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7614210 |
Double bypass turbofan
A variable cycle turbofan engine includes first and second fans independently joined to respective turbines. A first bypass duct surrounds a core engine disposed in flow communication with the...
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7607286 |
Regenerative turbine blade and vane cooling for a tip turbine engine
A fan-turbine rotor assembly ( 24 ) includes a multitude of turbine blades ( 34 ) which each define a turbine blade passage which bleed air from a diffuser section ( 74 ) to provide for...
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7604201 |
Nacelle drag reduction device for a turbofan gas turbine engine
The nacelle drag reduction device comprises a substantially circular and axis symmetrical external airfoil concentric with a aft section of the nacelle and located outside a propulsive jet zone...
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7599767 |
Control apparatus and control method for aircraft
When both engines operate properly, a control apparatus for an aircraft performs control of thrust and attitude of an aircraft using an output that is produced evenly by the two engines. When a...
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7581384 |
Turbomachine nozzle cover provided with triangular patterns having a point of inflexion for reducing jet noise
The invention relates to an annular cover for a turbomachine nozzle, the cover having a plurality of patterns extending a trailing edge of said cover and spaced apart circumferentially from one...
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7543777 |
Air guiding flap of an aircraft comprising control of the pressure forces impinging thereon, process for adjusting the position of an air guiding flap and ram air system including such an air guiding flap
An air guiding flap of an aircraft wherein one surface thereof faces an air duct and is exposed to a prevailing pressure in the air duct and whose opposite surface is exposed to the pressure of the...
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7530217 |
Axial flow positive displacement gas generator with combustion extending into an expansion section
An axial flow positive displacement engine has an inlet axially spaced apart and upstream from an outlet. Inner and outer bodies have offset inner and outer axes extend from the inlet to the outlet...
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7520124 |
Asymmetric serrated nozzle for exhaust noise reduction
An exhaust nozzle for use in a gas turbine engine comprises a flow body for receiving exhaust gas from the turbine engine and includes a leading edge and a trailing edge. The leading edge connects...
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7506501 |
Compact mixer with trimmable open centerbody
Compact exhaust mixer assemblies comprising a compact mixer and a trimmable open centerbody are provided. The trimmable center body allows for adjustments of the open centerbody after manufacturing...
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7475545 |
Fladed supersonic missile turbojet
A turbojet engine includes a core engine, afterburner, and converging-diverging exhaust nozzle disposed in serial flow communication. A bypass duct surrounds the core engine and afterburner and...
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7434384 |
Fluid mixer with an integral fluid capture ducts forming auxiliary secondary chutes at the discharge end of said ducts
A fluid mixer for mixing two fluid streams 40, 42 includes a set of main lobes 26 defining alternating primary and secondary main chutes 30, 32 , one or more auxiliary lobes 28 intermediate...
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7424805 |
Supersonic missile turbojet engine
A turbojet engine includes a core engine, an afterburner, and a converging-diverging exhaust nozzle in serial flow communication. A controller is operatively joined to the core engine and...
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7399155 |
Fluid flow guide element and fluid flow apparatus equipped therewith
A fluid flow guide element ( 1 ) constructed, for example, as a diffuser having an inlet opening ( 2 ) and an outlet opening ( 3 ) whose respective cross-sectional areas differ from one another....
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7392651 |
Turbomachine nozzle cover for reducing jet noise
A cowl for a turbomachine nozzle, the cowl having a plurality of repeated patterns disposed circumferentially at a trailing edge, each pattern being asymmetrical about a midplane of the pattern...
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7389635 |
Twisted mixer with open center body
An exhaust mixer assembly having a twisted mixer and an open centerbody is provided. The open centerbody is centrally disposed within the twisted mixer and helps to provide efficient cooling of...
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7340883 |
Morphing structure
An apparatus is provided that includes a body having a first wall and a second wall, at least one appending structure extending from an end of the body and at least one actuator positioned between...
