Abstract: A stiffener rib for a non-cooled, hollow core airfoil of a turbine blade is described. The stiffener rib is constituted by an elongated solid metal piece dimensioned for securement in a hollow region of a core portion of the airfoil. The stiffener rib is shaped and oriented upwards from a leading edge of the airfoil at a predetermined calculated angle to minimize mode 2 deformation of the blade at a trailing edge thereof while improving the rigidity of the turbine blade.

Abstract: Several embodiments that enhance and improve the efficiencies of vertical axis wind turbine generators by expanding their normal range of useful operations. Stationary vanes provided external to the rotor blades provide directional control of wind/air flow into the blades for decreased drag and increased differential wind pressure. Control scenarios for adjusting stationary wind vanes and additional ducting of air to increase efficiencies.

Abstract: A wind turbine control system suitable for minimizing actuation of pitch actuators is disclosed. The control system uses an error gain schedule in full load control for reducing pitch actuation when the difference between the rotor speed and the reference rotor speed is not critical for the load of wind turbine components. The error gain schedule may be a nonlinear function which reduces the gain for low rotor speed errors. The use of the error gain schedule may reduce wear of the pitch actuators and may improve reduction of structural oscillations since focus removed from tracking the rotor speed reference when the speed error is low.

Abstract: The present patent application provides a wind turbine with variable blade pitch. The wind turbine with variable blade pitch includes a turbine shell coaxially disposed at a turbine axis; and at least three evenly distributed blade handle bases fixedly disposed at the outer circumference of the turbine shell. A blade handle axis is coaxially configured on each blade handle base. A blade is fixedly disposed on each blade handle axis. A centrifugal blade pitch changing unit is disposed on the turbine shell and configured to adjust the rotation speed of the wind turbine. When the rotating speed of the wind turbine exceeds the rated rotating speed, it is regulated by the centrifugal blade pitch changing unit, so as to avoid the rotating speed of the wind turbine to be greatly increased due to the wind speed rise and make the wind turbine run stably at the rated rotating speed.

Abstract: An aerofoil for a compressor comprising a suction surface and a pressure surface with a thickness distribution defined therebetween, the aerofoil further comprising a first local maximum in the thickness distribution and a second local maximum in the thickness distribution, the second local maximum being downstream of the first local maximum and the second local maxima being formed by a first region of concave curvature in the suction surface between the first and second local maxima, wherein the second local maximum is disposed such that in use a boundary layer upstream of the second local maximum on the suction surface is thinned by the second local maximum, and in addition the boundary layer may be sufficiently thinned so that an interaction of an upstream flow feature with the thinned boundary layer is capable of generating a turbulent spot with a calmed region downstream of the turbulent spot.

Abstract: Systems for thermally regulating portions of a steam turbine are disclosed. In one embodiment, a thermal control system for a rotor bearing support includes: a housing fluidly connected to an inlet and adapted to substantially enclose the rotor bearing support, the housing defining a first annular cavity adapted to receive a fluid from the inlet; and an outlet fluidly connected to the housing, the outlet adapted to receive the fluid from the annular cavity.

Abstract: An off axis hydraulic pump for an automatic motor vehicle transmission includes an integrated chain and sprocket assembly. A first, chain drive sprocket is mounted on a shaft driven by an input to a torque converter and a second, driven chain sprocket is attached to a stub shaft which drives the pump. A multi-link chain encircles the sprockets and transfers drive torque from the torque converter input to the stub shaft. The first, chain drive sprocket is retained on the input shaft by a retainer cap which includes seals between both the shaft and a torque converter housing. The second, driven chain sprocket is retained on the stub shaft by a snap ring or similar component.

Abstract: A turbomachine high-pressure turbine including a rotor disc with upstream and downstream annular flanges separating a radially internal annular cavity in which the hub of the disc extends from two radially external annular cavities, of which one is upstream of the disc and receives a ventilation air flow and of which the other is downstream of the disc, the upstream flange of the disc including a mechanism connecting to the upstream eternal cavity and the internal cavity for ventilating the hub of the disc.

Abstract: A rotor assembly. The rotor assembly may include a rotor, at least one axial slot positioned about the rim of the rotor having a first staking recess positioned therein, a blade positioned within each of the axial slots having a second staking recess positioned therein, a staking insert having a base portion and a projection extending therefrom with the base portion being disposed within the first staking recess and the projection being disposed within the second staking recess, and a shim positioned within the first staking recess adjacent to the base portion, opposite the projection, of the staking insert. The first staking recess retains the staking insert while the projection of the staking insert retains the blade in both the aft and forward directions.

Abstract: A uniaxial eccentric screw pump enabling a stator to be easily separated into an outer cylinder and a lining member, and being capable of solving problems such as a positional shift and deformation of the lining member, and an occurrence of uneven wear and an unstable discharge amount associated with the positional shift and deformation. The stator includes a liner portion having a cylindrical shape and being integrally formed so as to have an inner peripheral surface of an internal thread type and an outer cylinder portion. The liner portion includes, at both end portions thereof, flange portions protruding radially outward, and an outer cylinder mounting portion is provided between the flange portions. The outer cylinder portion is mounted in a non-bonded state on the outer cylinder mounting portion, and both end portions of the outer cylinder portion abut on the flange portions, respectively.

