Vectoring nozzle using injected high pressure air

An exhaust nozzle for a gas turbine engine, said engine having an exhaust stream passageway and defining flow streams of at least core air and high pressure secondary air which together define parts of an exhaust stream for flow through the exhaust stream passageway, said exhaust nozzle comprising:

• at least one converging portion;
• a first diverging portion pivotally associated with said converging portion and defining therebetween an exhaust nozzle throat, said converging and diverging portions being pivotable into the exhaust nozzle throat;
• a second diverging portion positioned downstream of said first diverging portion;
• and
• means for selectively rejecting one high pressure secondary air or ram air into said exhaust stream, wherein, in a first position, said high pressure secondary air is injected to vector at least aid core air in a direction Which is non-parallel to a major axis of the engine, and in second position, said ram air is injected into said exhaust stream to flow external of said core air through said exhaust stream passageway, said injecting means being movable between the first and second position.

An exhaust nozzle for a gas turbine engine, the engine having a major axis, at least one ram air duct, at least one high pressure fan air duct terminating at the exhaust nozzle, and an exhaust stream passageway for the flow of an exhaust stream, including fan air, ram air, and core air, through the exhaust nozzle, the exhaust nozzle comprising:

• a plurality of convergent flaps arranged to converge the exhaust stream;
• a plurality of divergent flaps arranged to diverge the exhaust stream and positioned downstream of the convergent flaps, each divergent flap being pivotally associated with a corresponding convergent flap;
• a fixed cowling having divergent cowling walls downstream of the divergent flaps, each of said divergent flaps having a corresponding cowling wall defining a flow surface, wherein the core air flows adjacent to the convergent and divergent flaps and the ram air from the ram air duct enters the exhaust nozzle downstream of the divergent flaps and flows adjacent the fixed cowling;
• one pivotable fan air manifold for each flow surface, each pivotable fan air manifold being connected to a high pressure fan air duct, the pivotable fan air manifold being downstream of the ram air duct, wherein the manifold is pivotable between an off, non-vectoring position where the manifold blocks the flow of high pressure fan air into the exhaust stream, and an on, vectoring position, where the manifold is pivoted inwardly from the major engine axis and where the manifold blocks the flow of ram air and injects high pressure fan air where the ram air would otherwise be injected, with the exhaust stream vectoring away from the engine major axis to the opposing flow surface in the on position.

An exhaust nozzle for a gas turbine engine, said engine having a major axis, at least one ram air duct for flowing ram air, and at least one high pressure fan air duct for flowing fan air and terminating at the exhaust nozzle, the engine having an exhaust stream, which includes at least one of core air, fan air, and ram air, through the exhaust nozzle, the exhaust nozzle comprising:

• at least one convergent flap arranged to converge the flow of core air;
• a corresponding number of divergent flaps, the divergent flaps being located downstream of the convergent flaps and each divergent flap being pivotally connected to a corresponding convergent flap;
• a fixed cowling having a corresponding number of divergent walls downstream of the divergent flaps, each said divergent flap and each corresponding cowling wall defining a flow surface, the core air flowing adjacent to the convergent and divergent flaps and the ram air flowing downstream of the divergent flaps and adjacent to the fixed cowling;
• a plurality of pivotable fan air manifolds connected to the high pressure fan air duct, the pivotable fan air manifolds being located at a downstream end of the ram air duct, so that when the manifolds are in an off position, the engine is in non-vectoring operation and the manifolds block the flow of high pressure fan air into the exhaust stream, the fan air having a higher pressure than the ram air and, in an on position, when the pivotable fan air manifolds pivot inward from the major engine axis, the manifolds block the flow of ram air and inject high pressure fan air where the ram air would otherwise be injected into the exhaust stream, with the core air vectoring away from the engine major axis and toward the opposing flow surface.