Title:
Sound structure which increased bandwidth oppression
Document Type and Number:
Japanese Patent JP6200945
Kind Code:
B2
Abstract:
The bandwidth or acoustical range of a nacelle or other type of acoustic structure is increased by acoustically coupling honeycomb cells together to form pairs of acoustic cells that have an effective acoustic or resonator length that is up to twice that of either acoustic cell taken alone.
Inventors:
Isle, Earl
Application Number:
JP2015511554A
Publication Date:
September 20, 2017
Filing Date:
May 03, 2013
Export Citation:
Assignee:
Hexel Corporation
International Classes:
G10K11/16; B64C1/40; B64D33/00
Domestic Patent References:
| JP2008537604A | ||||
| JP10115253A | ||||
| JP3501591A |
Foreign References:
| WO2011034469A1 | ||||
| US4001473 |
Attorney, Agent or Firm:
Asamura patent office