Abstract: A blade assembly for a torque converter including a shell with an inner surface and a plurality of blades attached to the shell by brazing. Each blade has a first surface for guiding a fluid in the torque converter and a second surface substantially parallel to the inner surface. The blades may include sheet steel and may be made by stamping. In an example embodiment of the invention, each blade includes at least one tab, the shell comprises a plurality of slots or indents, and the at least one tab is disposed in a respective slot or indent. The shell may be an outer shell or a core ring for a pump or turbine for the torque converter.

Abstract: The invention relates to a sealing device for the partition penetration of a connecting rod of a turboprop fan blade orientation control system. The device includes a bellows (60) of trunconical shape designed to allow passage of the connecting rod (50a) and having, at its wider end, means (62, 64) of attachment to the partition (58) to be sealed and, at its narrower end, an O-ring through which the connecting rod is free to slide.

Abstract: A rotor system for an aircraft including a rotor (1) with a drive part (2) mounted rotatable about a rotation axis (8) and supporting the proximal end (9) of at least one rotor blade (3). The rotor system comprises a jet turbine (4) for providing pressurized exhaust gas to a rotary structure (7) having at least one jet nozzle outlet (6) and at least one jet stream duct (5) for transporting the pressurized exhaust gas from the turbine (4) to the jet nozzle outlet (6) to cause rotation of the rotary structure (7) by expelling the pressurized exhaust gas through the nozzle outlet (6). In addition, only the rotary structure (7) and not the rotor blade (3) comprise a jet stream duct (5) and a nozzle outlet (6).

Abstract: A portable fluid blower with a housing having a central axis and defining a fluid flow path extending axially between an upstream inlet and a downstream outlet. A fan assembly has a rotary component that is operable to draw fluid into a first stage of the flow path and accelerate fluid incoming at the inlet radially outwardly to against a first housing surface portion that diverts the fluid to a second stage of the flow path. The second flow path stage is defined by facing second and third housing surface portions that cause the fluid to flow substantially fully axially in an annular space extending around the central axis between the first stage and a third stage. The fluid flows from the third stage to and through the downstream outlet.

Abstract: An improved guide vane for an inline fan is provided, as is an inline fan assembly so characterized. The vane guide includes a first vane segment characterized by first and second end portions, and a second vane segment characterized by first and second end portions. The second end portion of the first vane segment is in a spaced apart and overlapped arrangement in relation to the first end portion of the second vane segment. The first end portion of the first vane segment is an adjacent most vane guide end portion in relation to an impeller of the fan. The first vane segment is of arcuate configuration, with the second vane segment being of linear configuration.

Abstract: A device for controlling orientation of fan blades of a turboprop including at least one set of fan blades having adjustable orientation attached in rotation to a rotating ring mechanically connected to a turbine rotor. Each blade of the set is coupled to a blade root support pivotably mounted on the rotating ring by a conical gear train including a first gear wheel attached to the blade root support and a second gear wheel attached to the rotating ring and bearing a counterweight that is eccentric with respect to its axis of rotation. A cylinder attached in rotation to the turbine rotor and a rod of which is connected to each counterweight through a connecting arm makes it possible to impart synchronous angular displacement to all the counterweights about the axis of rotation of their respective gear wheel.

Abstract: A rotor blade comprising fiber-reinforced plastic for a wind power plant is provided with a radar absorber embedded into the fiber-reinforced plastic. The rotor blade includes a layer close to the surface with a defined electrical sheet resistivity of 100 to 800 ohm/square, which is located at a depth of 2 to 5 mm below the surface. The rotor blade also includes a layer far removed from the surface with a defined electrical sheet resistivity of at a maximum 50 ohm/square at a distance to the layer close to the surface of 5 to 16 mm. The integrated radar absorber covers one or several discrete surface sections of the rotor blade, without covering the entire surface of the rotor blade.

Abstract: An arrangement with a nacelle and a radiator arrangement of a wind turbine is provided. The radiator arrangement includes a guiding assembly. The nacelle includes a guiding assembly, too. The guiding assembly of the radiator is positioned and constructed in a way that the guiding assembly interacts with the guiding assembly of the nacelle. Thus, the radiator arrangement is lifted and passed to a final position on top of the nacelle by the engaged guiding assemblies.

Abstract: The disclosure relates to a hollow gas turbine vane that is cooled by an arrangement configured to sequential cooling an endwall of the vane and its airfoil and, at the same time, the two endwalls of the vane. This arrangement can reduce cooling air demand, which can have a positive effect on the turbines efficiency.

Abstract: A deployment device and system for a hydrokinetic energy converter such as a hydrokinetic turbine that can be coupled to a generator to produce electricity. The deployment device can include a floatable platform including a central aperture sized to allow a hydrokinetic turbine to be lowered therethrough into water. A pair of deployment swing members are rotatably attached to the platform and located adjacent to the central aperture. Each deployment swing member has a support for connection to an end of a hydrokinetic turbine. Each deployment swing member is rotatably supported for rotating the swing members from a first position in which the swing member and any attached turbine are raised at least partially out of the water, through the central aperture, and to a second position in which the swing member and any attached turbine are lowered beneath the platform at least partially in the water.