Abstract: An aircraft turbine engine having a primary air flow path with low-pressure and high-pressure compressors, a secondary air flow path which is located around the primary path and runs coaxially thereto, the turbine engine including vanes distributed about a main axis of the turbine engine. A pressurized air circuit draws air between the low-pressure compressor and the high-pressure compressor or in the high-pressure compressor and supplies at least one component located close to a main axis of the turbine engine. The pressurized air circuit includes a heat exchanger between the stream of pressurized air and the stream of air flowing in the secondary path, the heat exchanger being arranged in at least one of the straightening vanes, where a heat exchanger pipe is arranged, the pipe having a pressurized-air inlet and a pressurized-air outlet that are located at the same radial end of the vane.

Abstract: A rotary machine includes a compression section that is disposed between the pair of radial bearings in a casing and compresses a fluid, an expansion section that is disposed side by side with the compression section and expands the fluid, and a thrust bearing that is disposed at a position close to a first end portion or a second end portion of a rotary shaft in an axial direction with respect to the compression section and the expansion section. Among a compression section suction port, a compression section discharge port, an expansion section suction port, and an expansion section discharge port, the compression section suction port is disposed at a position closest to the first end portion in the axial direction, and the expansion section discharge port is disposed at a position closest to the second end portion in the axial direction.

Abstract: A method of operating a gas turbine engine in a multi-engine aircraft, the gas turbine engine having an engine shaft mounted for rotation in a bearing and a gearbox connected to the engine shaft for torque transmission therebetween, includes axially preloading the bearing using an axially biasing element disposed between the gas turbine engine and the gearbox. The axially biasing element reacts against the gearbox to exert an axial preload force on the bearing and the engine shaft of the gas turbine engine.

Abstract: A downhole-type device includes a fluid-end with a fluid rotor configured to move or be rotated by wellbore fluids. A fluid stator surrounds and supports the fluid rotor. A first bearing couples the fluid rotor to the fluid stator. A second bearing couples the fluid rotor to the fluid stator. An electric machine includes an electrical rotor rotably coupled to the fluid rotor. The electric rotor is configured to rotate in unison with the fluid rotor. An electrical stator surrounds and supports the electric rotor. A lubrication system is fluidically coupled to the downhole-type device. The lubrication system includes a topside pressure pump. A downhole-type distribution manifold is within a wellbore. The distribution manifold fluidically connects to the topside pressure pump, the first bearing, and the second bearing.

Abstract: A gas turbine engine for an aircraft includes an engine core including a turbine, compressor, and core shaft connecting turbine to compressor; a fan located upstream of the engine core and including a plurality of fan blades each having a leading and trailing edge. The turbine includes a lowest pressure turbine stage having a row of rotor blades, each rotor blades extending radially and having a leading and trailing edge. The engine has a fan tip axis that joins a radially outer tip of the leading edge of a fan blade and the radially outer tip of the trailing edge of a rotor blade of the lowest pressure stage. The fan tip axis lies in a longitudinal plane which contains a centreline of engine. A fan axis angle is defined as the angle between fan tip axis and centreline, and is in a range between 10 and 20 degrees.

Abstract: A heat exchanger is provided. The heat exchanger is formed of a spiral wound flow body (70) having a plurality of passages (76) ending therethrough for passage of a first fluid. The flow body is positioned within a housing (42) and a cross-flow of a second fluid passes between or across successive layers of the spiral wound flow body. The intermixing of the thermal energy of the cross-flowing second fluid and the first fluid provide improved heat exchange.

Abstract: The invention concerns a gas turbine combustion system, including a gas turbine. The gas turbine includes at least one compressor, at least one combustion chamber for generating working gas, wherein the combustion chamber connected to receive compressed air from the compressor, at least one turbine connected to receive working gas from the combustion chamber. The combustion chamber consists of an individual can-combustor or comprising a number of can-combustors arranged in an annular can-architecture, wherein the can-combustor having at least one premixed burner. The ignition of the mixture starts at the premixed burner outlet and the flame is stabilized in the region of the premixed burner outlet by means of a backflow zone. The can-combustor comprising a number of premixed burners arranged uniformly or divided at least in two groups within the can-combustor.

