Abstract: Floor panels are shown with discontinuous surface layers, which are mechanically connectable to each other along one pair of adjacent edges, said floor panels comprising at least two floor elements whereof at least one of the floor elements is non rectangular.

Abstract: This application relates to a light-weight, multi-purpose construction panel. The panel may be formed, for example, from molded plastic. Each panel includes a substantially planar deck on a first side thereof and a second side comprising alternating male and female sleeves arranged in honeycomb-like compartments defined by a plurality of wall elements. A pair of panels may be releasably coupled together with their respective second sides facing inwardly to form a construction assembly. When a pair of panels is coupled together, the male sleeves of one panel matingly fit within the females sleeves of the other panel, and vice versa. Each panel may also include guide tubes which are aligned when the panels are coupled together. A plurality of channels may be formed in the deck on the first side of the panel and spaced-apart apertures may be arranged in the channels in alignment with the guide tubes for insertion of fasteners therein or to allow water drainage through the assembly.

Abstract: A system of blocks is configured to be compatible with each other in the construction of a columnar structure. Each block has four faces and all four faces may generally have the same dimensions. The width of the blocks may generally be about twice their height. The faces of the block also may contain a slot to add an aesthetic appearance to the column. The blocks have certain constructions features that mate with specially constructed brackets in attaching a fence panel to the completed column. The blocks have interlocking elements or projections that permit positive connection between courses of blocks. Projections of one block extend into the core another block. Adjacent blocks can be rotated 90 degrees relative to each other about a vertical axis of each block with each course. The blocks can be used to construct a column that is easy to install and structurally sound.

Abstract: An engineered block for a landscape wall includes front and rear faces, first and second sidewalls, a top surface extending between upper ends of the front and rear faces, and a bottom surface extending between lower ends of the front and rear faces. A stepped cavity is formed in the top surface of the engineered block. The stepped cavity is located adjacent the front face of the engineered block and includes a first step having a first horizontal, and a shallower second step, adjacent the first step, having a second horizontal surface. A mounting device adapted to receive a light fixture is seated within the stepped cavity. The mounting device has a flat plate seated upon the second step and a storage compartment for wire seated upon the first step. A top planar surface of the flat plate is coplanar with the top surface of the engineered block.

Abstract: A configuration, all components of which are man portable in some embodiments, for holding panels to protect assets against external force and impacts from airborne projectiles. An open box-like stackable frame module holds panels along a side of the frame. Multiple frames are connected to construct a protective barrier, such as a wall. Frames include provisions for connection in a vertical configuration so as to allow stacking of the frames to increase the height of the barrier. A method of installing is also provided.

Abstract: In an anchor for use in a construction panel which includes upper and lower cover plates, wherein the anchor includes a cylinder body, a displacement body and a cement container provided with desired rupture locations and installed in the cylinder body and the cylinder body is provided with engagement elements for extending behind the upper cover plate, the cement container includes at least two chambers separated by an intermediate wall and is provided with an upper and a lower opening each closed by a thin-walled rupturable foil, with the intermediate wall being also rupturable by the displacement member upon movement thereof into the cylinder body.

Abstract: A wall anchor employing adhesives or other settable materials to strengthen the wall anchor, facilitating ease of use as well as extreme holding power. A method to attach a wall anchor to a panel, a method to remove a wall anchor from a panel, and a removal tool is also disclosed.

Abstract: Precise parameters are maintained in a support system for solar panels or other panel-like structures through use of a collapsible folding, support frame which is preassembled to precise tolerances at a convenient staging site before being collapsed for shipment. Installation on flat roofs is also facilitated through the use of a roof interface frame which rotatably supports the panel support frame of the support system and folds along with it at the assembly, staging site.

Abstract: A mast is erected to support a load. At least one stay cable supports the mast. The stay cable has an end and an opposite end. The end of the stay cable attaches to an upper region of the mast. The opposite end of the stay cable anchors at earth. The stay cable is oriented at an angle not exceeding ten degrees.

Abstract: A fluid containment and dispensing system having a RFID tag associated therewith. The fluid containment and dispensing system includes a fluid containment drum having an opening defined thereon. The fluid containment and dispensing system further includes a dispensing mechanism operably coupleable with the opening, the dispensing mechanism configured to dispense the contents of the fluid containment drum. An identification tag is coupleable with the dispensing mechanism and includes a first laminate, a second laminate laminated to the first laminate, and a RFID member disposed between the first and second laminates, wherein the RFID member includes information associated with a fluid containment and dispensing system.

