AUTOMATIC MONITORING OF DYMANIC LOADING OF AUGMENTED TURBOFAN ENGINE IN OPERATION USING STANDART VIBRATION MEASUREMENT

B.B. Korivin, A.A. Stasevich, O.N. Bilinkina

The need of automatic monitoring of augmented turbofan engine intershaft bearing vibration loading during its operation on maneuverable aircraft is stated. The technology is based on the broadband signal analysis received from the standard flexural ceramics vibration sensor installed on the engine intermediate casing. The algorithm consists of allocation of specters diagnostic component of the intershaft bearing separator rotating frequency and evaluation of its operation time on different engines modes. The appearance of diagnostic component and its progressive operation time on the idle for the technological engine with defective bearing are the reasons for earlier check of intershaft bearibg state. The real-time application of algorithm is viewed.

Key words: intershaft bearing, diagnostic sign, specters component, separator, harmonic, monitoring, real-time.