Abstract: A precooler for an aircraft engine system includes a precooler core and a precooler inlet to direct a compressor bleed flow into the precooler core to cool the compressor bleed flow. The precooler further includes a precooler outlet to direct the compressor bleed flow from the precooler to a selected component of the aircraft engine system and a precooler bleed port through which a portion of the compressor bleed flow is diverted to a secondary component of the aircraft engine system. The precooler bleed port is oriented such that flow entering the precooler bleed port must substantially reverse direction from a direction of the compressor bleed flow through the precooler.

Abstract: A dart valve assembly includes a dart valve and a clutch that restrains the movement of the dart valve within the bore of a dart valve cage or plunger body between a closed and an open position. The clutch includes a clutch bobbin formed of a synthetic material, and both the inside diameter of the clutch bobbin and the outside diameter of the dart valve stem of the dart valve assembly are configured with a sequence of alternating ridges and grooves to improve clutch action through reduced friction.

Abstract: A rotor is provided. The rotor comprises external blades for use in causing rotation of the rotor, and internal blades for use in propelling a fluid through the rotor during rotation of the rotor.

Abstract: A system for recovering energy in a gas compression plant. The system comprises at least one centrifugal compressor configured to suck the gas, at a certain inlet pressure, from a suction conduit and configured to deliver the gas, at a certain outlet pressure that is greater than an inlet pressure, through a delivery conduit The system also includes at least one gas recirculation system configured to redirect the gas from the delivery conduit to the suction conduit when the gas flow rate entering into the compressor is below a certain limit value. In the portion of the plant arranged downstream of the compressor, at least one turbo-expander and at least one valve are installed in parallel so that they cooperate with each other and are controlled by electronic devices so as to protect the compressor and to produce useful energy during recirculation mode.

Abstract: A downhole pump is operated by a non-electric motor preferably a steam turbine. In a steam assisted gravity drain system the producing well is U-shaped. A steam supply line runs into the turbine that drives the pump after the steam supply passes through a packer. The steam exhaust runs through a shroud until the U-shaped well turns back to go up to the surface. Pump suction is thus separated from steam discharge to reduce mixing as the path of least resistance for the discharged steam when it exits the shroud is up to the surface. The exhaust steam keeps the produced fluids warm and flowing. An injector well runs parallel and slightly above the horizontal portion of the U-shaped producing well.

Abstract: An auxiliary fan that can reduce electricity consumption and increase cooling effects. Air flow which comes from a DC cooling fan is guided to impel one or more auxiliary fans. The auxiliary fans blow and exhaust hot air to increase cooling effects.

Abstract: At the time of an operation, high-pressure air 8 fed through an inlet 6 passes a stator vane 4 within a duct 15, so as to adjust its flow, and is supplied to a tip turbine rotor vane 3. The tip turbine rotor vane 3 is supplied with the high-pressure air 8 from the exhaust side 17 toward the intake side 16, so as to drive an upper fan 2 and a lower fan 14 to rotate in the same direction. This can shorten the distance H from a rotation surface 12 of the upper fan 2 to the end part of a fan casing 1 on the intake side 16, and thus reduce an area where a negative pressure occurs when receiving a crosswind 9, thereby lowering an external force 11 caused by the negative pressure.

Abstract: A system for recovering energy in a gas compression plant. The system comprises at least one centrifugal compressor configured to suck the gas, at a certain inlet pressure, from a suction conduit and configured to deliver the gas, at a certain outlet pressure that is greater than an inlet pressure, through a delivery conduit The system also includes at least one gas recirculation system configured to redirect the gas from the delivery conduit to the suction conduit when the gas flow rate entering into the compressor is below a certain limit value. In the portion of the plant arranged downstream of the compressor, at least one turbo-expander and at least one valve are installed in parallel so that they cooperate with each other and are controlled by electronic devices so as to protect the compressor and to produce useful energy during recirculation mode.

Abstract: A fan system includes a first airflow generator providing a main airflow, a duct having a first feeding port to guide the main airflow, and a first fan. The first fan includes a base, a rotor connected to the base by a shaft, and a plurality of blades connected to the rotor. Each blade includes a passive part corresponding to the first feeding port and an active part. The main airflow drives the passive part rotating about the shaft to synchronously rotate the active part, dissipating heat from a heat source, increasing flow rate of airflow and decreasing pressure. The amount and location of the fans can be flexibly configured.