Abstract: A process and system reprocesses soiled animal bedding material commingled with animal manure. The material is to remove a preponderance of the manure. The remaining soiled bedding is washed in water and a cleaning agent, rinsed and, optionally, bleached to restore color and appearance. The resulting material is dewatered and dried to reduce its moisture content and kill any remaining pathogens. After being cleaned and sanitized, the material may be reused as bedding or further processed into pellets or other products, such as manufactured fire logs.

Abstract: The method for grouping stackable products arriving in line on a feed conveyor which has an accumulation function and a distribution function of the products, distribution being carried out sequentially to feed a supply conveyor which makes the products available so that they can be collected, the method including collecting the products distributed on the supply conveyor by a transversal collector which is mobile in a vertical plane, depositing the collected products on a take-up station which is located above the level of the supply conveyor and providing the collector with a loop movement, cyclical, in order to collect the products, deposit them and return to the point of departure.

Abstract: A packaging device for packing stacked soft hygienic products, e.g. sanitary napkins, panty liners or the like, into a plastic bag made of an endless film, has specific forming shoulder (21) and MD sealing unit (5) to produce a MD seal (35) at a closure edge (46) of the bag. Thus four integral side panels are available at the bag (WB) for imprinting.

Abstract: An engine comprises a tank of compressed air and a piston. The tank of compressed air is connected to a conduit and the conduit is connected to a cylinder comprising a first valve and an inlet to a chamber. The chamber comprises the piston, which reciprocates. The chamber also has a second outlet connected to a second valve. The air traverses from the tank of compressed into the chamber by opening the first valve. Both the first valve and second valve are closed and the compressed air moves the piston in the chamber to produce work. The second valve opens and the air escapes from the chamber and the piston.

Abstract: A combination edger and trimmer is for mounting on a riding lawn mower's deck. The edger/trimmer comprises a deck mount plate, an intermediate plate and a motor mount plate. The three plates are offset from one another with the intermediate plate hingeably attached to the deck mount plate and also to the motor mount plate. An electric motor with a cutting head is attached to the motor mount plate. The edger/trimmer is positioned in rest, edging, or trimming positions by manually moving the plates about their hinge points.

Abstract: In one embodiment of a stalk roll to be mounted upon a stalk roll drive shaft of a corn harvesting header, the stalk roll comprises a cylindrical shell, at least four flutes affixed to and extending radially from said cylindrical shell, wherein the flutes are arranged in a first group and a second group, wherein the first group and the second group contain an equal number of said flutes, and wherein a peripheral distance between the first group and the second group is greater than a peripheral distance between the flutes within either the first group or the second group.

Abstract: A mowing finger arrangement has a lower element (4) and an upper element (3). The lower (4) and upper (3) elements are connected to each other and form two mowing fingers (1, 2) and a blade gap (15). The blade gap (15) guides a mowing sickle between the lower element (4) and the upper element (3). The lower element (4) forms lower counter cutting edges (20, 21). The upper element (3) forms upper counter cutting edges (22, 23) for the mowing sickle. The two mowing fingers (1, 2) are connected to each other via a rear (26) and a front (29) connection web on the upper element (3) and via a rear (35) and a front (34) connection web on the lower element (4). The two front connection webs (29, 34) of the lower element (4) and the upper element (3) define part of the blade gap (15).

Abstract: A walk-behind lawn mower includes a cutter and a housing covering the cutter for allowing rotation of the cutter to cut grass. The housing includes a front wall portion covering a front part of the cutter and a portion other than the front wall portion. The front wall portion extends laterally of the housing. The front wall portion has a thickness more than twice a thickness of the portion other than the front wall portion. The front wall portion has a downwardly convex bottom surface, and serves as a handle for use in lifting up the lawn mower.

Abstract: A baling apparatus for towing behind a combine, said baling apparatus comprising a tongue to enable said towing, said baling apparatus defining a target for receiving at least a portion of material discharged directly from the combine across a gap extending the distance from a rear of the combine to a front of said baling apparatus to impact on said target of said baling apparatus through an opening defined by forward frame members and a cross member connected to the tongue rather than impacting the ground.

