Noise-suppressed exhaust nozzles for jet engines
US5261229A · kind A · utility
11Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1992 |
| Grant date | Nov 16, 1993 |
| Priority date | — |
| Expiry date | Aug 3, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02K1/386
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An array of chutes is permanently mounted within the flowpath of an exhaust nozzle of an aircraft jet engine for entraining and mixing ambient air with the exhaust gas so as to reduce the noise level of aircraft, particularly during take-off. In order to provide good engine performance during all modes of jet engine operation, a convergent-divergent flap assembly is arranged downstream from the chutes for controlling the nozzle throat and exit areas when the chutes are closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.