Ducted fan of an aircraft, aircraft, and component thereof
US12180913B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 14, 2021 |
| Grant date | Dec 31, 2024 |
| Priority date | — |
| Expiry date | Dec 14, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/962
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A ducted fan of an aircraft includes a rotor-side fan and a stator-side duct that surrounds the rotor-side fan radially at the outside and defines a flow channel for air flowing via the fan. The stator-side duct has an inner wall that faces toward the rotor-side fan and which is perforated at least in certain sections. The stator-side duct has an outer wall that faces away from the fan. Between the inner wall and the outer wall of the stator-side duct, there are formed cavities which, forming sound-deadening resonators, are coupled via the perforated inner wall to the flow channel for the air flowing via the rotor-side fan. The cavities are filled, in a region which faces away from the inner wall and thus faces toward the outer wall, with activated carbon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.