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8813907 Noise reduction system with chamber  
A noise reduction system with a chamber includes a chamber (17) which is provided at a portion of a supply path connecting a flow path in an upstream side of a combustor in a jet engine to a...
8813504 Assembly procedure for the adjustable pin-valve, fuel shut-off  
A protocol for assembling a fuel shut off pin valve assembly for a gas turbine engine. The protocol outlines a specific sequence of events in order to ensure failsafe incorporation of a fuel shut...
8757319 Turbojet engine nacelle  
A turbojet engine nacelle includes at least one nacelle element having a wall delimiting a main flow channel. The flow channel has a variable flow passage section. The cross-sectional area of at...
8640820 High-speed jet noise reduction via fluidic injection  
A noise reducer for reducing engine noise of a jet engine having a central axis and a main exhaust nozzle. The noise reducer includes a tubular member having ports at a distal end and is aligned...
8621842 Exhaust silencer convection cooling  
An example auxiliary power unit (APU) exhaust silencer includes cooling features to protect the outer skin and other components from heat generated by gases passing through an exhaust duct. Cooling...
8584356 Method of manufacturing a CMC flow mixer lobed structure for a gas turbine aeroengine  
A method of fabricating a lobed structure for a gas turbine flow mixer having an annular upstream portion extended downstream by a portion forming a multilobed skirt, the method comprising: making...
8556027 Eductor exhaust silencer assembly with bypass gasflow  
An exhaust silencer assembly for use with an auxiliary power unit includes an eductor and a discharge pipe. The eductor is disposed downstream of the auxiliary power unit and has an entrance...
8544278 Turboshaft engine with reduced noise emission for aircraft  
According to the invention, a plurality of embossments (20) having a rectangular section is provided at the inner periphery of the outlet opening (7) of the fan duct (12), said embossments being...
8539748 Segmented inertial particle separators and methods of assembling turbine engines  
A method for assembling a turbine engine including a compressor is disclosed. The method includes coupling an inlet including an inertial particle separator (IPS) and a first surface that is...
8516824 Gas ejection cone for an aircraft turbojet equipped with a device for generating turbulence in a primary flow limiting jet noise  
A gas ejection cone for an aircraft turbojet, the cone including a hollow main body defining, on the outside, a radially inner skin of an annular primary flow channel, and a device generating...
8225592 Microjet noise suppression system for jet engines  
A jet engine noise suppression system uses a plurality of microjets that are located on a frame downstream of the exhaust port of a jet engine. Each microjet issues a microjet flow, either liquid...
8220586 Noise-reduced aircraft engine and method for reducing noise emissions of an aircraft engine  
A method for reducing noise emissions of an aircraft engine (3) having a gas turbine (7), includes providing a hot gas layer underneath at least one noise-emitting area of the aircraft engine.
8157050 Device for reducing noise generated by an aircraft jet engine with curve ducts  
A jet engine, including a wall surrounding a first gas flow ejected from a downstream end of the wall along a longitudinal axis, a second flow of gas running outside the wall in a direction of...
8069647 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...
8069666 System for generating shaft horsepower using waste heat  
One or more systems for generating shaft horsepower by using waste heat from combustion exhaust are provided herein. The system can include a heat recovery silencer, a turbine, a compressor, a...
7882696 Integrated support and mixer for turbo machinery  
A support and air mixer includes an inner annular member, an outer annular member shaped and positioned such that an annular air gap is formed between the inner annular member and the outer annular...
7866141 Cooling device for the primary nozzle of a dual-flow turbojet engine  
The invention relates to a dual-flow turbojet engine comprising an engine which is disposed in a nacelle and is provided with case which defines jointly with the said nacelle an annular passage...
7827780 Assembly procedure for the adjustable pin-valve, fuel shut-off  
A protocol for assembling a fuel shut off pin valve assembly for a turbo fan engine. The protocol outlines a specific sequence of events in order to ensure failsafe incorporation of a fuel shut off...
7802752 Jet engine noise suppressor  
An embodiment of the invention is a technique to suppress noise in a jet engine. A substantially annular fan nozzle is attached to a pylon and discharges a fan stream into atmosphere from an aft...
7784270 Rotary motion mixer for a converging-stream nozzle of a turbomachine  
The invention relates to a mixer for a bypass turbomachine, the mixer comprising a member having a sinusoidal portion at its end defining inner lobes and outer lobes, each outer lobe comprising a...
