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US 2025/0027428 A1Published application
Method of mitigating vibrations in a seal component
AssigneePratt & Whitney Canada Corp.
InventorIgnatius THERATIL
Life of this patent
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Abstract
A method of mitigating vibrations of a seal component of a bearing cavity, the method includes: injecting gas jets into the bearing cavity to disrupt vortices causing the vibrations of the seal component, the vortices having a frequency and an amplitude, the gas jets one or more of: decreasing the amplitude of the vortices; and modifying the frequency of the vortices to be offset from a natural frequency of the seal component.
Claims20
A method of mitigating vibrations of a seal component of a bearing cavity, the method comprising:
- injecting gas jets into the bearing cavity to disrupt vortices causing the vibrations of the seal component, the vortices having a frequency and an amplitude, the gas jets one or more of:
- decreasing the amplitude of the vortices;
- and
- modifying the frequency of the vortices to be offset from a natural frequency of the seal component.
1 more element
An aircraft engine, comprising:
- a shaft rotatable about a central axis;
- a bearing housing extending around the shaft and defining a bearing cavity;
- a seal disposed radially between the shaft and the bearing housing, the seal having a static component mounted to the bearing housing and a rotating component mounted to the shaft, a gap defined between the rotating component and the static component, the gap fluidly connecting the bearing cavity to an environment outside the bearing cavity;
- a gas source at a pressure greater than a pressure inside the bearing cavity;
- and
- nozzles distributed circumferentially around the central axis and fluidly connecting the gas source to the bearing cavity proximate the seal, the nozzles injecting jets of a gas from the gas source into the bearing cavity.
3 more elements
Dependencies are inferred from the claim text.