36 results about "Infrared signature" patented technology

An insect killing system optimized for mosquitoes uses multiple thermal gradients to simulate the breathing and body heat from animals, including human beings and fowl, to attract insects for subsequent electrocution. The system comprises an elongated, generally parallelepiped housing supported upon a lower base. A heating tower shrouded by the housing supports a spaced apart, generally pyramidal roof. Several slits penetrate the base to permit air entry. An internal fan draws air into the base where the air mixes with scents, pheromones, and / or moisture. Mixed air is blown into and through the heating tower. An internal baffle divides the tower interior into separate, spaced apart compartments. A lower compartment houses a heater, and an adjacent upper compartment vents warmed air to atmosphere, creating numerous separate streams of warmed air that, to an insect, emulate human breathing. The baffle restricts air flow to create a pressure differential while ensuring adequate residence time to sufficiently warm the air. Heated air traversing the upper compartment is expelled through a plurality of discharge orifices. The resulting multitude of warm air currents creates an infrared signature emulating human breathing to attract mosquitoes. Additionally, a motorized mechanism provides movement of the apparatus to create motion simulating a living creature, which provides a further attractant to mosquitoes.

A method for preventing the discovery of military aircraft and missiles by enemy and infrared detectors. The method involves applying a coating of a ferrite containing glass composition to the surfaces of those metal or ceramic substrates that are susceptible to detection through their radar or infrared signature.

Various methods of inspecting a film on a semiconductor workpiece for a residue are provided. In one aspect, a method of inspecting a film on a semiconductor workpiece wherein the film has a known infrared signature is provided. The method includes heating the workpiece so that the film emits infrared radiation and sensing the infrared radiation emitted from the film. The infrared signature of the radiation emitted from the film is compared with the known infrared signature and a signal indicative of a deviation between the infrared signature of the emitted infrared radiation and the known infrared signature is generated. The method enables the rapid and accurate detection of residues, such as oxide residues on nitride films.

A system and method for cooling at least a portion of an engine are provided. The engine is cooled using a fuel, such as a high heat sink fuel, that is subsequently used for combustion in the engine. The fuel can be used to cool one or more of the gases and / or components in the engine, thereby cooling the engine including an exhaust nozzle. For example, the fuel can be circulated through one or more heat exchanging devices that are disposed inside or outside a passage of the engine, and the fuel can absorb thermal energy from the engine or air that flows in the engine passage. In any case, the cooling of the engine can result in a reduction to the infrared signature of the engine.

A system and method for cooling at least a portion of an engine are provided. The engine is cooled using a fuel, such as a high heat sink fuel, that is subsequently used for combustion in the engine. The fuel can be used to cool one or more of the gases and / or components in the engine, thereby cooling the engine including an exhaust nozzle. For example, the fuel can be circulated through one or more heat exchanging devices that are disposed inside or outside a passage of the engine, and the fuel can absorb thermal energy from the engine or air that flows in the engine passage. In any case, the cooling of the engine can result in a reduction to the infrared signature of the engine.

A method for measurement of a film cooling effect is disclosed. Film cooling is a technique developed to protect gas turbine engine components from the extremely high temperatures created during its operation. A controlled air pressure is ducted into the hollow interior of the component and the mass rate of air flowing through the plurality of film cooling features or openings is measured. A coolant is then injected into the hollow interior of the component and allowed to flow out of a film cooling feature onto the heated outer surface of the component. The resulting infrared signature is a measure of the relative cooling effect generated by the individual film cool feature. The film cooling effect for an individual feature is quantified as the proportion of mass rate of airflow contributed by its relative individual cooling effect. The area, location and shape of the cooling effect are further classified to determine the degree of conformance to its design intent.

An infrared signature suppression system for reducing infrared radiation emitted by a vehicle. The system includes an elongate duct mounted on the vehicle having a hollow interior extending along an axial centerline between an upstream end and a downstream end for transporting exhaust gas emitted by the vehicle, and a baffle positioned in the hollow interior of the duct between the upstream end and the downstream end. At least a portion of at least one of the duct and the baffle includes an emissivity coating for reducing infrared radiation emitted by the vehicle.

