Gas turbine engine with acoustic spacing of the fan blades and outlet guide vanes
US12428962B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2025 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Apr 11, 2045 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/96
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A gas turbine engine comprises a fan, a core turbine engine coupled to the fan, a fan case housing the fan and the core turbine engine, a plurality of outlet guide vanes extending between the core turbine engine and the fan case, and an acoustic spacing. The fan comprises a plurality of fan blades that define a fan diameter and a BEAL. The fan case comprises an inlet and an inlet length between the inlet and the fan. The acoustic spacing comprises a distance between the fan and the plurality of outlet guide vanes, and in combination with the BEAL determines an acoustic spacing ratio of the gas turbine engine. The combination of acoustic spacing and corrected specific thrust provide enhanced propulsive efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.