconstruction characteristics of compressors and tur-bines under changing their technical state and the method of determination of gas turbine engine air consuption have been development. The experimental studies of developed mathematical models and evaluation of influence of com-pressors and turbines flow duct damages upon gas dynamic stability have been carried out. The main results of dissertation are introduced in monitoring and diag-nostics division, for a testing an engine PS-90А on the test-bed VAT "AVIADVIGATEL" in Perm.