A method facilitates assembling a gas turbine engine. The method comprises mounting a core engine to a vehicle, coupling a fuselage radially outward and around the core engine, and coupling an exhaust nozzle to the core engine to channel exhaust gases discharged from the core engine. In addition, the method also comprises coupling an infrared suppression system in flow communication with the engine exhaust nozzle for channeling exhaust gases discharged from said exhaust nozzle to facilitate suppressing an exhaust infrared signature of the core engine during operation, wherein the infrared suppression system includes an access door and a flow channel that is coupled to the access door such that the flow channel is movable with the access door from a closed position to an open position.

An infrared signature suppression system for reducing infrared radiation emitted by a vehicle. The system includes an elongate duct mounted on the vehicle having a hollow interior extending along an axial centerline between an upstream end and a downstream end for transporting exhaust gas emitted by the vehicle, and a baffle positioned in the hollow interior of the duct between the upstream end and the downstream end. At least a portion of at least one of the duct and the baffle includes an emissivity coating for reducing infrared radiation emitted by the vehicle.

A method for measurement of a film cooling effect is disclosed. Film cooling is a technique developed to protect gas turbine engine components from the extremely high temperatures created during its operation. A controlled air pressure is ducted into the hollow interior of the component and the mass rate of air flowing through the plurality of film cooling features or openings is measured. A coolant is then injected into the hollow interior of the component and allowed to flow out of a film cooling feature onto the heated outer surface of the component. The resulting infrared signature is a measure of the relative cooling effect generated by the individual film cool feature. The film cooling effect for an individual feature is quantified as the proportion of mass rate of airflow contributed by its relative individual cooling effect. The area, location and shape of the cooling effect are further classified to determine the degree of conformance to its design intent.

A method facilitates assembling a gas turbine engine. The method comprises mounting a core engine to a vehicle, coupling a fuselage radially outward and around the core engine, and coupling an exhaust nozzle to the core engine to channel exhaust gases discharged from the core engine. In addition, the method also comprises coupling an infrared suppression system in flow communication with the engine exhaust nozzle for channeling exhaust gases discharged from said exhaust nozzle to facilitate suppressing an exhaust infrared signature of the core engine during operation, wherein the infrared suppression system includes an access door and a flow channel that is coupled to the access door such that the flow channel is movable with the access door from a closed position to an open position.

A method and system for capturing a written signature is presented. A tip of an infrared transmitting pen transmits an infrared signal to infrared sensors that are aligned along two sides of a rectangular writing surface. As a person's signature is written with the infrared transmitting pen, the sensors capture the written signature.

A method for measuring an infrared signature of a moving target includes: tracking the moving target with a tracking system along a path from a start position to an end position, measuring infrared radiation data of the moving target along the path, repositioning the tracking system to the start position, retracing the path to measure the infrared radiation data of the background, and determining the infrared signature of the moving target by comparing the infrared radiation data of the moving object with the infrared radiation data of the background without the moving object.

An object such as an aircraft in flight is obscured from infrared detection when viewed from an external viewing location. The method includes providing the object having an externally viewable hot region associated therewith, wherein the hot region has a temperature greater than 150° C. A source of an obscuring agent is provided, wherein the obscuring agent comprises a mixture of carbon dioxide gas and water vapor. The obscuring agent is ejected from a dispensing location so as to flow between the hot region and the external viewing location. The obscuring agent has a temperature of less than that of the hot region.

The magazine carrier has flexible yet durable material of construction and slides directly into a rifle magazine and is kept on the magazine during loading into a rifle. The carrier includes novel features for the modern operator including forward facing finger grips and a loop at the bottom to provide magazine drawing and storage options as well as impact protection to the magazine. In addition to providing direct protection to the magazine from contaminants such as dirt and mud, the magazine carrier can also be provided in an alternative embodiment with infrared signature reduction panels to provide the operator with an overall reduced infrared signature.

The invention provides a low infrared signature lobe injection mixing device used for a two-dimensional nozzle outlet. The low infrared signature lobe injection mixing device comprises a rectangular transition section, lobe sections, lobe transition sections and separated cold and hot flow channel sections. A traditional two-dimensional nozzle molded surface cannot effectively shield inner high temperature parts (a center cone, a support plate and a mixer) of an exhaust system, while the special lobe molded surface and baffle plates in separated cold and hot flow channels of the device can effectively shield the high temperature parts, and the detectable infrared radiation of the high temperature parts is reduced; the separated cold and hot flow channel sections separate high temperature combustion-gas flow from injected cold air flow, so that the resistance of cold air flow injection is effectively decreased, and the injection quantity of cold air flow is guaranteed to be quite considerable; and besides, cold flow and hot flow are mixed at the outlet of the device, so that the temperature of the jet flow is greatly decreased, and the infrared radiation of the jet flow can be reduced.

