Abstract: A polymer mesh for skin control in hard rock mining conditions is provided. The polymer mesh is manufactured using a knitted or woven design that further includes one or more pairs of solid cut-resistant bands. The bands are positioned in pairs, each band in a pair having a width of at least about 2.5? and being generally parallel with the other band. The bands are spaced from one another at a distance of between about 1.5? and about 4? to create a reinforced aperture between the bands. One or more reinforcement bolts are installed within the aperture with the bands on opposing sides of each bolt buffering the edges of the steel plates associated with the bolts to prevent the plates from tearing the polymer mesh.

Abstract: A pulsation-free wet spraying machine resolves the issue of pulsing during pumping of a concrete spraying machine The wet spraying machine includes a frame, a pumping mechanism, a swing mechanism and a hydraulic system, wherein the pumping mechanism includes a hopper, a material chamber, a concrete feeding mechanism, an auxiliary feeding mechanism and a distribution valve. The hopper of the pumping mechanism is disposed above the material chamber. The distribution valve is disposed inside the material chamber, the concrete feeding mechanism and the auxiliary feeding mechanism both include a hydraulic cylinder, a concrete piston and a concrete cylinder, a discharge pipe is a three-way pipe fixed at a side surface of the material chamber, an auxiliary discharge pipe of the discharge pipe is connected with an auxiliary concrete cylinder, and a through hole is disposed on the auxiliary concrete cylinder.

Abstract: A rotary manifold for a rotor assembly of a cohesion-type drive includes a manifold body extending along a drive axis for rotation thereabout, a first ductwork internal the body for fluid communication with a plurality of first chambers of the drive, and a second ductwork internal the body for fluid communication with a plurality of second chambers of the drive. The second ductwork is in fluid isolation of the first ductwork.

Abstract: A fan for a climate control outdoor unit includes a plurality of airfoils located around a central hub. Each of the airfoils includes a leading edge and a trailing edge opposite the leading edge. A pressure side surface extends between the leading edge and the trailing edge. A suction side surface is opposite the pressure side surface and extends between the leading edge and the trailing edge. The leading edge includes a greatest negative deviation from a radial line of greater than 10% of a span of the airfoil. The greatest negative deviation is located at between 45% and 85% of the span of the airfoil.

Abstract: An airfoil for a gas turbine engine according to an example of the present disclosure includes, among other things, an airfoil body extending between leading and trailing edges in a chordwise direction and extending from a root section in a spanwise direction, and the airfoil body defining pressure and suction sides separated in a thickness direction. The airfoil body defines a recessed region extending inwardly from at least one of the pressure and suction sides, and the airfoil body includes one or more ribs that define a plurality of pockets within a perimeter of the recessed region. A plurality of cover skins is welded to the airfoil body along the one or more ribs to enclose respective ones of the plurality of pockets. The plurality of cover skins formed from a common cover having a perimeter that is dimensioned to mate with the perimeter of the recess. A method of forming a gas turbine engine component is also disclosed.

Abstract: A shroud for a turbine blade includes a shroud body having an outer side and opposite first and second Z-shaped side edges; a first sealing fin and a second sealing fin extending outwardly from the outer side and spaced apart from each other in a streamwise direction, the first and second sealing fins extending between the first and second side edges of the shroud body; a first ridge extending radially outwardly from the outer side, the first ridge extending from and connecting the first and second sealing fins along the first side edge and having a radial height which varies; and a second ridge extending radially outwardly from the outer side, the second ridge extending from and connecting the first and second sealing fins along the second side edge and having a radial height which varies.

Abstract: A fan platform includes a platform body that has gaspath and non-gaspath sides, leading and trailing ends, first and second circumferential sides that are contoured to follow profiles of adjacent fan blades, and lugs that project from the non-gaspath side and define fastener openings. The platform body includes a core and a fiber-reinforced polymer matrix composite skin attached on the core at least on portions of the gaspath and non-gaspath sides.

