초록 ▼

An exhaust nozzle for a gas turbine engine where pitch and yaw vectoring is achieved using fluidics by injecting high pressure air into the exhaust stream. The injected high pressure air deflects the exhaust stream, vectoring the aircraft accordingly. The injected high pressure air for vectoring is

An exhaust nozzle for a gas turbine engine where pitch and yaw vectoring is achieved using fluidics by injecting high pressure air into the exhaust stream. The injected high pressure air deflects the exhaust stream, vectoring the aircraft accordingly. The injected high pressure air for vectoring is selectively injected. A pivoting manifold 44 allows for injection of either ram air (52) or vectoring high pressure air (56) into the exhaust flow.

대표청구항 ▼

[ What is claimed is:] [1.] An exhaust nozzle for a gas turbine engine, said engine having an exhaust stream passageway and defining flow streams of core air, high pressure secondary air, and ram air which together define parts of an exhaust stream for flow through the exhaust stream passageway, sai

[ What is claimed is:] [1.] An exhaust nozzle for a gas turbine engine, said engine having an exhaust stream passageway and defining flow streams of core air, high pressure secondary air, and ram air which together define parts of an exhaust stream for flow through the exhaust stream passageway, said exhaust nozzle comprising:means for selectively injecting one of 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 said core air in a direction which is non-parallel to a major axis of the engine, and, in a 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. [15.] A method for vectoring an exhaust stream of a gas turbine engine in an exhaust stream passageway of an exhaust nozzle, which comprises:injecting high pressure air at a first portion of the periphery of the exhaust nozzle from at least one first manifold, with a velocity vector of the injected high pressure air being non-parallel to a velocity vector of the exhaust stream, as measured at said manifold before the high pressure air is injected;simultaneously injecting ram air at at least a second portion of the periphery of the exhaust nozzle from at least one second manifold into the exhaust stream passageway, the ram air flowing along and adjacent to at least one wall of the exhaust stream passageway and external of the exhaust stream, andconfiguring each first and second manifold to be able to selectively inject either high pressure air or ram air into said exhaust stream passageway, wherein said injected ram air at a lower pressure than said pressure air and said exhaust stream. The method of claim 15, which further comprises providing at least three manifolds which substantially surrounds the periphery of the exhaust nozzle and including at least one first manifold and at least two second manifolds. The method of claim 15, which further comprises positioning the first and second manifolds at the same selected longitudinal position within said exhaust nozzle. 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. The exhaust nozzle of claim 18 wherein the exhaust nozzle and the flow surfaces are polygonal in configuration.