Variable section nozzle for a turbo-jet engine and an aircraft comprising such equipment

US4577814A · kind A · utility

Assignee

• Societe Nationale d'Etude et de Construction de Moteurs d'Aviation - S.N.E.C.M.A · FR

Inventors

• Gerard J. P. Bayle-Laboure · Paris, FR
• Jean G. Bouiller · Brunoy, FR
• Marc F. B. Buisson · Le Mée-sur-Seine, FR
• Marcel R. Soligny · Chevilly-Larue, FR

Key dates

• Filing date: Nov 22, 1983
• Grant date: Mar 25, 1986
• Expiry date: Nov 22, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/60
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a variable area nozzle for a turbo-jet engine. This nozzle comprises a convergent portion, formed by a fixed semi-shell (2) and a semi-shell (3) pivotal about a diametral axis (4a-4b); the fluid-tightness of the convergent portion is ensured by a substantially semi-circular seal (6) and by two longitudinal seals (7a, 7b). The nozzle can be used for example with an engine comprising a partial re-heat system of moderate output.