The invention discloses an infrared tire pressure monitoring system and method thereof and a vehicle. The infrared tire pressure monitoring system comprises an infrared detector, a controller and an alerting device. The infrared detector is arranged on an underpan of the vehicle to monitor infrared signature information of underpan parts and output the infrared signature information of the underpan parts. The controller is used for receiving the infrared signature information of the underpan parts and determining whether a scanning monitoring mode is started or not based on the infrared signature information of the underpan parts; and under the scanning monitoring mode, the controller controls the infrared detector to detect infrared signature information of each tire, and tire pressure information is obtained according to the infrared signature information of the tires. The alerting device is controlled by the controller to send alerting signals when the tiresare in an underpressure forewarning state or a tire puncture forewarning state according to the tire pressure information. The infrared tire pressure monitoring system is not required to be installed on every tire, one infrared detector is needed for scanning and monitoring, and therefore real time monitoring, easy maintenance and the economic characteristic are achieved.

An apparatus and method for utilizing any arbitrary mixture ratio of multiple fuel gases having differing combustion characteristics, such as natural gas and hydrogen gas, within an internal combustion engine. The gaseous fuel composition ratio is first sensed, such as by thermal conductivity, infrared signature, sound propagation speed, or equivalent mixture differentiation mechanisms and combinations thereof which are utilized as input(s) to a “multiple map” engine control module which modulates selected operating parameters of the engine, such as fuel injection and ignition timing, in response to the proportions of fuel gases available so that the engine operates correctly and at high efficiency irrespective of the gas mixture ratio being utilized. As a result, an engine configured according to the teachings of the present invention may be fueled from at least two different fuel sources without admixing constraints.

A method for assembling a gas turbine engine includes mounting a core engine to a vehicle, coupling a fuselage radially outward and around the core engine, coupling an exhaust nozzle to the core engine to channel exhaust gases discharged from the core engine, wherein the exhaust nozzle includes a cowl and a primary nozzle coupled radially inward from the cowl, and coupling an infrared suppression system in flow communication with the engine exhaust nozzle to facilitate suppressing an exhaust infrared signature of the core engine, wherein the infrared suppression system includes a blocking fin having a substantially U-shaped cross-sectional profile and such that a cooling air flowpath is defined between the cowl and the blocking fin.

The invention discloses a tent lamp with a low infrared signature. The tent lamp with the low infrared signature comprises a plurality of lamp beads, a power supply, a pair of lamp holder bases respectively attached with a heat dissipation layer and a lamp support with a chamber and an outer mounting surface. The plurality of lamp beads are uniformly distributed and spaced on the entire mounting surface. The lamp support and the lamp beads are completely covered in a housing. The housing comprises an inner light transmitting case, an outer light transmitting case and a sealed heat insulation cavity between the two layers of light transmitting cases. The lamp support and the housing are cradled between the lamp holder bases, in contact with the lamp holder bases and closes both ends of the lamp support and the housing respectively. The power supply is closely fitted to the inner wall of the chamber of the lamp support. According to the tent lamp with the low infrared signature, a multistage buffering heat absorption structure is arranged, so that the heat dissipated by a light source is exchanged with the outside through a plurality of mediums, the heat dissipation rate is larger than the heat transfer rate, and accordingly the whole lamp is maintained at a lower temperature.

A method for assembling a gas turbine engine includes mounting a core engine to a vehicle, coupling a fuselage radially outward and around the core engine, coupling an exhaust nozzle to the core engine to channel exhaust gases discharged from the core engine, wherein the exhaust nozzle includes a cowl and a primary nozzle coupled radially inward from the cowl, and coupling an infrared suppression system in flow communication with the engine exhaust nozzle to facilitate suppressing an exhaust infrared signature of the core engine, wherein the infrared suppression system includes a blocking fin having a substantially U-shaped cross-sectional profile and such that a cooling air flowpath is defined between the cowl and the blocking fin.

