Counterrotating turbofan engine
US7594388B2 · kind B2 · utility
29Cited by
32References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2005 |
| Grant date | Sep 29, 2009 |
| Priority date | — |
| Expiry date | Dec 10, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A turbofan engine includes a fan, compressor, combustor, high pressure turbine, and low pressure turbine joined in serial flow communication. The high pressure turbine includes two stages of rotor blades to effect corresponding exit swirl in the combustion gases discharged therefrom. A transition duct includes fairings extending between platforms for channeling the combustion gases to the low pressure turbine with corresponding swirl. First stage rotor blades in the low pressure turbine are oriented oppositely to the rotor blades in the high pressure turbine for counterrotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.