Abstract: At the time of an operation, high-pressure air 8 fed through an inlet 6 passes a stator vane 4 within a duct 15, so as to adjust its flow, and is supplied to a tip turbine rotor vane 3. The tip turbine rotor vane 3 is supplied with the high-pressure air 8 from the exhaust side 17 toward the intake side 16, so as to drive an upper fan 2 and a lower fan 14 to rotate in the same direction. This can shorten the distance H from a rotation surface 12 of the upper fan 2 to the end part of a fan casing 1 on the intake side 16, and thus reduce an area where a negative pressure occurs when receiving a crosswind 9, thereby lowering an external force 11 caused by the negative pressure.

Abstract: An electronically controlled actuator for controlling a turbocharger has a motor, a speed change mechanism and a position sensor contained in a case consisting of a body and a cover. The driving force of the motor is transmitted through the speed change mechanism to an output shaft to drive the movable vanes of a turbocharger for turning. A first bearing supporting the output shaft for rotation is held on the cover, and a second bearing supporting the output shaft for rotation is held on the body. The position sensor is mounted on the output shaft of the motor. The reliability of the actuator is improved.

Abstract: A method of adapting a downhole multi-phase twin screw pump (10) for use in wells having a high gas content. A first step involves positioning a supplementary liquid channel (22,122) in a housing (12) of the pump in fluid communication with a pumping screw near an intake end (14) of the pump. A second step involves feeding supplementary liquid through the supplementary liquid channel to the pumping screw, thereby enhancing a liquid seal around the pumping screw.

Abstract: A compressor impeller for use with a boreless turbocharger is provided in accordance with this invention. The compressor impeller comprises an integral hub projecting axially therefrom that includes a partial bore therein that extends from an open to a close bore end. The bore includes a threaded portion that is configured to accommodate threaded engagement with an end of a common shaft disposed through a turbocharger housing and attached at an opposite end to a turbine wheel. The hub is specially configured so that the threaded portion has a relatively increased wall thickness when compared to a remaining portion of the bore disposed between the threaded portion and the end of the bore. The bore is configured providing a section having a reduced wall thickness, between the threaded portion and the bore closed end, for purposes of providing a preferential stress relief mechanism.

Abstract: The revolving fan impeller of a fan includes a fan blade ring, which is used to produce an air current, as well as a turbine blade ring, which is used to drive the impeller and which may be impinged upon by a pressurized fluid. The fan casing includes a feed channel for the pressurized fluid as well as several nozzles to carry the pressurized fluid from the feed channel to the turbine blade ring. The number of active nozzles may be varied. For this purpose, the nozzles are arranged on a stator ring, which may be rotated around the fan axis.

Abstract: An aspirator assembly for enabling rapid inflation of evacuation slides and life rafts is configured for direct attachment to the inflatable article. The aspirator assembly comprises an open-ended body housing, a nozzle arrangement for introducing a pressurized fluid into the aspirator and toward a pair of counter-rotating impeller arrangements. The counter-rotating impeller arrangements allow for minimizing the internal forces to enable the stable mounting of the aspirator to the inflatable article without causing damage to the article material during operation.

Abstract: In an exhaust gas turbocharger for an internal combustion engine including an exhaust gas turbine and a compressor connected to the turbine so as to be operated thereby, the turbine includes a housing consisting of an inner and an outer shell formed from steel sheets and being arranged in spaced relationship so as to form therebetween an intermediate space.

Abstract: A device for reversing and modifying air flow created by a suction device. The device has a housing, two fans, two pairs of inlet holes and a dividing wall. The fans are connected by a shaft, so that when the first fan rotates, the second fan rotates in the same direction. The fans are alike but have opposite blade orientations, so that though the fans rotate in the same direction, they output air flow in opposing directions. The fans and air regions they manipulate are separated by the dividing wall. The first pair of air inlet holes provides air to the first fan and then to the suction device. The second pair of air inlet holes provide air to the second fan, which expels that air through a nozzle. The nozzle restricts and directs the expelled air for a specific use such as an air pump or blower. The device for modifying air flow can be fitted with a cowl that collects and directs air particles, disturbed by the nozzle expelled air, through the first pair of inlet holes and to the suction device.