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7313920 |
Aircraft engine mounting
An aircraft engine mounting assembly comprising a bracket arrangement with two plates located either side of an opening in the structural bypass duct. The bracket arrangement mounts two inclined...
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7310939 |
Device for reducing the jet noise of a turbomachine
A device for reducing the jet noise of a turbomachine, the turbomachine having a longitudinal axis and a substantially cylindrical nozzle extending along the longitudinal axis of the turbomachine,...
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7305817 |
Sinuous chevron exhaust nozzle
A gas turbine engine exhaust nozzle includes a row of laterally sinuous chevrons extending from an aft end of an exhaust duct. The chevrons have radially outer and inner surfaces bound by a...
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7296397 |
Ventilation system for a convergent divergent exhaust nozzle
The invention relates to a ventilation system for a convergent divergent exhaust nozzle in a bypass turbojet comprising an afterburn chamber surrounded by an annular passage through which...
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7251927 |
Jet nozzle mixer
A second stage external jet nozzle mixer ( 20 ) includes identically formed lobes which equal in number the lobes of the first stage internal mixer. The external mixer works with the internal...
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7246481 |
Methods and apparatus for operating gas turbine engines
A method for operating a gas turbine engine includes channeling compressed air from the gas turbine engine to a noise suppression system, and selectively operating the noise suppression system such...
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7237378 |
Turbomachine with low noise emissions for aircraft
The invention relates to a turbomachine ( 1 ) for an aircraft comprising a gas generator ( 4 ) designed such that hot gases are ejected from a combustion chamber ( 28 ) towards the upstream side of...
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7219490 |
Nested core gas turbine engine
A gas turbine engine comprising a combustion chamber section, a turbine section, and a compressor section. The turbine section surrounds the combustion chamber and the compressor section surrounds...
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7216475 |
Aft FLADE engine
An aft FLADE gas turbine engine includes a fan section drivenly connected to a low pressure turbine section, a core engine located between the fan section and the low pressure turbine section, a...
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7200999 |
Arrangement for bleeding the boundary layer from an aircraft engine
An aircraft engine comprising a nacelle, a first wall and fan outlet guide vanes. The fan outlet guide vanes comprises a plurality of stator vanes extending between a second wall and a third wall....
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7188467 |
Methods and apparatus for assembling a gas turbine engine
A method for assembling a gas turbine engine includes providing a core engine, and providing a flade system including a flade stream augmentor positioned within a flade duct. The method also...
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7140174 |
Methods and apparatus for assembling a gas turbine engine
A method for assembling a gas turbine engine includes providing a core engine, an inner fan assembly, and a fladed fan assembly, coupling a plurality of airflow ducts to the engine including an...
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7137245 |
High area-ratio inter-turbine duct with inlet blowing
A bypass channel for use in an inter-turbine transition duct of a gas turbine engine is connected to a suction port disposed upstream of a high-pressure turbine and an injection port disposed...
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7114323 |
Jet exhaust noise reduction system and method
A system for reducing jet noise emission from an internally mixed gas turbine engine exhaust, comprising a fan/core flow mixer having a plurality of mixer lobes and a common flow nozzle having an...
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7111448 |
Jet nozzle mixer
An external jet nozzle mixer includes identically formed lobes. The external mixer works with the internal mixer further to mix the engine internal bypass flow with the internal jet engine core...
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7093423 |
Methods and apparatus for operating gas turbine engines
A method of assembling a gas turbine engine includes coupling an annular exhaust duct to the gas turbine engine, coupling a plurality of chevrons to the annular exhaust duct, and coupling a chevron...
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7065957 |
Segmented mixing device for jet engines and aircraft
Disclosed is a means for reducing jet engine exhaust noise wherein mixing is enhanced between adjacent exhaust flows and between exhaust flow and free-stream flow. Also disclosed is a means for...
