Acoustic attenuation panel for an aircraft propulsion unit and propulsion unit including such a panel
US11220346B2 · kind B2 · utility
0Cited by
8References
11Claims
0Family size
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Key dates
| Filing date | Jan 29, 2019 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | May 14, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An acoustic attenuation panel for a propulsion unit including a nacelle and a turbojet engine includes a cellular core disposed between an inner skin and an outer skin, called acoustic skin, the acoustic skin including a plurality of acoustic apertures, the acoustic apertures being inclined, at a non-zero inclination angle (β) relative to the direction normal to the acoustic skin, upstream with respect to the flow direction of the air or gas flow to which the panel is intended to be subjected under normal operating conditions, that is to say upstream of the propulsion unit when the panel is mounted in such a unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.