METHOD FOR REDUCING VIBRATION IN ROTATING BLADES OF TURBO-MACHINE Russian patent published in 2016 - IPC F01D5/26 

Abstract RU 2598985 C2

FIELD: aviation.

SUBSTANCE: invention relates to methods for reducing vibration and can be used in the field of aircraft, marine and ground-based gas turbine engine construction during engine bench tests and during their operation. Method for reducing vibration in rotating blades of a turbo-machine, which includes measuring gas temperature before or behind the turbine, consists of detecting resonance harmonic using the analysis of temperature field width and reducing its amplitude, for this purpose the temperature field is corrected by varying the supply of fuel into the combustion chamber nozzles, unlike the existing method the change of fuel feed is performed by stopping the feed into at least one nozzle at resonance mode, after passing through resonance mode fuel feed is restored.

EFFECT: technical result is increased service life and reliability of turbo-machine during its operation due to reduced vibration in its working blades.

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RU 2 598 985 C2

Authors

Mikhajlov Aleksandr Leonidovich

Chernykh Vyacheslav Ivanovich

Dates

2016-10-10Published

2014-12-11Filed