Cowling arrangement for a turbofan engine
US3988889A · kind A · utility
245Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1974 |
| Grant date | Nov 2, 1976 |
| Priority date | — |
| Expiry date | Feb 25, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cowling arrangement is provided for a turbofan engine of the variable pitch fan blade type wherein the aft portion of the fan cowling has the ability both to slide axially with respect to the main forward portion, providing an annular intake to increase reverse airflow during reverse pitch fan operation, and to vary radially so as to adjust exit area during normal operation at forward pitch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.