TUYERE VARIABLE SEMI FLUIDIQUE

A nacelle (1) comprising an exhaust nozzle (5) comprising at least one flap (8) pivoting between a retracted position and a deployed position, characterised in that the flap (8) is arranged downstream from an injection zone (9) where a control jet (22) is injected into a secondary vein (7) of the na...

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Bibliographische Detailangaben
Hauptverfasser: GONIDEC PATRICK, CHAPELAIN LOIC
Format: Patent
Sprache:fre
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Beschreibung
Zusammenfassung:A nacelle (1) comprising an exhaust nozzle (5) comprising at least one flap (8) pivoting between a retracted position and a deployed position, characterised in that the flap (8) is arranged downstream from an injection zone (9) where a control jet (22) is injected into a secondary vein (7) of the nacelle (1). In the retracted position, the flap (8) is arranged in aerodynamic continuity with the secondary vein (7) of the nacelle (1) and a substantially planar leading edge (10) of the flap (8) is arranged facing a wall (11) that is substantially parallel to and spaced apart from the leading edge (10), the wall (11) has a control port (12) through which the control jet (22) flows. In the deployed position, the leading edge (10) of the flap (8) is arranged in the secondary vein (7) and forms a step in the secondary vein (7) that disturbs the flow of the secondary flow (6) and a portion of the control jet (22) is injected into the secondary flow (6), flowing along the step created in this way in order to produce a recirculation bubble (23) in the secondary vein (7) against the flap (8).