7735601 Engine noise  
In order to provide noise suppression, bumps or undulations are provided on a nozzle surface in order to vary the convergent-divergent ratio between that surface and an opposed nozzle surface. By...
7677026 Mixer for separate-flow nozzle  
A mixer for a separate-stream turbojet nozzle, the mixer comprising along a longitudinal axis (X-X′) both a fastener shroud (10) for connecting said mixer to the exhaust casing of the nozzle, and a...
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...
7578369 Mixed-flow exhaust silencer assembly  
An exhaust silencer assembly comprising a casing having an exhaust gas entrance opening, an exhaust gas exit opening, and a cooling air inlet opening, and an acoustic-attenuating porous liner...
7516815 Arrangement for the generation of sonic fields of a specific modal composition  
A device for simulating sound produced by certain equipment, for example a rotor-stator arrangement of a turbomachine, or for generation of opposing sound fields for active sound control, including...
7448215 Combustion chamber for a gas turbine engine  
A combustion chamber suitable for a gas turbine engine is provided with at least one Helmholtz resonator having a resonator cavity and a resonator neck in flow communication with the chamber...
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 two of...
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...
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...
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,...
7308966 Device for reducing jet engine exhaust noise using oscillating jets  
A device for reducing engine exhaust noise in an aircraft engine includes a number of oscillating jets which direct an oscillating flow into the engine exhaust. The oscillating jets are connected...
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 mixer,...
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...
7080514 High frequency dynamics resonator assembly  
Aspects of the invention relate to resonator assemblies for use in non-uniform flow environments. The resonator assemblies include one or more features, such as a box or a scoop, for substantially...
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...
7062908 Construction for exhaust emission control  
An object of the present invention is to provide a construction for exhaust emission control, which can prevent thermal deterioration in a catalyst and can heat exhaust gas to a catalyst activation...
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...
7055308 Detonation damper for pulse detonation engines  
An engine includes at least one pulse detonation chamber configured to receive and detonate a fuel and an oxidizer. The pulse detonation chamber has an outlet end and includes a porous liner...
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...
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...
6910550 Muffler arrangement for an internal combustion engine  
A muffler arrangement includes an exhaust-gas muffler, which is subdivided into an inlet space and an outlet space. An exhaust-gas stub of an internal combustion engine opens into the inlet space....
6896100 Noise reducing apparatus and exhaust nozzle for jet engine  
In order to reduce noise effectively and to provide a light-weight noise reducing apparatus and an exhaust nozzle for a jet engine, a mixer for mixing an exhaust gas and an external air is disposed...
6804948 Lobe mixer for jet engine  
A lobe mixer (22) used in jet engines, is provided with diameter expansion portions (22a) in which the diameters gradually increase in the downstream direction, in which adjacent diameter expansion...
6718752 Deployable segmented exhaust nozzle for a jet engine  
An exhaust flow nozzle for a jet engine having a plurality of flow altering components extending from a lip portion of a secondary exhaust nozzle that are movable between first and second...
6640537 Aero-engine exhaust jet noise reduction assembly  
A gas turbine engine of a fan bypass type includes an exhaust shroud having a perforated tubular wall extending between a forward end and an aft end. The exhaust shroud is adapted to be affixed to...
6615857 Modular flow control actuator  
The present invention is a flow control actuator capable of exciting a fluid via the coupling of edge tones generated along a wedge and resonance generated within a cavity. The invention consists...
6615576 Tortuous path quiet exhaust eductor system  
A tortuous path quiet exhaust eductor system may be mounted to a gas turbine engine, such as commercial aircraft APU. The system includes an oil cooler, eductor primary nozzle, oil cooler air...
6606854 Exhaust mixer and apparatus using same  
Disclosed is an exhaust mixer (50) including a passage (54) extending from an inlet (56) to an outlet (58) that is coincident with a centerline axis of mixer (50). Several ridges (68) are...
6578355 Bloom mixer for a turbofan engine  
The invention relates to lobe-type mixer tube for a bypass jet engine in which a bypass flow delivered by a fan is mixed with a hot gas stream issuing from the core engine, said lobe-type mixer...
6571549 Jet noise suppressor  
A jet noise suppressor is disclosed. The jet noise suppressor includes first and second high frequency pulse injection units located exteriorly of the turbine engine exhaust nozzle. The pulse...
Matches 1 - 50 out of 175 1 2 3 4 >