Hollow fan blade for gas turbine engine
US6994525B2 · kind B2 · utility
13Cited by
6References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2004 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Apr 9, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49339
- 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 one embodiment, contiguous cavities are formed around freestanding ends of the ribs to reduce the number of cavities required. The freestanding end of each rib is flared such that it has a larger width than the rest of the rib. The cavity extends continuously around the free, flared end of the rib.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.