Geared turbofan engine gearbox arrangement
US8869504B1 · kind B1 · utility
44Cited by
8References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2013 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Nov 22, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A three-spool turbofan engine (20) has a variable fan nozzle (35). The fan blades have a peak tip radius RT and an inboard leading edge radius RH at an inboard boundary of the flowpath. A ratio of RH to RT is less than about 0.40.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.