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7055329 |
Method and apparatus for noise attenuation for gas turbine engines using at least one synthetic jet actuator for injecting air
A method enables a gas turbine engine to be operated. The method comprises channeling exhaust gases from a core engine through an exhaust assembly and past at least one flow boundary surface, and...
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7055306 |
Combined stage single shaft turbofan engine
A turbofan engine includes a combined stage rotor mounted for common rotation with a shaft, a compressor stage, and a turbine stage. Each of the plurality of fan blades of the combined stage rotor...
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7047725 |
Assembly and method for aircraft engine noise reduction
An assembly useful in reducing aircraft engine noise such as turbofan engine noise comprises: (a) a core portion comprising at least one entrance end and at least one exit end for the passage of...
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7043898 |
Combined exhaust duct and mixer for a gas turbine engine
A gas turbine engine including a gas exhaust duct assembly which comprises an annular shroud forming at least a section of an inner wall of a gas exhaust duct, a plurality of strut members radially...
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7037430 |
System and method for desalination of brackish water from an underground water supply
A system and method of desalinating brackish water from an inland, underground water supply is disclosed. The system includes a source of underground water, at least one distillation and/or...
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7021042 |
Geartrain coupling for a turbofan engine
Molybdenum disulfide (MoS 2 ) is used as a journal coating for a gearing system. A particular application is the planetary gear system of a geared turbofan engine. Particularly advantageous...
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7017332 |
Lobe mixer for jet flow
There is disclosed a lobe mixer comprising: a cylindrical partition wall 22 which partitions a high-speed inner flow from a low-speed outer flow; a lobe portion 24 which is disposed on a...
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7017331 |
Jet nozzle mixer
A second stage external jet nozzle mixer ( 20 ) includes identically formed lobes which equal in number the lobes of the first stage internal mixer. The external mixer works with the internal...
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7000378 |
Gas turbine engine exhaust nozzle having a noise attenuation device driven by shape memory material actuators
A gas turbine engine exhaust nozzle arrangement for the flow of exhaust gases therethrough between an upstream end and a downstream end thereof comprising a nozzle and a plurality of tabs which...
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6971229 |
Confluent exhaust nozzle
A gas turbine engine exhaust nozzle includes a nacelle having an inlet and main outlet at opposite ends, and a main duct extending therebetween. A secondary bypass duct extends radially through the...
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6968701 |
Engine integrated auxiliary power unit
The present invention relates to an engine integrated auxiliary power unit. The engine comprises a high pressure spool which includes a high pressure compressor connected to a high pressure turbine...
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6945031 |
Recessed engine nacelle
A gas turbine engine nacelle includes an inner skin surrounded by a radially outer skin. The inner skin terminates at an exhaust outlet. The outer skin terminates at a recess in the inner skin...
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6938407 |
Bleed-off device in a bypass turbojet
This object is achieved by the bleed-off means comprising means for tapping air from the primary duct which are arranged upstream of the intermediate casing and means for evacuating the air tapped...
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6935098 |
Turbomachine nozzle with noise reduction
A nozzle comprising an inner barrel, a centerbody disposed inside the inner barrel so as to define a first channel for a primary flow, and an outer barrel surrounding the inner barrel so as to...
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6804948 |
Lobe mixer for jet engine
A lobe mixer ( 22 ) used in jet engines, is provided with diameter expansion portions ( 22 a ) in which the diameters gradually increase in the downstream direction, in which adjacent diameter...
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6786038 |
Duplex mixer exhaust nozzle
A turbofan engine exhaust nozzle includes cooperating outer and inner mixers. The outer mixer includes alternating outer lobes and outer chutes. The inner mixer includes alternating inner lobes and...
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6786037 |
Segmented mixing device having chevrons for exhaust noise reduction in jet engines
Disclosed is a segmented mixing device for reducing jet engine exhaust noise wherein mixing is enhanced between adjacent exhaust flows and between exhaust flow and free-stream flow. The device does...
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