Tunable resonator
AssigneePratt & Whitney Canada Corp.
InventorsNinad JOSHI, Sid-Ali MESLIOUI
Life of this patent
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Abstract
The gas turbine engine includes a fluid system fluidly connecting at least two components of the gas turbine engine, and a tunable resonator in fluid flow communication with the fluid system. The tunable resonator has a resonating volume that varies as a function of a volume of an inflatable member located inside the tunable resonator. The inflatable member having a means for varying the volume of the inflatable member, to thereby tune the resonating volume to a selected frequency of pressure fluctuations or acoustic waves within the fluid system.
Claims12
A gas turbine engine comprising, in serial flow communication, a compressor, a combustor, and a turbine, the gas turbine engine further having a fluid system fluidly connecting at least two components of the gas turbine engine and including a tunable resonator in fluid flow communication with the fluid system, the tunable resonator defining an axial direction and a radial direction, the tunable resonator having a resonating volume that varies as a function of a volume of an inflatable member located inside the tunable resonator, the inflatable member having a means for varying the volume, the inflatable member thereby tuning the resonating volume to a selected frequency of pressure fluctuations or acoustic waves within the fluid system.
A method for tuning a resonator in a fluid system of a gas turbine engine, the method comprising:
- determining a frequency of pressure fluctuations or acoustic waves occurring in the fluid system;
- determining a required resonating volume of the resonator fluidly connected to the fluid system for damping the pressure fluctuations or acoustic waves;
- and
- changing a resonating volume of the resonator by deforming one or more walls of an inflatable member until the resonating volume corresponds to the required resonating volume.
Dependencies are inferred from the claim text.