Patent ID: 9234462
Filing Date: 2016-01-12
CPC Classification: F01D,F02C,F05D,F16C,F16F

Claim Text:
1. A fluidic dampening film supply method for a guiding bearing of a turbine engine shaft, said turbine engine being known to vibrate according to at least one given vibratory mode, said turbine engine being adapted to enter in resonance at a given resonance speed for said given vibratory mode, and a monitoring range being defined around the resonance speed, the method comprising: not providing a fluid supply of the fluidic dampening film for the guiding bearing; measuring an amplitude of vibrations in the turbine engine using at least one vibration sensor; comparing the measured amplitude to a first predetermined threshold; supplying the fluidic dampening film of the guiding bearing when the measured amplitude is greater than the first predetermined threshold; comparing the measured amplitude to a second predetermined threshold; and stopping the fluid supply of the fluidic dampening film of the guiding bearing if the measured amplitude is lower than the second predetermined threshold, wherein the fluidic dampening film is supplied when a rotational speed of the turbine engine shaft is within the monitoring range, and the fluidic dampening film is not supplied when the rotational speed of the turbine engine shaft is outside of the monitoring range.