Abstract: A fan includes a hub and a plurality of fan blades. The hub has an axle center. The fan blades are disposed around the hub. Each of the fan blades has a bent portion, and the bent portions of the fan blades are extended along a surrounding direction surrounding the axle center. The hub is welded with the bent portion of each of the fan blades along the surrounding direction. As a result, the number of fan blades is maximized, the strength is simultaneously ensured to be enough, and the advantages of effectively enhancing the fan characteristics are achieved.

Abstract: A rotor disk assembly for a gas turbine engine includes a rotor disk with a multiple of blade slots, the rotor disk defined about an axis; a sleeve received within each of the multiple of blade slots; and a ceramic matrix composite rotor blade received within each of the multiple of sleeves.

Abstract: A flow-straightener vane of a bypass turbomachine includes a plurality of vane sections stacked radially with respect to a longitudinal axis (X) along a stacking line (L) between a root end and a tip end. Each vane section has a pressure-face surface and a suction-face surface extending axially between an upstream leading edge and a downstream trailing edge. Between the leading and trailing edges of each vane section there is formed a profile chord (CA) the length of which is substantially constant between the tip end and the root end, and the stacking line (L) exhibits a curvature in a plane passing more or less through the axis (X) and through the stacking line (L), situated in the vicinity of the tip end and oriented from downstream towards upstream.

Abstract: A seal arrangement for a turbine stage includes a vane assembly including radially inner and outer vane platforms and an airfoil. The seal arrangement further includes a rim seal feature including forward and aft rim seal legs extending radially inward from a radially inward surface of the radially inner vane platform. An impingement plate covers the radially inward facing surface of the radially inner vane platform and extends axially aft up to the aft rim seal leg. A rim seal containment structure is located radially inward of the impingement plate and extends axially over the aft portion of the radially inner vane platform up to the aft rim seal leg. A cooling cavity is defined between the rim seal containment structure and the impingement plate and extends axially aft up to the aft rim seal leg to provide cooling to an aft portion of the radially inner vane platform.

Abstract: Turbomachine modules, for example for an aircraft, include a turbine nozzle having several sectors (S), each sector having guide vanes extending between inner and outer platform elements, at least one of the platform elements of each sector carrying, on the one hand, at least one sealing blade configured to ensure fluid sealing between the platform element and the adjacent structural element, and, on the other hand, a device configured to hold the at least one sealing blade in a sealing position. The device includes a leaf spring having a middle portion fixed to the platform element, and opposite end portions which are supported on the sealing blade carried by the platform element.

Abstract: A turbine ring assembly includes ring sectors forming a turbine ring and a ring support structure, each sector having, along a cutting plane defined by an axial direction and a radial direction of the ring, a portion forming an annular base with, in the radial direction, an inner face and an outer face from which a first and a second lug protrude, the structure including a shroud from which protrude a first and a second radial clamp from which the first and second lugs are held. The turbine ring includes an annular flange having a first portion bearing against the first lug, and a second portion removably fixed to the first radial clamp, the first portion including radial slits open on a free end of the annular flange and delimiting first-portion sectors.

Abstract: A gas turbine engine assembly includes a first component, a second component, and a seal. The first component is spaced apart from the second component to form a gap between the first component and the second component. The seal is configured to block gases from flowing in the gap between the first component and the second component.

Abstract: A clearance control system for a gas turbine engine may include a rotor blade, an outer structure disposed radially outward from the rotor blade, a heating element, a hybrid electric power source, and a controller. The heating element is configured to cause the outer structure to be heated in response to electric current being supplied to the heating element. A gap between the rotor blade and the outer structure is at least one of increased, decreased, and maintained in response to the outer structure being heated. The hybrid electric power source is configured to supply the electric current to the heating element. The controller is configured to regulate the electric current being supplied to the heating element.