A heat seeking missile decoy device mounted on a military vehicle to change the infrared signature of the military vehicle. The device is at ambient temperature when stored on the military vehicle. When a heat seeking missile is fired at the military vehicle, the decoy device deploys and increases in temperature, changing the infrared signature of the vehicle and causing a hot spot away from vulnerable components of the vehicle. The hot spot radiates in the infrared in an area that is away from vulnerable parts of a military vehicle, drawing the heat seeking missile toward it. The termination trajectory of the heat seeking missile is at the end of the decoy device and not the vulnerable parts of the military vehicle. The energy required to heat the device is passive waste energy from the vehicle engine exhaust.

An exhaust gas distribution device for the engine of a vehicle, wherein said device incorporates means to control the evacuation of the gases towards a classical exhaust system or else towards a specific exhaust system, said specific exhaust system incorporating means to dilute and reduce the visible, sound and infrared signatures of said vehicle.

Provided herein are VIS-IR powders comprising tin which show significantly higher visual intensity, reduced reaction temperature and particle temperature during and after oxidation reaction in air, and improved resistance to clumping when compared to comparable powders without tin. Methods of preparation of said VIS-IR powders are also disclosed.

The invention relates to a covered film for visible light and infrared signature weakening and a matching device. The covered film for visible light and infrared signature weakening comprises a film body, wherein the film body is of an integrated structure, a heat exchange interlayer and a color simulation interlayer which are independent of each other are arranged in the film body, the two ends of a plurality of heat exchange pipes arranged in parallel in the width direction of the film body jointly communicate with a heat exchange collecting pipe to form the heat exchange interlayer, and thetwo ends of a plurality of color simulation pipes arranged in parallel in the width direction of the film body jointly communicate with a color simulation collecting pipe to form the color simulationinterlayer; and the heat exchange interlayer communicates with a heat exchange circulation loop, the color simulation interlayer communicates with a color simulation circulation loop, and the heat exchange circulation loop is independent of the color simulation circulation loop. Through the heat exchange interlayer, the heat is absorbed efficiently, so that the infrared radiation features of useobjects are effectively reduced. The color simulation interlayer forms the same color or color simulation effect conversion with the environment on the surfaces of the user objects, so that the identifiability of visible light images of the use objects is effectively reduced. The covered film for visible light and infrared signature weakening is suitable for small surface ships and can greatly promote the concealment of navigation under the high risk environment of the small surface ships.

The invention relates to the technical field of infrared camouflage equipment for entrances and exits of national defense projects, and discloses an infrared false indication system for tunnel engineering entrances and exits and a manufacturing method thereof. The infrared false indication system for tunnel engineering entrances and exits includes infrared false indication doors 5, intelligent control systems 6 and solar energy Photovoltaic power supply system 7, the infrared false door includes: low emissivity coating 1, electrothermal film 3, polystyrene foam plastic plate 4 and thin iron sheet frame 2, and the thin iron sheet frame 2 is wrapped with polystyrene foam plastic Plate 4, electrothermal film 3, and the outer surface of the iron frame 2 is coated with a low-emissivity coating; wherein, the electrothermal film 3 is connected to the intelligent control system 6 connected to the solar photovoltaic power supply system through cables. The invention can effectively simulate the entrance and exit of the national defense project, and the thermal infrared image is bright in daytime, and the thermal infrared image is dark in night. It realizes intelligent and real-time simulation of thermal infrared characteristics of entrances and exits; solves the problem of unavailable power supply in the field, and realizes the unattended infrared false display system.

The invention provides a low-infrared characteristic lobe ejection mixing device for the outlet of a binary nozzle, which includes a rectangular transition section, a wave section, a wave transition section and a separate cold and hot flow channel section. For the traditional two The high-temperature components inside the exhaust system (central cone, support plate, mixer) that cannot be effectively shielded by the nozzle profile can be effectively shielded by the special wave lobe profile of the device and the separate inner partition of the cold and hot flow channels. Reduce the detectable infrared radiation of these high-temperature components, and at the same time, the separate cold and hot flow channel sections separate the high-temperature gas flow from the ejected cold air flow, effectively reducing the resistance of the ejected cold air flow, It ensures that the amount of injected cold air flow is very considerable, and the cold and hot air are mixed at the outlet of the device, which greatly reduces the temperature of the jet flow, thereby reducing the infrared radiation of the jet flow.