Abstract: In an example embodiment, a continuous baler includes a round baler and an adjustable conveyor for providing crop to the round baler. The adjustable conveyor may include a conveyor belt and a controller for manipulating the conveyor belts. In one example embodiment, the speed of the conveyor is adjusted in accordance with the operation of the baler.

Abstract: An air spinning device has a nozzle body and a hollow spindle with a spindle tip and a longitudinal axis, wherein the spindle tip protrudes into the nozzle body. An outlet channel having a ring-shaped cross-sectional area is formed between an outside surface of the spindle tip and an inside surface of the nozzle body. The gap width at a certain location of the outlet channel normal to the longitudinal axis of the spindle is constant over the circumference of the spindle. The outside surface of the spindle tip and/or the inside surface of the nozzle body is/are shaped in such a way that at least two constrictions are formed in the outlet channel in its course in the direction of the longitudinal axis of the spindle, wherein the outlet channel has a ring-shaped cross-sectional area at each of these constrictions smaller than the ring-shaped cross-sectional area of the outlet channel upstream and downstream from each of these constrictions.

Abstract: A turbomachine comprises a turbine shaft, first and second rotors, first and second propulsion stages, and a magnetic stator. The first rotor is rotationally coupled to the turbine shaft, and coaxially arranged along an axis. The first propulsion stage is rotationally coupled to the first rotor, opposite the turbine shaft. The second rotor is coaxially arranged about the first rotor, and the second propulsion stage is rotationally coupled to second rotor, opposite the turbine shaft and adjacent the first propulsion stage. The magnetic stator is coaxially arranged between the first rotor and the second rotor, forming a magnetic coupling between the and second rotors to drive the second propulsion stage in contra-rotation with respect to the first propulsion stage.

Abstract: This actuator for an aircraft engine nacelle mobile structure (9) comprises a motor (1) intended to be mounted on a fixed part of the said nacelle, an endless screw (21) able to be turned by this motor (1), a slideway (5) intended to be connected to the said mobile structure (9) and comprising a nut (29) in mesh with the said endless screw, and a first ball end (15) allowing an angular offset between the axis of the said endless screw (21) and the said slideway (5). This actuator is notable in that it comprises a sleeve (19) able to accommodate the said screw (21) and extending with clearance inside the said slideway (5), the said nut (29) being mounted on that end of the said sleeve (19) that is closest to the said motor (1), and the said first ball end being interposed between the other end of the said sleeve (19) and the said slideway (5).

Abstract: A system comprises a fuel system for delivering fuel to an engine for combustion and a reductant storage system for delivering reductant to the exhaust stream for an SCR catalyst for NOx reduction. The fuel system further comprises a water separator for separating water-based fluid from fuel in the fuel tank, and a separation reservoir to collect the separated water-based fluid. Based on readings of a water-in-fuel sensor positioned within the reservoir, a type of degradation (e.g., water build-up, high-water-content fuel, mis-filling of the reductant, etc.) may be determined and indicated.

Abstract: A method for regenerating a particulate filter is disclosed. In one example, oxygen is pumped from the intake system of a direct injection turobocharged gasoline engine through a cylinder and into the exhaust system by a compressor. In this way, regeneration of a particulate filter may be accomplished without an auxiliary air supply.

Abstract: An ammonia burning internal combustion engine in which, in addition to ammonia, a reformed gas reformed at a reformer is fed into a combustion chamber. When a reforming ability of the reformer is less than a predetermined reforming ability, an ammonia ratio is increased to a ratio more than the ammonia ratio after completion of engine warmup set in advance in accordance with an operation state of the engine, and secondary air is fed from a secondary air feeding device into an engine exhaust passage upstream of an exhaust purification catalyst.

Abstract: An exhaust gas treatment device includes an inlet housing having an inlet opening for receipt of an exhaust flow from an engine aligned along a first axis. A main housing includes a cylindrical body portion defining a treatment zone and an exhaust outlet aligned along a second axis extending parallel to the first axis. The inlet housing is in fluid communication with and fixed to an outer surface of the main housing. The inlet housing includes a contoured wall including an end portion positioned opposite the inlet opening, an aperture extending through the wall transverse to the first axis, divergent side wall portions on opposite sides of the inlet opening, and a necked portion having a reduced cross-section positioned downstream of the inlet opening and upstream of the aperture. A component is coupled to the main housing for treating exhaust flowing through the treatment zone.