Abstract: A washing tool for washing the engine core of a gas turbine engine. The washing tool has: a fluid connector, configured to be connected to a supply of engine washing fluid; at least one nozzle, in fluid communication with the fluid connector and configured to direct the engine washing fluid into the engine core of the gas turbine engine; a fan blade fixture, configured to engage with a fan blade of the gas turbine engine and fix the position of the washing tool relative to the fan blade; and a second fixture, configured to engage with a part of the gas turbine engine that does not rotate about the axis of the gas turbine engine and fix the position of the washing tool relative to said part of the gas turbine engine. A washing system, a waste water collection system, a method of washing an engine core of a gas turbine engine, and a gas turbine engine, are also described.

Abstract: Turbines and associated equipment are normally cleaned via water or chemical pressure washing via a mist, spray systems. However, these systems fail to reach deep across the gas path to remove fouling materials. Various embodiments herein pertain to apparatus and methods that utilize the water and existing chemicals to generate a foam. The foam can be introduced at that gas-path entrance of the equipment, where it contacts the stages and internal surfaces, to contact, scrub, carry, and remove fouling away from equipment to restore performance. Various embodiments pertain to spout assemblies for providing foam to the compressor of commercial fan engines, and in yet other embodiments to engines receiving air from a long inlet duct, especially those having a serpentine inlet ducts.

Abstract: A casing which surrounds a housing of the turbocharger has a first casing body, which emanating from a first side of the housing can be pushed onto the housing in an axial direction. The first casing body has an axial casing segment adjoining the housing adjoining the first side axially outside, and multiple casing segments adjoining the housing radially outside. A second casing body can be pushed onto the housing in the axial direction has an axial casing segment adjoining the housing adjoining a second side axially outside, and a radial casing segment, which adjoins the housing radially outside, covers the first casing body radially outside in sections and is connected to the first casing body. Multiple supports each has first sections, via which the respective support can be mounted to the housing. Each support has second sections), via which the first casing body is mounted to the respective support.

Abstract: A retention member is configured to be supported within a cylinder head of an engine and includes a body portion and a plurality of arms. The body portion has an opening configured to receive a fuel injector of the engine. Additionally, the plurality of arms extends from the body portion and is configured to be positioned over a portion of a cross-head of the engine. The plurality of arms is spaced apart from the cross-head during routine operation of the engine.

Abstract: A valve timing system including a crankshaft drive gear coupled to the crankshaft in working communication with a crankshaft connecting rod gear further including a primary connecting rod disc with a first-journal, the first-journal configured to receive at least two connecting rods at respective first-rod-ends in a side-by-side orientation and each connecting rod is coupled to a respective one of the intake disc and the exhaust disc via an intake-journal and an exhaust-journal, respectively. At least two secondary connecting rod discs are coupled to at least two plate-shaft drive gears to drive at least two plate-shaft-gears, the two plate-shaft-gears are connected to the two plate-shafts, respectively. At least two plate-shafts are coupled to an intake cam-groove plate and an exhaust cam-groove plate, the intake cam-groove plate and the exhaust cam-groove plate cammingly-manipulate the intake valve stem connector and the exhaust valve connector to drive each valve assembly.

Abstract: A hybrid dual phaser assembly is disclosed for mounting to an engine camshaft to allow the timing of two sets of cam lobes to be phased independently of one another relative to a crankshaft of the engine. The phaser assembly comprises an electrically operated phaser having intermeshing gears for transmitting torque to the camshaft and a phase control input driven by an electric motor to be mounted coaxially with the camshaft, and a hydraulically operated phaser having vanes movable within arcuate cavities. The cavities of the hydraulically operated phaser are defined in part by an annular member that radially surrounds, and axially overlaps, a gear of the electrically operated phaser, which gear is separate from the annular member and forms radially inner boundary walls of the cavities.

Abstract: An actuating device for a camshaft timing apparatus, having a movable actuating member being supported displaceable along a translational axis, and a force generator for generating a force driving the actuating member along the translational axis, wherein the actuating member is supported rotatable about a rotational axis and wherein the actuating device comprises a torque generator for subjecting the actuating member to a torque about the rotational axis.