Abstract: The invention is an apparatus for moving reservoir fluids from an underground reservoir using a wellbore extending from the surface to an end beneath the surface, wherein the wellbore communicates with the reservoir such that reservoir fluids enter the wellbore and separate into a liquid phase and a gas phase at a gas pressure. The apparatus includes a first pump, for containing within the wellbore in communication with the liquid, for pumping the liquid phase. The apparatus further includes a pump drive, for containing within the wellbore, operably connected to the first pump for driving the first pump. The pump drive is powered using the gas pressure of the gas phase in the wellbore. An intake communicates with the gas phase in the wellbore and directs the gas phase to the pump drive in order to power the pump drive, while an exhaust directs the gas phase from the pump drive. Further, the invention is a method for moving reservoir fluids from an underground reservoir using a wellbore.

Abstract: A system for injecting an additive within a fuel storage tank or the fuel tank (10) of a vehicle (12) including an additive injector (22) mounted within the tubular inlet (14) of the fuel tank (10). The additive injector (22) includes an additive pump (46) driven by impeller blades (50) on an end of a pump shaft (48). The fuel discharged from the fuel nozzle (58) strikes the blades (50) to rotate the impeller (47) of pump (46) for dispensing the additive. The additive container (51) has an additive line (56) extending to a pump (46) for the supply of additive thereto for discharge from additive nozzle (54) into the flowing fuel stream. The additive is blended with the flowing fuel stream when discharged. The additive injector (22) may be utilized as a retrofit unit on an existing fuel tank by the removal of fuel tank cap (18) and the insertion of additive dispenser (22) within the tubular inlet (14).

Abstract: An electrical machine, such as an electric motor, generator or torquer-generator, includes a relatively rotatable cylindrical armature and magnetic pole structure separated by an annular gap into which a surrounding fluid may flow during operation of the machine. In order to prevent the build-up of deposited solid material in the gap between the components, one of the components is provided at its surface with a narrow elongate projection which extends helically along and around the surface. The height of the projection is slightly less than the gap between the components so that it remains out of contact with the surface of the other component so as not to frictionally engage it and interfere with relative rotation between the components.

Abstract: The invention relates to a refrigeration system of the air cycle cooling system type, also called reversed Brayton cycle in which the air flow through compressor means (12, 16), heat exchanger means (24) for withdrawal of heat from the compressed air and finally expander means (22) from where it is delivered to perform cooling. According to the invention the system includes heat load means (41) having a large flow resistance, creating a considerable over-pressure at the expander outlet (23). A rotary screw machine is included in the expander (22) and also in the compressor means (12, 16), which latter screw rotor machine (12) is driven solely by the screw rotor machine (22) of said expander means.

Abstract: Apparatus for compressing a fluid comprising a tubular, open-ended housing (2) having a suction end (5) and a discharge end (6), a tubular, open-ended rotor (8) rotatably arranged in the housing (2), an annular driver space (17) which is defined between the inner surface of the housing (2) and the outer surface of the rotor (8), an annular seal preventing fluid flow from the annular driver space (17) to the suction end (5), a rotor driver (20) arranged in the annular driver space (17), and a rotor-driven compressor (30) arranged in the tubular rotor (8), wherein the rotor-driven compressor (30) includes a helical screw blade (32) which is secured to the inner surface of the tubular rotor (8), and wherein the pitch of the helical screw blade (32) decreases in the direction of the discharge end (6).

Abstract: A compressed air turbine driven fan having an axial blade fan impeller driven by a partial admission radial inflow air turbine, with both the fan blades and the turbine blades mounted on the hub rim of a single fan-turbine wheel. The turbine exhaust is discharged into a cavity surrounding the shaft of the fan-turbine wheel. In a preferred embodiment, a sound surpressing muffler made of plates having air passage offset from each other is provided with the cavity. Turbine exhaust air exists through the passages to mix with the fan flow.

Abstract: A high speed hydraulic turbine drive. A nozzle body contains a number of nozzles through which hydraulic fluid is discharged to impinge on the blades of a turbine wheel which is fully submerged in the hydraulic fluid. The nozzles are cylindrical or part conical and part cylindrical and the center line of the nozzles for an angle of about 10 to 30 degrees with the outlet surface of the nozzle body. A manufacturing method is provided which permits the manufacture of drives of various power using the same standard machined parts. In preferred embodiments the turbine drive drives high speed and low speed electric generators, a grinder and a garbage disposal unit.

