Method and apparatus for boosting ram airflow to an ejection nozzle
US5435127A · kind A · utility
44Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1993 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Nov 15, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/601
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An ejecting exhaust nozzle in a gas turbine engine includes a convergent section, a divergent section, extending downstream from the convergent section, and an ejector for ejecting an airflow into the core airflow is fed by a boost pump. The boost pump includes a flow mixer with a boost plane wherein a fan airflow is injected into a ram airflow and then mixed in a mixing section extending downstream from the boost plane. Varying the fan airflow to boost the ram airflow to control a boosted ram airflow pressure allows ejector operation throughout the flight envelope of the gas turbine engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.