Acoustic panel for sound insulating linings of gas ducts
US4858721A · kind A · utility
23Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Apr 4, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02K1/827
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A sound insulating lining for a gas flow path, particularly the bypass flow ath in a jet engine, is made up of a succession of acoustic panels including a perforated skin bonded to a stiffening frame, and a cellular structure formed by a ribbed skin clamped with prestressing via of resilient tongues to transverse struts of the stiffening frame so that the ribs engage the perforated skin to form resonant acoustic cavities. The panels forming the lining are screwed to the casing constituting the wall of the flow path to be insulated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.