Abstract: A compact water turbine driven water pump comprising an impeller driven by an axial flow water turbine wheel both operating on a single shaft and contained in a housing. A nozzle body also contained in the housing comprises a plurality of nozzles through which water is discharged to imping on the blades of the turbine wheel which is full submerged in water. The nozzles are cylindrical or part conical and part cyndrical and the centerline of the nozzles form an angle of about 10 to 30 degrees with the outlet surface of the nozzle body. A manufacturing method is provided which permits the manufacture of pumps of various power using the same standard machined parts.

Abstract: An portable water driven high velocity fan. Contained in a cylindrical housing is a turbine nozzle body in which a plurality of cylindrical or part cylindrical and part conical nozzles are provided. The nozzles make an angle of about 10 to 30 degrees with the nozzle outlet surface of the nozzle body. A method of manufacture is provided which permits the manufacture of fans having various power ratings using the same standard machined parts.

Abstract: A fluid driven pumping apparatus comprises a housing containing a twin rotor screw type positive displacement motor and a twin rotor screw type positive displacement pump. The screw rotors of said pump and motor are mounted on a pair of common shafts.

Abstract: An engine supercharger is modified to include an auxiliary turbine downstream from the main turbine wheel. The main shaft of the supercharger is tubular (hollow) to accommodate a second shaft. The opposite ends of the second shaft are suitably connected to the auxiliary turbine and an auxiliary fan that is located upstream from the main compressor wheel within the supercharger. An air-collection chamber of scroll-like configuration is arranged between the auxiliary fan and compressor wheel to receive air discharged from outer tip areas of the fan blades.

Abstract: A fluid driven turbine having a stator member and a turbine member rotatable on an axis and supporting turbine blades and with a fluid compression section is described. The fluid compression section is provided along the axis of rotation of and inside the turbine member by providing: (1) a tubular extension (13 or 102) of the stator member and (2) a rotor means (30 or 104) and at least one rotor blade means (50, 51, 52) moveable perpendicular to the axis on the turbine member which fits inside the tubular member to provide at least two adjacent first and second chambers which are defined by an inside wall of the tubular extension and the rotor means and blade means. The tubular member has a line of minimum eccentricity (12) parallel to the axis with inlet and outlet openings (15, 16) on either side of the line of minimum eccentricity to and from the chambers so that fluid is drawn into the chamber and compressed and then exits from the chambers.

Abstract: A unique and improved turbomachine for increasing the pressure of one fluid stream by an energy exchange with that of another fluid stream, at relatively high efficiency, includes a housing supporting a compressor turbine wheel for rotation on bearings. Low pressure fluid enters the compressor, driven at the same rpm and by the turbine, such that the tangential velocity of the fluid leaving the compressor is increased. A high pressure fluid enters the housing through an ejector nozzle and is expanded and mixed with the fluid leaving the compressor, the mixed fluid flowing through the turbine. Since a greater amount of fluid flows through the turbine than through the compressor, there is a sufficient amount of energy to drive the compressor and to provide an output from the turbine which is at a pressure higher than that of the fluid entering the compressor. Various forms and systems are described.

Abstract: A method and apparatus are provided for automatically and continuously balancing the unbalanced thrust resulting from the operation of a fluid pump which is driven by a fluid pressure motor. A hydrostatic-type thrust bearing is employed on the common shaft of the fluid pump and motor by applying pressures to opposite sides of the circular flange of such hydrostatic thrust bearing to compensate for any unbalance in thrust occuring during operation of the pump without requiring any axial movement of the hydrostatic thrust bearing flange. Because of the lack of flange movement, the thrust bearing operates with a constant fluid film thickness.

Abstract: A fluid-operated turbopump, suitable for installation in the bottom hole tubing of an oil well, is structurally adapted as a hydraulically insertable and removable unit. The turbopump has axially spaced rotary driving and driven impellers operable for overbalancing columns of fluid which are separated by the wall of the tubing, the overbalancing operation facilitating upward movement of fluid from an underground production zone to aboveground storage. A tubular drive shaft interconnecting the impellers is utilized to convey fluid axially through the driven impeller.