Abstract: The present invention refers to a charge changing control device for a reciprocating engine, comprising at least one cam follower configured for being pivotably actuated around a pivot axis (P) upon rotational movement of a camshaft, and an adjustment unit configured for setting at least three different charge-changing modes of the device by translationally displacing the pivot axis relative (P) to a rotational axis (R) of the camshaft.

Abstract: A valvetrain for an internal combustion engine has a camshaft that can be rotated in a direction of rotation around an axis of rotation, at least two cam pieces arranged on the camshaft which each have at least two cams for actuating a respective gas exchange valve and which are rotationally fixedly connected to the camshaft, and an actuator via which the cam pieces can be shifted in the axial direction of the camshaft. A first of the cam pieces has a first rib protruding outwardly from a first base body of the first cam piece in the radial direction of the camshaft and the second cam piece has a second rib protruding outwardly from a second base body of the second cam piece in the radial direction of the camshaft.

Abstract: An air introduction hole having an aperture area smaller than that of an oil inlet is formed above the oil inlet, and therefore, when the oil level of oil accumulated in an oil pan inclines during traveling, air is sucked in through the air introduction hole, thereby restraining a decrease in hydraulic pressure of the oil. Further, the air introduction hole is formed behind the oil inlet in the vehicle front-rear direction in a vehicle. Accordingly, during heavy load traveling such as hill-climbing traveling, the air introduction hole sinks in the oil, thereby restraining the air from being sucked in through the air introduction hole. Accordingly, no air is sucked into an oil strainer, thereby making it possible to obtain high hydraulic pressure during heavy load traveling.

Abstract: A sound generating device for a vehicle exhaust system of a motor vehicle includes a housing and a sound generator arranged within the housing. The housing has an upper part, a lower part, and a plug connection for at least one control cable for the sound generator. The plug connection is arranged between the upper part and the lower part. Furthermore, a vehicle exhaust system and a method of manufacturing a sound generating device are disclosed.

Abstract: Methods and systems are provided for depositing one or more layers of ash on a surface of a new or cleaned gasoline particulate filter (GPF) prior to installation of the GPF in an engine and first use of the GPF. In one example, a method may include coating the GPF with the one or more layers of ash via an atomic layer deposition (ALD) technique in which two precursors react to form a layer of ash on the GPF surface.

Abstract: The present invention relates to an exhaust gas purification apparatus and an exhaust gas purification method using the same. According to a specific embodiment., the exhaust gas purification apparatus comprises: a diesel oxidation catalyst (DOC) unit for convening nitrogen oxides (NO8), contained in an exhaust gas introduced therein through a gas inlet portion, into nitrogen dioxide (NO2); a composite diesel particulate filter (DPF) unit connected to the rear end of the DOC unit through an inflow line and removing harmful components including particulate substances and nitrogen oxides from the exhaust gas discharged from the DOC unit and introduced therein; and a circulation line disposed in the inflow line so as to introduce the exhaust gas discharged from the DOC unit into the gas inlet portion.

Abstract: An injector includes an injector body having an upper portion defining a top surface. An injector core is received through the upper portion. The injector core has an interfacing surface that is disposed adjacent and raised with respect to the top surface. A cover member is disposed on the upper portion of the injector body. The cover member has a top wall for receiving at least a portion of the injector core, a side wall extending from at least a portion of the top wall, and a lip that is adapted to be attached to the other of the side wall or the injector body through a snap-fit connection. Upon attachment of the lip to the other of the side wall or the injector body, the top wall of the cover member presses on the interfacing surface of the injector core to restrict an axial movement of the injector core relative to the injector body along the longitudinal axis.

