Geared gas turbine engine
US11022044B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 2020 |
| Grant date | Jun 1, 2021 |
| Priority date | — |
| Expiry date | Mar 17, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gas turbine engine including: an engine core including turbine, compressor, and core shaft connecting the turbine to the compressor; a fan; an epicyclic gearbox that: (i) receives input from the core shaft to drive the fan at a lower rotational speed than the core shaft, and (ii) includes a sun gear, ring gear, planet carrier, and planet gears; and a gearbox support. The gearbox has a cross sectional area greater than or equal to 2.4×10−1 m2. A first gearbox support strength ratio of: is greater than or equal to 7.0×10−3; and/or a second gearbox support strength ratio of: is greater than or equal to 1.0×10−1, where the angle (β) is 2π/N, and N is the number of planet gears.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.