Noise reduction apparatus, aircraft, and noise reduction method
US11577823B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Jan 23, 2019 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Apr 17, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/8616
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A noise reduction apparatus, an aircraft, and a noise reduction method capable of increasing the amount of noise reduction are provided. The noise reduction apparatus 1 includes a porous plate 2 disposed to face a fluid flow, the porous plate 2 including a bend region 5 bent toward an upstream side of the fluid flow. The bend region 5 is provided at the end portion 6 of the porous plate 2, and has a concave R-shape on an upstream side of the fluid flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.