Abstract: A device for supplying a liquid at risk of freezing to the combustion chambers of an internal combustion engine, in particular an internal combustion engine driving a motor vehicle, is designed to convey the liquid at risk of freezing at least from a section of a supply line, through which the liquid travels from a storage container to a supply unit to the internal combustion engine, back to the storage container. In addition, an aeration valve is provided near to the supply unit and branching off from the supply line, via which the supply line is connected to the environment in the open state.

Abstract: The present disclosure provides the exhaust gas purification catalyst with the improved purification performance under the high Ga condition and the atmosphere where the A/F is rich. The present disclosure relates to an exhaust gas purification catalyst including a catalyst coating layer on a substrate, the catalyst coating layer containing a noble metal and a metal oxide, wherein in the catalyst coating layer: an average thickness of the coating layer is in a range from 50 ?m to 100 ?m; a porosity measured by a weight-in-water method is in a range from 50% by volume to 80% by volume; and high-aspect-ratio pores having an aspect ratio of 5 or more account for 0.

Abstract: A method for the operation of a particulate filter in an exhaust aftertreatment system of a combustion engine (200) with the following steps: set up (111, 116) a pressure difference model, which models a measured pressure difference (?p) which drops across the particulate filter (210) as a function (220) of a volume flow ({dot over (V)}) through the particulate filter (210) with an offset value (a0, C); measure (120) multiple measurement values (245) for the pressure difference (?p) at different volume flows ({dot over (V)}) and solve (130) the pressure difference model as a function of the pressure difference (?p), whereby the offset value (a0, C) is also determined.

Abstract: The present invention is a method of determining emissions of vehicle pollutants using an on-board measurement system with a sensor (CAP) and a computer system including a generic model (MOD GEN) of the vehicle. The method is based on the use of the measurements and of the model for determining the amount of pollutants.

Abstract: Methods and systems are provided for a water jacket diverter. In one example, a water jacket diverter for a cylinder block is provided that includes a masking wall arranged above a rail and including a tuning section having a reduced thickness when compared to a remainder of the masking wall. The water jacket diverter also includes a tuning ledge adjacent to the masking wall and extending outward from the masking wall with regard to a cylinder bore axis.

Abstract: Embodiments of apparatus are disclosed for affecting working fluid flow in a system that delivers material between two locations by carrying the material in the working fluid. For example, embodiments of the disclosed apparatus may be used in an internal combustion engines to carry fuel droplets to a combustion area using air as the working fluid. The apparatus may include a passage including a funnel portion and tumble area that direct working fluid into a stratified stream. The stratified stream may include an outer boundary flow having a toroidal and/or helical flow characteristic and an inner flow carrying injected material that is bound by the outer flow.

Abstract: An engine system includes an internal combustion engine having an intake passage, a first set of combustion chambers, a second set of combustion chambers, a first exhaust passage fluidly connected to the first set of combustion chambers, and a second exhaust passage fluidly connected to the second set of combustion chambers. The engine system includes a first turbocharger including a first compressor and a first turbine. The engine system also includes a second turbocharger including a second compressor and a second turbine, the second compressor connected in series with the first compressor, and the second turbine being in fluid communication with the second exhaust passage. The first and second turbines are connected in parallel such that the first turbine only receives exhaust flow from the first set of combustion chambers, and the second turbine only receives exhaust flow from the second set of combustion chambers.

Abstract: The invention relates to a method for controlling a turbocharger system (10) fluidly connected to an exhaust manifold (102) of a combustion engine (100). The turbocharger system (10) comprises a turbocharger turbine (22) operable by exhaust gases from said exhaust manifold, and a tank (40) with pressurized gas, said tank being fluidly connectable to said turbocharger turbine. The method comprises the steps of: determining an engine operational mode in which the combustion engine runs below a predetermined speed, determining an external load requiring engine torque which at said engine operational mode would cause the combustion engine to stall, and subsequently injecting pressurized gas from said tank to drive said turbocharger turbine such that the turbocharger turbine is at least partly driven by said pressurized gas, thereby preventing stalling of the combustion engine.

