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2 258 923

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IPC

(21) (22)

Application

2004101365/28, 2004-01-21

(24)

Start date

2004-01-21

(22)

Actual filing date

2004-01-21

(45)

Published

2005-08-20

(72)

Inventor

Vatazhin A.B.Golentsov D.A.Bozhkov A.I.Likhter V.A.

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Institut Aviatsionnogo Motorostroenija Im. P.I. Baranova"

METHOD OF DIAGNOSING GAS TURBINE ENGINES AT STEADY AND NON-STEADY STATES OF OPERATION Russian patent published in 2005 - IPC

Abstract RU 2258923 C1

FIELD: measurement engineering.

SUBSTANCE: method can be used for diagnosing technical condition of gas turbine engine during production, test and exploitation. Electro-static aerial is mounted behind cut of nozzle outside engine and its reactive gas-dynamic jet for registering pulsation of electric field generated by charged particles (electrons, ions, microscopic particles) which attend in moving jet. Dispersion σ_j is calculated from set of N points of registered signal during period of inspection in preset time period within preset time interval. Characteristic frequencies are determined in spectrum of registered signal and calculated dispersion of σ_j is compared with preset and determined in advance, reference value of σ^*. If σ_j exceeds the bounds of preset range and there are frequencies in spectrum range being different reference ones, the failure is supposed to take place.

EFFECT: increased efficiency of diagnostics; reduced time for diagnostics.

3 dwg

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RU 2 258 923 C1

Authors

Vatazhin A.B.

Golentsov D.A.

Bozhkov A.I.

Likhter V.A.

Dates

2005-08-20—Published

2004-01-21—Filed