Abstract: A vane for an impeller of an agitator includes a socket having a base plane configured to mount the vane to an impeller, and a blade configured to mix a process fluid, the blade having a leading edge, a trailing edge, and a blade tip extending from the leading edge to the trailing edge at an end of the blade facing away from the socket, the blade having a pressure side and a suction side, and the pressure side having a first concave region towards the leading edge, a second concave region toward the trailing edge and a convex region between the first and second concave regions.

Abstract: A rotor assembly that includes a shaft to which are mounted an impeller and a bearing assembly. The bearing assembly is located at least partly within the profile of the impeller so as to reduce loading of the bearing assembly as well as reduce the cantilever length of the rotor assembly.

Abstract: Several embodiments of a wobble plate motor include a disc mounted on a bent shaft. Driving the wobble plate so it revolves on a flat base causes the bent shaft to rotate and drive a generator or other work consumer. The wobble plate may be driven by a fluid stream impinging on the plate or by a blade assembly in a path of fluid movement. In one embodiment of a bladed motor, a shroud may direct the fluid stream so it more efficiently cooperates with the blade assembly.

Abstract: A system of contra-rotating propellers for an aircraft turbomachine, including: a free power turbine including a first rotor; first and second propellers; and a mechanical transmission system including a planetary gear train fitted with a sun gear driven by the rotor, at least one planet gear driving the first propeller, and a ring driving the second propeller. The free power turbine also includes a second rotor that is contra-rotating relative to the first rotor, and rotating the ring.

Abstract: A boomerang wind blade includes a blade body having a protruding front edge and a recess rear edge. Both sides of the center of the blade body are two wing parts bent at an angle. The wing shape of one wing part is round at the front edge and tapering towards the rear edge. The wing shape of the other wing part is round at the rear edge and tapering towards the front edge. The device with a boomerang wind blade has a shaft fixed to the center of the two wing parts of the blade body to rotate as the blade body is driven by wind. The device also has at least one generator coupled with the shaft to generate electrical power.

Abstract: The fan assembly having multiple centrifugal fans in mechanical connection with a planetary gear system is a novel improvement to the field of fans, and which includes at least two centrifugal fans that are in mechanical connection with a single drive source. A planetary gear system connects the centrifugal fans to the single drive source such that all centrifugal fans work in concert. The assembly includes a housing that is constructed of a first portion positioned atop and able to rotate with respect to a second portion. The ability of the first portion to rotate with respect to the second portion enables the first portion where the centrifugal fans to rotate 360 degrees. The first portion includes partitions, which isolate each centrifugal fans from one another.

Abstract: Several embodiments of a wobble plate motor include a disc mounted on a bent shaft. Driving the wobble plate so it revolves on a flat base causes the bent shaft to rotate and drive a generator or other work consumer. The wobble plate may be driven by a fluid stream impinging on the plate or by a blade assembly in a path of fluid movement. In one embodiment of a bladed motor, a shroud may direct the fluid stream so it more efficiently cooperates with the blade assembly.

Abstract: A power split transmission includes a rotatable input shaft, a rotatable output shaft, and a planetary gear assembly connected between the input shaft and the output shaft. The transmission also includes a first hydraulic unit operable as a pump or a motor, the first hydraulic unit being coupled to the output shaft via the planetary gear assembly; a second hydraulic unit operable as a pump or a motor, the second hydraulic unit being coupled to the output shaft independently of the planetary gear assembly; and a braking mechanism coupled to the input shaft that is selectively engageable to retard rotation of the input shaft in at least one direction. The braking mechanism enables the power split transmission to use both the first hydraulic unit and the second hydraulic unit to provide enhanced torque at the output shaft without damaging a prime mover coupled to the input shaft.