Abstract: The invention relates to a control device for a turbocharger, comprising an exhaust gas conducting section through which fluid can flow and which includes a bypass duct for bypassing a turbine wheel that is rotatably arranged in the exhaust gas conducting section, and comprising an adjusting arm (3) for accommodating a valve element (2) provided for opening or blocking a flow cross-section of the bypass duct; the adjusting arm (3) is movably accommodated in the exhaust gas conducting section; furthermore, a flexible element (14) is provided at least for securing the valve element (2) in place on the adjusting arm (3). According to the invention, the flexible element (14) is designed to be retained radially and axially by the valve element (2).

Abstract: An engine includes an intake electric S-VT configured to change a rotational phase of an intake camshaft, an exhaust electric S-VT configured to change a rotational phase of an exhaust camshaft, a fuel pump, and a supercharger driven by the engine. Both the fuel pump and the supercharger are driven by power transmitted from a crankshaft. The power is transmitted to the fuel pump via a first drive mechanism, and the power is transmitted to the supercharger via a second drive mechanism whose system is different from a system of the first drive mechanism.

Abstract: The present invention provides an internal combustion engine that comprises at least one axial geometric cylinder axis and one axial geometric central axis, both geometric axes being orthogonal to one another; a first cylinder coaxial to the cylinder axis; a second cylinder coaxial to the cylinder axis provided opposite the first cylinder; a central body comprising a hole that is axially aligned with the central shaft, a first cylindrical recess and a second cylindrical recess configured to couple the second cylinder; a central drive shaft arranged in the hole of the central body; a first piston provided in the first cylinder, said first piston being connected to the central drive shaft by means of a first pair of connecting rods; and a second piston provided in the second cylinder opposite the first piston, said second piston being connected to the central drive shaft by means of a second pair of connecting rods.

Abstract: An apparatus for cleaning an intake system of an engine includes a pressure-resistant container having a reservoir chargable with an engine cleaner composition and a discharge orifice for discharging the engine cleaner composition from the reservoir. The apparatus also includes a dispensing assembly including an assembly inlet connectable to the discharge orifice of the pressure-resistant container for receiving the engine cleaner composition discharged from the pressure-resistant container. The dispensing assembly further includes an assembly outlet, and a length of tubing for receiving the engine cleaner composition from the dispensing assembly. The apparatus further includes a timer configured to control a timed valve that, when opened, allows the engine cleaner composition to discharge from the pressure-resistant container. The timer is configured to delay opening of the timed valve for a predetermined period of time after actuation of the timer.

Abstract: An aircraft power plant comprising novel air management features for high-power fuel cell applications, said features combine supercharging and turbocharging elements with air and hydrogen gas pathways, utilize novel airflow concepts and provide for much stronger integration of various fuel cell drive components.

Abstract: A turbo cluster gas turbine system includes: at least one combustor configured to combust a fuel to generate a combustion gas; an output turbine configured to be driven with the combustion gas from the at least one combustor; and a plurality of supercharging systems configured to supply compressed air to be supplied to the at least one combustor, wherein each of the supercharging systems includes: a first turbocharger having a rotation shaft formed separately from a rotation shaft of the output turbine and configured to be driven with the combustion gas from the combustor; a first air line for supplying compressed air compressed by a compressor of the first turbocharger to the combustor; and a first combustion gas line for supplying the combustion gas from the combustor to a turbine of the first turbocharger.

Abstract: An adaptive thermal management system for a gas turbine engine includes a heat exchanger transferring heat into a coolant, a temperature sensor measuring a temperature of the coolant, and a sensor assembly that measures a parameter of the coolant during operation of the gas turbine engine. The parameter measured by the sensor assembly is indicative of a capacity of the coolant to accept heat from the hot flow. A control valve governs a flow of coolant into the heat exchanger. A controller adjusts the control valve to communicate coolant to the heat exchanger based on a determined capacity of the coolant to accept heat in view of the measured temperature of the coolant and that the measured parameter of the coolant is within a predefined range.