Abstract: Method to reduce NOx contained in an exhaust gas by including an oxidation catalyst device and a selective reduction type NOx catalyst device, which are arranged in this order from an upstream side, and a NOx purification system. Whether a volume of NO2 adsorbed in the oxidation catalyst device increases or decreases is estimated, and a flow rate of exhaust gas which bypasses the oxidation catalyst device on a basis of the increase or decrease in the estimated volume of adsorbed NO2 is controlled. This avoids incorrect supply of ammonia.

Abstract: An engine system includes an engine with a secondary air source, a fuel system that communicates with the engine, and a controller that communicates with the fuel system. The controller controls a first quantity of liquid fuel to the engine at a first A/F ratio and a second quantity of vapor fuel to the engine at a second A/F ratio. The liquid and vapor fuel mixture has a third A/F ratio. A secondary air source provides additional air to the third A/F ratio. The controller determines an available A/F ratio of vapor fuel within the fuel tank and performs a comparison with a target A/F ratio range. The second quantity is set to zero if the A/F ratio of the vapor fuel is outside of the target A/F ratio range. The controller adjusts the first and second quantities based on a comparison between an exhaust A/F ratio and a target exhaust A/F ratio.

Abstract: A secondary air system for the supply of secondary air into at least one exhaust gas outlet passage of a cylinder head of an internal combustion engine, wherein at least one secondary air passage provided in the cylinder head is associated with the exhaust gas outlet passage and opens into the exhaust gas outlet passage and into an outer connection surface of the cylinder head. A base plate is provided which can be placed onto the connection surface of the cylinder head and which is provided with secondary air stubs which each engage into a secondary air passage when the base plate is in place. The base plate is provided on its outer side remote from the connection side with at least one hood via which the supplied secondary air is distributed to a plurality of secondary air stubs.

Abstract: Termination of regeneration of a particulate filter may be based on a variable percent threshold of stored particulate, where the percent threshold of stored particulate depends on a current soot burn rate. In one example approach, a method for controlling regeneration of a diesel particulate filter comprises: terminating regeneration based on a particulate burning rate; wherein the particulate burning rate is based on operating conditions of the diesel particulate filter; the operating conditions including an amount of stored particulate in the diesel particulate filter and a temperature of the diesel particulate filter.

Abstract: A method and apparatus for maintaining a diesel particulate filter (DPF) is provided. A pressure drop across the DPF is measured and an initial estimate of soot loading in the DPF is provided to a recursive filter. Using the recursive filter, the initial estimate of soot loading is updated in view of the measured pressure drop to provide an updated estimate of soot loading in the DPF. Active regeneration of the DPF is triggered when an earliest one of at least one triggering condition occurs, the updated estimate of soot loading reaching a predetermined value being one of the at least one triggering condition.

Abstract: An exhaust passage of an internal combustion engine is provided with an upstream side three-way catalyst capable of purifying exhaust gas and a particulate filter (PM filter) for trapping particulate matter PM contained in exhaust gas. Catalyst warm-up control is exercised for the purpose of warming up mainly the upstream side three-way catalyst at cold start. Filter regeneration control for removing the particulate matter PM accumulating on the particulate filter from the filter is exercised at the cold start after the catalyst warm-up control is exercised.

Abstract: A regeneration system includes a particulate matter (PM) filter. The PM filter has an upstream end that receives an exhaust gas from an engine. An air pump circuit directs ambient air to a first exhaust conduit upstream from the PM filter. A control module determines a current soot loading level of the PM filter. The control module also at least one of operates the engine in a rich mode and activates an air pump of the air pump circuit when the current soot loading level is greater than a predetermined soot loading level.

Abstract: A system for trapping liquid exhaust during a cold start of an internal combustion engine is provided. As one example, a system includes, an exhaust inlet, an exchange area fluidly coupled downstream of said exhaust inlet, a trap coupled to said exchange area having a liquid exhaust chamber for collection of liquid exhaust, and a catalytic converter fluidly coupled downstream to said exchange area. In another example, a method includes condensing, at least partly, exhaust from the engine in an exchange area in an exhaust system into liquid exhaust, collecting liquid exhaust into a trap disposed in the exchange area, and evaporating the liquid exhaust into the exchange area after an evaporation temperature is reached in the trap.