Abstract: The present invention provides an improved built-in swing mechanism of a rotary fan. The mechanism includes a ball-and-socket support frame, arranged onto front wall of the main casing corresponding to the axle center of a drive motor and provided with a spherical supporting surface and a through-hole. A spherical abut seat is fastened at a front end of the drive motor is provided with a spherical abut surface that couples with the spherical supporting surface. A punch hole is placed at the center of spherical abut surface for the penetration of the axle center. A crank linkage element is assembled between rear end of the drive motor and the rear wall of the main casing. The first end of the crank linkage element can be driven to enable the oscillation of the second end. The second end is assembled at a rotary pivot corresponding to the main casing.

Abstract: A method of emergency operation of an aircraft turbofan engine during an aircraft flight is provided. The engine includes a fan shaft with a fan, and an electric motor/generator mounted for rotation therewith. The method includes shutting down the engine while allowing the engine to windmill, operating the electric motor/generator to rotate the shaft at a determined windmilling speed which is desired for the fan shaft, and operating the engine at the desired windmilling speed for substantially a remainder of the aircraft flight.

Abstract: A machine, such as a pump or motor, includes a housing with two chambers which are delimited therein. The chambers are delimited between a partition wall which is arranged centrally in the housing and extends on all sides, and displacement members which are situated on either side of the partition wall. These displacement members perform a tilting movement as a result of which in each case a fluid volume is displaced. The housing is provided with inlets and outlets near the partition wall. The tilting movement can be produced by a combination of a rotating shaft and an eccentric.

Abstract: A rolling fluid machine especially with a liquid spraying at the output, comprising a chamber (1) where at least a part of its inner surface has a rotary shape and the chamber (1) is provided with at least one inlet (2) of fluid and at least one outlet (3) of fluid. In the chamber (1) there is a rolling rotor (4) installed in a manner enabling rolling and swinging. In the chamber (1) the space (5) bellow the rotor (4) and the space (6) above the rotor (4) is interconnected by at least one additional channel (7).

Abstract: A turbojet includes a differential gear with a first planetary pinion driven by the shaft of the high pressure spool and a second planetary pinion driven by the shaft of the low pressure spool. The planetary pinions drive satellite pinions mounted in a cage by which the ancillary machines are driven. The satellite pinions and said cage are co-rotary and the mechanical transmission ratio R1 between the high pressure shaft and the first planetary pinion of the differential gear and the transmission ratio R2 between the low pressure shaft and the second planetary pinion of the differential gear are such that the power extraction distribution between the high pressure spool and the low pressure spool at idle speed is between 80%/20% and 20%/80%. The operation of the high pressure compressor is not affected by the maximum power drawn by the ancillary machines.

Abstract: The invention relates to a method of a continuous determination of an instantaneous position of an impeller blade tip (5′) in a rotor turbine machine, particularly in a turbine impeller (6) in a turbojet engine during its operation in a real condition in order to obtain a current information on a technical state of the blade (5). In a selected place of an housing (7) of a rotor turbo machine, in a movement plane of impeller blade tips (5′), it is arranged in a stable manner at least one microwave antenna (3) with an aperture shape (4) which is consistent with an internal surface of an housing (7). The microwave signal (11), which is produced by a microwave homodyne system, is emitted, and then received, through a microwave antenna (3). The output signal (9) from that system, which carries out information on each instantaneous position of an impeller blade tip (5′) in relation to an antenna aperture (4), is converted by an electronic system, and then it is read.

Abstract: In a centrifugal compressor the drive shaft of the compressor is driven by a step up gear mechanism including an input shaft driving a central drive gear, an output gear mounted on the compressor drive shaft, and three gear trains extending from the central drive gear and the output gear. Two impellers to provide two stages of compression are mounted back to back on the inner end of the compressor drive shaft. The input shaft of the gear train mechanism comprises a quill shaft surrounded by a hollow shaft fixed by friction to the inner end of the quill shaft. A rubbing seal is provided between the outer end of the hollow shaft and the compressor casing. The compressor drive shaft is supported on its outer end by the gear train mechanisms and at its middle and near its inner end by angular contact ball bearings. The portion of the compressor drive shaft between the ball bearing at the middle of the shaft and the outer end of the drive shaft is a flexible quill shaft.