Abstract: An articulated, submersible turbine pump for installation in a vertically elongated bottom hole assembly of a well has a flexible shaft and a plurality of rotor elements and stator elements mounted about the shaft in adjacent alternating relationship. Each rotor element has rotatable blades attached to the shaft by a hub and a housing segment surrounding the rotatable blades in outwardly spaced relationship therefrom to provide clearance for rotation. Each stator element has a close fitting hub around the shaft, which serves as a journal bearing, a housing segment outwardly spaced from the hub, and stationary blades attached between the hub and the housing segment. The housing segments are longer than the blades and the hub. Matching conical surfaces are formed at opposite ends of the housing segments to seal adjacent housing segments when axially aligned. An annular relief on the periphery of one of the surfaces permits the housing segments to pivot out of axial alignment when the shaft bends.

Abstract: The invention comprises a water circulator device for circulating the water in a lake, pond, or reservoir. The device comprises a raft having a wind driven shaft mounted thereon for vertical rotation. A mixing chamber is mounted beneath the raft with the upper edge of the chamber above the surface of the lake, pond, or reservoir. The lower end of the shaft has a propellor mounted thereon within the mixing chamber. A pair of vertical telescoping pipes are mounted beneath the chamber of reduced diameter in relation to the chamber.

Abstract: A geothermal energy transfer and utilization system makes use of thermal energy stored in hot solute-bearing well water to generate super-heated steam from an injected flow of clean water; the super-heated steam is then used for operating a turbine-driven pump at the well bottom for pumping the hot solute-bearing water at high pressure and in liquid state to the earth's surface, where it is used by transfer of its heat to a closed-loop boiler-turbine-alternator combination for the generation of electrical or other power. Residual concentrated solute-bearing water is pumped back into the earth. The clean cooled water is regenerated at the surface-located system and is returned to the deep well pumping system also for lubrication of a novel bearing arrangement supporting the turbine-driven pump system.

Abstract: A ducted fan gas turbine engine comprises a pair of turbines in flow series which are contra-rotating and which drive shafts which in turn drive into an epicyclic gear. The output from the epicyclic gear drives a fan which normally provides forward thrust from the engine. The fan can be made to rotate in the opposite direction to provide reverse thrust by varying the relative speeds of rotation of the two turbines by bleeding working fluid from between them.

Abstract: A fluid operated turbopump, suitable for use in an oil well pumping system, is structurally adapted as either a hydraulically insertable and removable unit or as a permanent attachment to a bottom hole tubing. The turbopump has axially spaced rotary driving and driven impellers operable for overbalancing columns of fluid which are separated by the well tubing wall, the overbalancing operation facilitating upward movement of fluid from a production zone to above ground storage. A tubular drive shaft which interconnects the impellers is utilized to convey fluid axially through one of the impellers.

Abstract: A multi-shaft gas turbine has an inner shaft rotatably supported at opposite ends thereof with one end adapted to be connected to a load and the other end to a turbine wheel with a tubular section that receives a balance tube removably mounted within the shaft and accessible from the aft end of the engine by removal of an inner exhaust cone and a bearing pump cover. The balance tube includes front, rear and intermediate circumferentially arranged splined lands that bear balance weights angularly positioned on the tube prior to insertion thereof into the shaft, each of the weights having a peripheral surface thereon for locating the longitudinal axis of the balance tube colinearly of the longitudinal axis of the inner shaft.

Abstract: A geothermal energy transfer and utilization system extracts thermal energy stored in hot solute-bearing well water to generate super-heated steam from an injected flow of clean water; the super-heated steam is then used for driving a turbine-driven pump at the well bottom for pumping the hot solute-bearing water at high pressure and always in liquid state to the earth's surface, where it is used by transfer of its heat content to a closed-loop vapor generator-turbine-alternator combination for the generation of electrical or other power. Cooled, clean water is regenerated by the surface-located system for re-injection into the deep well and the residual concentrated solute-bearing water is pumped back into the earth. The invention features heat exchanger apparatus located adjacent the turbine-driven pump for permitting steam exhausted by the turbine to cool that part of the re-injected water used as a hydraulic bearing lubricant.