Abstract: Systems and methods for recovering power fluid used to power a device under water and for pumping the recovered power fluid to a fluid container above a surface of the water, the method in certain aspects including: flowing fluid from a subsurface apparatus to a subsurface recovery system, the fluid initially provided to the subsurface apparatus to power the subsurface apparatus; and the subsurface recovery system including a pump system for selectively pumping recovered power fluid to a fluid container above a surface of the water, the pump system having at least one pump and, in some aspects, a first pump, a second pump, and a valve system; the valve system controlling the first pump and the second pump to allow only one pump of the first pump and the second pump to pump recovered power fluid to the fluid container above the surface of the water; and pumping recovered power fluid to the fluid container with only one pump at a time.

Abstract: A hydraulic load ramping system, in certain aspects, may utilize load sensing feedback from an engine, thereby reducing the possibility of overloading the engine as well as smoothing the transition between hydraulic load levels. In particular, by ramping between hydraulic load levels, unwanted movement of hydraulically-driven equipment may be minimized. In addition, by efficiently monitoring the load sensing feedback and ramping between hydraulic load levels, the hydraulic output may be maximized.

Abstract: A float structure for a WEC is designed to have a tapered underside to reduce the impact due to wave slam and bending moments while providing little reduction in the surface area responding to the wave surface in order to maintain the beneficial power generating capability of a “flat” float. The underside of the float presents an inverted wedge section to decrease loads associated with wave slamming. The float may have a generally toroidal or elliptical configuration at and about the “still” water line with the generally submerged underside of the float having a cross section shaped to have one or more inverted triangular sections extending between the outer perimeter of the float and its center to reduce impact loading due to wave slamming while maintaining power producing capability.

Abstract: A variable-nozzle turbocharger includes a turbine housing and a center housing, and a generally annular nozzle ring and an array of vanes rotatably mounted to the nozzle ring such that the vanes are rotatably adjustable for regulating exhaust gas flow to the turbine wheel. An elastically deformable member is disposed between a radially inwardly facing surface of the nozzle ring and a radially outwardly facing surface of the center housing, the elastically deformable member having a radially inner surface contacting the radially outwardly facing surface of the center housing and having a radially outer surface contacting the radially inwardly facing surface of the nozzle ring so as to radially center the nozzle ring relative to the center housing.

Abstract: A method of operating a turbocharged engine having cylinders in which one of the cylinders undergoes a compression stroke. The method includes advancing an ignition spark in the one of the cylinders undergoing the compression stroke by a first amount relative to top dead center of the compression stroke at a first barometric pressure for a given engine speed and load, and advancing the ignition spark in the one of the cylinders undergoing the compression stroke by a second, lesser amount relative to top dead center of the compression stroke at a second, lower barometric pressure, for the given engine speed and load as the vehicle being at different altitudes.

Abstract: A control system manages and optimizes a geothermal electric generation system from one or more wells that individually produce heat. The control system includes heat sensors that measure temperature and fluid flow and are placed at critical points in the wells, in piping, in a hot fluid reservoir, in a cold fluid reservoir and in a cooling system. The control system also includes pump and valve controls, generator controls, a network for gathering information and delivering instructions, and a processing module that collects information and communicates control information to each component.

Abstract: The inventive method for converting thermal energy into electricity, high-potential heat and cold consists in evaporating a coolant from a strong solution at a high temperature and pressure in a boiler in such a way that a superheated vapor and a weak solution thereof are formed, in reducing the temperature and pressure of the coolant and solution associated with the interaction thereof with external consumers (sources) of energy, in absorbing the low-temperature coolant in the weak solution in an absorber, in subsequently compressing the strong solution, which is formed during the absorption, by a pump, in heating said solution in a regenerator and in supplying it to evaporation. Prior to absorption, the weak solution is overcooled in a cooler using low-temperature energy sources. A turbine with a generator or a condenser, a control valve and an evaporator are used as a unit for interacting the coolant with energy consumers.

Abstract: Power generation systems and methods are disclosed for use with medium to high temperature heat source stream, gaseous or liquid, where the systems and methods permit efficient energy extraction for medium and small scale power plants.