Abstract: A nutating drive comprising a housing with a rotor mounted for axial rotation in the housing and an elongated nutating bar retained at one end thereof in a rotary bearing which is connected to the rotor via a drive coupling at a position offset from the rotor axis for imparting nutational movement to the bar about a geometric center of nutation with axial rotation of the rotor. The drive coupling which connects the nutating bar bearing to the rotor is comprised of a flexible sheet support having outer edges secured to the rotor which permits limited pivotal movement of the bar bearing relative to the rotor. This flexible sheet support may be provided in the form of a single flexible disk or as multiple flexible support strips. In either case, support is provided with at least one undulation extending in the radial direction to enhance pivotal flexibility.

Abstract: A nutating drive with hermetic seal which includes a housing with an internal wall and a nutating bar passing through an opening in the wall. A flexible tubular diaphragm seal surrounds the bar and is sealed at one end to the wall about the wall opening and is sealed at its other end to the bar for providing a hermetic seal for the wall opening. A universal joint support mechanism connects the bar to the housing for gimbaled non-axial rotational support of the bar in the housing. An axially rotatable rotor is mounted for axial rotation in the housing and the bar is pivotally connected at one end to the rotor at a position offset from the rotor axis for imparting nutational movement to the gimbaled bar about a geometric center of nutation with axial rotation of the rotor. The tubular diaphragm has a conical configuration tapered from a maximum diameter at the wall and to a minimal diameter at the bar end and the tubular seal encloses the geometric center of the bar.

Abstract: A pump employing a nutating plate within a chamber impels fluid flow from an axial inlet to a peripheral outlet. The chamber extends 360° and the plate has holes about the axis thereof such that both sides of the plate can operate to impel fluid through the chamber. A dynamic balancing system which may include two dynamic balancing rings with multiple weights therein act to overcome eccentricities and vibrational moments.

Abstract: A pump employing a nutating plate within a chamber impels fluid flow from an axial inlet to a peripheral outlet. The chamber extends 360° and the plate has holes about the axis thereof such that both sides of the plate can operate to impel fluid through the chamber. A dynamic balancing system which may include two dynamic balancing rings with multiple weights therein act to overcome eccentricities and vibrational moments.

Abstract: A pump employing a nutating plate within a chamber impels fluid flow from an axial inlet to a peripheral outlet. The chamber extends 360° and the plate has holes about the axis thereof such that both sides of the plate can operate to impel fluid through the chamber. A dynamic balancing system which may include two dynamic balancing rings with multiple weights therein act to overcome eccentricities and vibrational moments.

Abstract: A liquid pump in which a perfect seal is achieved between a liquid and the atmosphere without the use of magnets includes a driving unit coupled to external power for being rotated thereby, a shaft installed obliquely with respect to the axial direction of the driving unit and having one end thereof rotatably supported on the driving unit, an impeller, rotatably supported on a housing so as to rotate in coaxial relation to the driving unit, for rotatably supporting the other end of the shaft and impelling a liquid by being rotated, and a bellows provided between the shaft and the housing for effecting sealing liquid-tightly between the shaft and the housing on the side of the impeller.

Abstract: A liquid pump in which a perfect seal is achieved between a liquid and the atmosphere without the use of magnets includes a pump shaft rotatably supported inside housings and having an impeller secured thereto for impelling a liquid through the pump, a driven unit provided inside the housing for rotating the pump shaft, a driving unit coupled to external power, and a resilient member provided between the driven unit and the driving unit for effecting sealing liquid-tightly between the driven unit and the driving unit on the side of the impeller and transmitting force from the driving unit to the driven unit.

Abstract: An integrated system for controlling the positioning of a rotating rotor within a compressor to enhance the performance of a gas turbine engine. The rotor being attached to a rotating shaft that is coupled to the compressor housing by a magnetic bearing system. The magnetic bearings support and position the rotor within the high speed tubomachine. During operation of the compressor the magnetic bearings non-axially position the rotor relative to the compressor housing to provide compressor instability control. By non-axially displacing the rotor relative to the compressor housing there is a resulting local disturbance to the fluid flow field, which in turn serves as the disturbance to alter the dynamics of the aerodynamic system and displace the compressor surge line.

