Variable cross-section turbofan exhaust duct with door type thrust reverser for aircraft
US5996937A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable turbofan bypass cowling includes a movable cowling assembly (12) with pivoting door type thrust reversers (20) connected to a fixed upstream cowling structure (11). The movable assembly may be translated between an upstream position whereat an upstream portion of the reverser and cowling assembly (12) is housed inside an enclosure formed by the upstream cowling structure (11) and a downstream position whereat the assembly (12) effects a variation in the exhaust duct (17) cross-section between an inner primary turbojet-engine cowling (15) and a radially inner wall of the assembly (12). The reverser doors (20) in their closed position are integrated into the cowling wall and contain at least part of the exhaust flow. When pivoted to thrust reversed positions following translation of the assembly (12) to a downstream rearward position, thrust reversal is provided in the usual manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.