Architecture for an acoustic liner
AssigneeUnited Technologies Corporation
InventorsWilliam Proscia, Christopher D. Jones
Life of this patent
Estimating the term…
Abstract
An acoustic liner 20 includes a remote panel 26, a perforated proximate panel 22 transversely spaced from the remote panel and one or more partitions 32 spanning across the space between the panels. At least one baffle 44 cooperates with the partitions to define a resonator chamber 34b and an associated neck 56 for establishing communication between the resonator chamber and a fluid stream G flowing past the proximate panel.
Claims26
An acoustic liner for attenuating noise in a substantially longitudinally flowing fluid stream, comprising:
- a remote panel;
- a perforated proximate panel transversely spaced from the remote panel;
- one or more partitions spanning across a space between the remote and perforated proximate panels and contacting the remote and perforated proximate panels to define at least one inter-panel compartment;
- and
- at least one baffle cooperating with the one or more partitions to define at least one resonator chamber and an associated neck for establishing communication between the at least one resonator chamber and a fluid stream.
An acoustic liner for attenuating noise in a substantially longitudinally flowing fluid stream, comprising:
- a remote panel;
- a perforated proximate panel transversely spaced from the remote panel;
- one or more partitions spanning across a space between the remote and perforated proximate panels and cooperating with the remote and perforated proximate panels to define at least one inter-panel compartment:
- at least one baffle cooperating with the one or more partitions to define at least one resonator chamber and an associated neck for establishing communication between the at least one resonator chamber and a fluid stream;
- and
- wherein perforations penetrate the perforated proximate panel in registration with the at least one resonator chamber and the liner comprises a bypass cooling system for conveying bypass coolant to the perforations without guiding the bypass coolant through the at least one resonator chamber;
- and
- wherein the at least one baffle includes a base transversely recessed from the perforated proximate panel to define a coolant plenum, and wherein a bypass coolant passage is defined at least in part by a passage wall and a cooperating partition;
- and
- wherein the bypass coolant passage includes a coolant intake comprising an opening in the remote panel and also includes a coolant outlet for discharging coolant into the coolant plenum.
Dependencies are inferred from the claim text.