Sound wave guide for use in acoustic structures

Patent metadata

Field	Value
Publication number	US-8997923-B2
Application number	US-201313964629-A
Country	US
Kind code	B2
Filing date	Aug 12, 2013
Priority date	Aug 12, 2013
Publication date	Apr 7, 2015
Grant date	Apr 7, 2015

Abstract

The bandwidth or acoustical range of an acoustic structure is increased by locating a sound wave guide within the acoustic cell. The wave guide divides the cell into two acoustical chambers. The two chambers provide an effective increase in resonator length of the cell.

First claim

What is claimed is:

1. An acoustic structure for reducing noise generated from a source, said acoustic structure comprising:
a honeycomb comprising a first edge to be located closest to said source and a second edge, said honeycomb comprising a plurality of walls that extend between said first and second edges, said walls defining a plurality of cells wherein each of said cells has a cross-sectional area measured perpendicular to said walls;
an acoustic barrier located at the se…

Assignees

• Hexcel Corp

Inventors

• Ichihashi Fumitaka

Classifications

• G10K11/172 Primary

  Physics · mapped topic

• Y02T50/60

  Cross-Sectional Technologies · mapped topic

• B32B3/10 Primary

  Operations & Transport · mapped topic

• F02C7/045

  Mechanical Engineering · mapped topic

• Y10T29/4957

  Cross-Sectional Technologies · mapped topic