Patent ID: 7178338
Filing Date: 2007-02-20
Classification: F02K

Abstract:
1. An exhaust nozzle assembly for a gas turbine engine, the assembly comprising a main axis, an inner nozzle, an outer nozzle, a translatable centre-body and a means for translating the centre-body between a forward position and a rearward position; the centre-body being disposed radially inwardly of the inner nozzle thereby partly defining an inner duct for a core engine gas flow, an outer duct for a bypass gas flow is defined by the inner nozzle and the outer nozzle, the outer nozzle extends downstream of the inner nozzle and with the centre-body defines a final mixing duct having a final exhaust exit area; wherein in the forward position the centre-body defines the final exhaust exit area at a maximum area; in a rearward position the centre-body defines the final exhaust exit area at a minimum area and the centre-body and the outer nozzle each define, in axial flow series, a convergent portion and a divergent portion.