Abstract: A precessional centrifugal pump of the type adapted to deliver liquid while rotating it with an impeller that makes a precessional movement. The pump includes an annular space provided in a conical casing and an impeller arranged in the annular space in such a manner as to be able to run therein. The impeller includes of a head and a rod that extends through the opening of the casing at the apex thereof. The pump further includes a flow guide wall protruding from the center of the circular end face of the casing into the annular space and inwardly defining the annular space, an inlet way formed within the flow guide wall, and an outlet which extends tangentially from the annular space. The inlet way is open in a spiral manner from the head section of the flow guide wall over the entire length thereof.

Abstract: The present invention is a centrifugal pump with a nutating impeller characterized in having a flow guide wall defining an annular space in a conical casing by projecting into the casing from the center of a circular end face of the casing. The flow guide wall also defines an inner face of the annular room and has an inlet open at the center of the end face of the casing. The centrifugal pump has a higher pump efficiency and a lower inverse flow and flow disturbance.

Abstract: A device for moving air quietly and in volume comprising a frame, a pair of disks or rotor in another form eccentrically and rotatably supported in spaced apart relationship in the frame and a plurality of paddle members mounted, with their planes at approximate right angles to the flow of air, to and between the pair of rotors. Preferably one of the pair of rotors is driven, which in turn rotates the other rotor via the connection of the paddle members or both rotors are driven separately. When placed in a vertical attitude, in order to mount paddles to be at approximate right angles to the flow of air, one rotor supports the top of the paddles at one end of them, and the other rotor, located suitably lower, supports the bottom of the paddles at the other end of them. Thus the paddles are all continually vertical as they rotate to push air in volume in two directions through the top and bottom parts.

Abstract: Disclosed herein is an air agitation device that is positioned between two opposite sets of shelves on which the articles to be dried are placed.The device constitutes two identical crankshafts, oriented in the same direction, that rotate in synchrony with respect to axes perpendicular to the opposite surfaces of the said sets of shelves.To the crankpins of the said shafts are articulated, on opposite sides, two ventilation frames, each of which provided with a plurality of fins oriented suitably with respect to the said sets of shelves.The synchronous rotation of the crankshafts renders movable each frame, which oscillates with a harmonic motion in two inter-perpendicular directions, one of which is coincident with the longitudinal axis of the passageway existing between the sets of shelves.

Abstract: A high feed centrifugal pump has a housing, a low-speed suction stage arranged in the housing and having an axis, at least one high-speed high pressure stage also arranged in the housing and axially displaced from the low speed suction stage, so that the housing has a suction side and a pressure side, and a drive operative for driving the stages independently of each other and including a first prime mover operative for driving the low speed-suction stage and a second prime mover operative for driving the high-speed high-pressure stage. One of the prime movers which is operative for driving a respective one of the stages is flanged to the housing at a respective one of the sides, whereas the other of the prime movers is flanged to the one prime mover in tandem arrangement.

Abstract: The hydraulic machine comprises an outer rotor, rotatably mounted around a longitudinal axis and connected, through an input shaft, to a driving motor, and an inner rotor mounted at the interior of the outer rotor, rotatable around a transverse axis, and connected, through a gear drive, to an auxiliary shaft coaxial to the input shaft. A hydraulic circuit is arranged at the interior of the inner rotor, and it presents an active circuit consisting of a pipe winding. The ends of the hydraulic circuit are connected, through rotary connections, to a fixed outflow and a fixed inflow connection. Upon rotation of the outer rotor and of the inner rotor around their respective axis, the inner rotor is subjected to a field of accelerations of Coriolis which generates between the ends of the active circuit a substantially sinusoidally varying pressure difference.