Abstract: The technology combines a secondarily-fueled boiler with a primary-fueled Rankine steam cycle combustion system in a hybrid process. Outputs from a secondarily-fueled combustion system are fed into the feedwater heater(s), deaerators, feedwater heating lines, and/or reheat lines of a primary-fueled Rankine system. The integrated steam flow eliminates or reduces one or more extractions from the steam turbine generator, thereby allowing it to generate more electrical power using the same Rankine system input energy or generate equivalent electrical power using energy inputs from multiple fuel sources. The technology can be utilized in any type and/or configuration of secondary fuel or secondarily-fueled combustion technology and/or can utilize any type of primary-fueled steam source.

Abstract: A nitrogen pressure-based engine device featuring a main engine chamber with a turbine blade system; a liquid nitrogen storage tank; a heater/vaporizer chamber for converting liquid nitrogen to gas nitrogen fluidly connected to the storage tank and to the nozzle block of the main engine chamber; a pressure condenser for condensing gas nitrogen to liquid nitrogen fluidly connected to the main engine chamber and to the storage tank; wherein liquid nitrogen flows from the storage tank to heater/vaporizer chamber then gas nitrogen flows to the main engine chamber via the nozzle block, the gas nitrogen drives rotation of the turbine blade system, the gas nitrogen then flows to the pressure condenser to be condensed to liquid nitrogen, the liquid nitrogen then flows from the pressure condenser to the storage tank.

Abstract: Systems, methods, and apparatus relating to the use of phase change material to store, transfer and convert heat, such as from solar radiation, to mechanical work or electricity. Apparatus, systems, components, and methods relating to thermal energy transfer and energy conversion are described herein. In one aspect, the invention relates to a containment vessel having a heat receiving region and a heat transfer region such that a plurality of phase change materials are disposed therein and a sequence of solid, liquid and vapor phases are used to transfer heat from a source to a heat receiver of a power conversion unit.

Abstract: A gas turbine combustion chamber is provided. The gas turbine includes a combustion chamber interior and a combustion chamber wall which has a substantially rotationally symmetrical cross-section, wherein on the side of the combustion chamber wall facing away from the combustion chamber interior there is arranged over the entire cross-sectional circumference of the combustion chamber wall a corrugated component which, in combination with the combustion chamber wall, embodies a plurality of separate resonance chambers and wherein openings are incorporated in the combustion chamber wall in such a way that a fluidic connection is established in each case between the combustion chamber interior and one of the resonance chambers and wherein the corrugated component has two locking rings which are connected to the combustion chamber wall in order to seal off the resonance chambers.

Abstract: A nozzle for a combustor is disclosed. The nozzle includes a center body, a burner tube provided around the center body and defining a fuel-air mixing passage therebetween, and an outer peripheral wall provided around the burner tube and defining an air flow passage therebetween. The nozzle further includes a nozzle tip connected to the center body. The nozzle tip includes a pilot fuel passage configured to deliver a flow of pilot fuel to a combustion zone, and a plurality of transfer passages. The plurality of transfer passages are configured to deliver a flow of air for combustion with the flow of pilot fuel in the combustion zone and further configured to deliver a flow of transfer fuel to the combustion zone.

Abstract: A trapped vortex combustor includes a trapped vortex cavity having a first surface and a second surface. A plurality of fluidic mixers are disposed circumferentially along the first surface and the second surface of the trapped vortex cavity. At least one fluidic mixer includes a first open end receiving a first fluid stream, a coanda profile in the proximity of the first open end, a fuel plenum to discharge a fuel stream over the coanda profile, and a second open end for receiving the mixture of the first fluid stream and the fuel stream and discharging the mixture of the first fluid stream and the fuel stream in the trapped vortex cavity. The coanda profile is configured to enable attachment of the fuel stream to the coanda profile to form a boundary layer of the fuel stream and, to entrain the incoming first fluid stream to the boundary layer of the fuel stream to form a mixture of the first fluid stream and the fuel stream.

Abstract: A nozzle assembly (10) comprising a first inlet tube (14), a second inlet tube (15), and a nozzle (16). The nozzle (16) is formed from a stack of plates (20-38) which are joined together in face-to-face contact. The plates (20-38) collectively have openings which define a nozzle outlet, a first inlet, a second inlet, a first circuit from the first inlet to the nozzle outlet, a second circuit from the second inlet to the nozzle outlet, and a fluid-outlet chamber through which both the first circuit and the second circuit pass. The nozzle assembly (10) can be used as a fuel injector for a gas turbine engine, with jet fuel being supplied to the first circuit during start-up and low power conditions and jet fuel being supplied to both the first circuit and the second circuit during high power conditions.