Hollow fan blade for gas turbine engine
US6994524B2 · kind B2 · utility
52Cited by
6References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2004 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Apr 4, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves. Each detail half has a plurality of cavities and ribs machined out to reduce weight. These detail halves are subsequently bonded and given an airfoil shape in the forming operation. In the present invention, the ribs are oriented biased to provide stiffness as needed in different sections of the fan blade with smooth transitions between regions. The result is a blade with good protection from a wide spectrum of external threats.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.