Abstract: A hydraulic fracturing system for fracturing a subterranean formation is disclosed. In an embodiment, the system may include a plurality of electric pumps configured to pump fluid into a wellbore associated with a well at a high pressure; at least one turbine generator electrically coupled to the plurality of electric pumps so as to generate electricity for use by the plurality of electric pumps, each turbine generator having at least one air intake channel; and an air chiller system associated with the at least one turbine generator, the air chiller system comprising: a chiller unit configured to chill a fluid; and at least one coil in fluid communication with the chiller unit and positioned adjacent to the at least one air intake channel, wherein the air chiller system is configured to increase a power output of the at least one turbine generator.

Abstract: An example thermal management system may include a first heat exchanger including a bleed air inlet configured to receive input bleed air from a gas turbine engine and a bleed air outlet configured to output cooled bleed air. A turbine including a turbine inlet may be fluidically coupled to the bleed air outlet. The turbine may be configured to drive a shaft mechanically coupled to the turbine in response to expansion of the cooled bleed air through the turbine. A second heat exchanger may include an expanded bleed air inlet fluidically coupled to a turbine outlet of the turbine. The second heat exchanger may be configured to extract heat from at least one heat source using the expanded bleed air.

Abstract: A system (166) for transferring mechanical power in a turbine engine (150/151) including a low pressure spool (162) and a high pressure spool (156) includes a power transfer unit (168) coupled between an output shaft (172) of the low pressure spool (162) and a drive shaft (174) of the high pressure spool (156) to mechanically link the low pressure spool (162) to the high pressure spool (156), and a clutch (170) coupled to the power transfer unit (168), wherein the clutch (170) is configured to transfer power produced from the low pressure spool (162) to the high pressure spool (156).

Abstract: A method of assembling an epicyclic gear train includes the steps of providing a carrier having a central axis that includes spaced apart side walls and circumferentially spaced connecting structure defining spaced apart apertures provided at an outer circumference of the carrier, gear pockets provided between the side walls and extending to the apertures, and a central opening in at least one of the side walls, inserting a plurality of intermediate gears through the central opening and moving the intermediate gears radially outwardly into the gear pockets to extend into the apertures, inserting a sun gear through the central opening after the step of inserting the plurality of intermediate gears through the central opening, moving the plurality of intermediate gears radially inwardly to engage the sun gear, and placing a ring gear on an outer periphery of the intermediate gears to engage the intermediate gears after the step of moving the plurality of intermediate gears radially inwardly.

Abstract: A pressure relief latch includes a housing configured to be mounted to a pressure relief door. A bolt is coupled to the housing about a first axis and is rotatable about the first axis between a first bolt position and a second bolt position. The bolt includes a bearing centered about a second axis. The bearing is configured to rotate about the second axis. A spring assembly includes a first assembly end mounted to the bearing and a second assembly end in rotational communication with the housing about a third axis. The spring assembly is rotatable about the second and third axes and further includes a spring extending between the first and second assembly ends. The bolt is configured to permit movement of the pressure relief door from the closed position to the open position as the bolt rotates from the first bolt position to the second bolt position.

Abstract: A gas turbine engine comprising a central power shaft; a rotatable turbine impeller on the shaft, a compressor configured to receive power from the central power shaft, the compressed air exiting the compressor entering a cavity of the impeller. Ejector(s) mounted on a periphery of the impeller having a combustion chamber including an outer wall; a mixing chamber downstream of the combustion chamber, a passageway to the mixing chamber from outside the combustion chamber for ejected (outside) air to enter the ejector and travel to the mixing chamber where the ejected air mixes with a flow of hot gases that has exited the combustion chamber to create a mixed flow of gases. A convergent-divergent nozzle at an exit of the mixing chamber accelerates the mixed flow of gases moving through the nozzle, thereby creating a reaction thrust and a moment of force on the shaft.