Abstract: A slurry pump impeller which includes a front shroud and a back shroud each having an inner main face with an outer peripheral edge and a central axis, a plurality of pumping vanes extending between the inner main faces of the shrouds, the pumping vanes being disposed in spaced apart relation. Each pumping vane includes a leading edge in the region of the central axis and a trailing edge in the region of the outer peripheral edges of the shrouds with a passageway between adjacent pumping vanes. Each passageway has associated therewith a discharge guide vane, each discharge guide vane being disposed within a respective passageway and located closer to one or the other of the pumping vanes and projecting from the inner main face of at least one of the or each shrouds.

Abstract: A pitch drive device of a wind power generator capable of preventing the loss of reliability of the pitch drive device with a simple structure and a wind power generator are provided. A rotor head of a wind power generator in which a plurality of wind turbine blades are radially attached around a rotation axis is formed by joining a plurality of separately formed front rotor head and rear rotor head, and joint portions of the front rotor head and the rear rotor head are formed in a plane intersecting the rotation axis.

Abstract: An axial flow compressor blade with a cavity formed within the blade tip region and connected by an array of holes onto the pressure side surface of the blade in the tip region so that compressed gas will flow into the cavity, and the cavity is connected by a row of tip slots arranged along the blade tip along the pressure side tip corner to discharge the compressed gas from within the cavity out onto the blade tip toward the oncoming compressed gas flow over the blade tip to reduce or eliminate any boundary layer formation and to reduce blade tip leakage flow.

Abstract: A monitoring system and associated operational method are operatively configured with a wind turbine for detecting separation of shell members along an edge of a wind turbine rotor blade. The system includes any configuration of sensors disposed within an internal cavity of the rotor blade, with the sensor oriented relative to a leading or trailing edge of the blade and configured to detect a physical characteristic within the blade that is indicative of onset of a separation between the shell members along the monitored edge. A controller is configured to receive signals from the sensor and to initiate an automatic response to a detected separation.

Abstract: Lightning protection for wind turbine blades, and associated systems and methods are disclosed. A system in accordance with a particular embodiment includes an external skin having a hub region and a tip region, at least one electrically exposed, electrically conductive element positioned at the external skin, and an electrically conductive cable positioned inwardly from the external skin and conductively coupled to the at least one electrically exposed, electrically conductive element. A covering is positioned around the cable and has a first dielectric value at a first portion of the cable positioned toward the hub region and a second dielectric value higher than the first dielectric value at a second portion of the cable positioned toward the tip region.

Abstract: A turbomachine includes a housing having an outer surface and an inner surface that defines an interior portion. The housing includes a fluid plenum. A rotating member is arranged within the housing. The rotating member includes at least one bucket having a base portion and a tip portion. A stationary member is mounted to the inner surface of the housing adjacent the tip portion of the at least one bucket. At least one fluid passage passes through at least a portion of the stationary member. The at least one fluid passage includes a fluid inlet fluidly coupled to the fluid plenum and a fluid outlet exposed to the interior portion. The fluid outlet being configured and disposed to direct a flow of fluid toward the tip portion of the at least one bucket.

Abstract: An apparatus and method for locking a composite component such as blade or vane of a turbine engine is disclosed herein. The disclosed lock can also be used generally to fix the position of composite structures. The lock includes a first locking member including a first structure operable to at least partially fix the first locking member along an axis of a slot for receiving a blade or a vane. The lock also includes a second locking member including a second structure operable to engage the blade or vane. The first and second locking members are slidably engaged with one another along mating ramped surfaces.

Abstract: A wind turbine arranged to operate in confined area is disclosed. The wind turbine is constrained within two axially displaced end plates and diametrically opposed wind barriers. The wind barriers are parallel to the axis and extend between end plates. The wind barriers each having an axially extending inner edge radially spaced from an outer swept surface of the turbine blades by less than 20% of the turbine radius. In another embodiment, there is disclosed a 2-dimensional array of wind turbines, with wind barriers being arranged between parallel axes.

Abstract: A steam turbine and a start-up system for a steam turbine are disclosed comprising: a plurality of stages, a steam path through the plurality of stages, an inlet port for introducing steam to a first stage, an exhaust port at a last stage for allowing exhaust to exit the steam turbine, an admission port for allowing steam to enter the steam path at a location downstream from the inlet port, and a ventilator port for allowing steam to exit the steam path, the ventilator port located upstream of the admission port to create a reverse flow of steam towards the ventilator port from the admission port.

Abstract: A flow outlet for a pump includes a pocket section which defines a pocket section diameter. A throat section downstream of the pocket section, the throat section defines a throat section diameter less than the pocket section diameter.

Abstract: A high-efficiency wind turbine structure for providing torque to a rotary machine such as a generator. The structure embraces a flat central member arranged to rotate on an axis, and a plurality of peripheral vanes arranged so as to exhaust wind to a plurality of constrictions that exist between curved end portions of adjacent vanes. Improved efficiency and simplified construction are considered to be the advantageous characteristics.

Abstract: A rotor blade assembly and a method for reducing the noise of a rotor blade for a wind turbine are disclosed. The rotor blade has surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade assembly further includes a noise reducer configured on a surface of the rotor blade, the noise reducer including a plurality of noise reduction features. Each of the plurality of noise reduction features includes a first surface and a second surface. The first surface includes a first portion mounted to one of the pressure side or the suction side and a second portion configured to interact with wind flowing past the other of the pressure side or the suction side. The second surface interrupts an aerodynamic contour of the one of the pressure side or the suction side.

Abstract: A pitot tube pump having a hydraulic chamber, a fluid supply line, a fluid discharge line, and a drive, in which the supply line, the discharge line and the drive are all arranged on the same side of the hydraulic chamber. A pitot tube preferably is mounted in the hydraulic chamber on a shoulder of a fixed shaft in communication with the discharge line. The drive is preferably an electric motor with a stator which is connected in a rotationally secure manner to the fixed shaft, and a rotor which forms a part of the hydraulic chamber or which is connected in a rotationally secure manner to the hydraulic chamber.

Abstract: A cooling fan includes a housing, a cover on the housing and an impeller received in a space between the housing and the cover. The housing includes a bottom wall and a sidewall projecting upwardly from an outer periphery of the bottom wall. The sidewall defines an air outlet therein. The impeller includes a hub and a plurality of blades extending radially out from the hub. A porous layer extends into the space between the housing and the cover from the sidewall at a location adjacent to the air outlet.

Abstract: A stator for installation in a rear section of a jet engine includes a plurality of guide vanes which extend in the radial direction of the stator and between them define ducts for leading a gas. A first side of the stator in its axial direction defines an inlet for the gas and a second side, opposite the first side, defines an outlet for the gas. The guide vanes have such a shape that together they at least substantially cover the gas inlet viewed in the axial direction of the stator from the outlet side thereof.

Abstract: A method for the variation of at least one blade row of a fluid-flow machine, in which, in dependence of the actual operating point, in addition to an aerodynamic speed, at least one further quantity pertinent to the position of the operating point in the family of characteristics of the fluid-flow machine is employed for control.

Abstract: A turbine rotor blade with a cooling circuit that provides for multiple metering and impingement cooling for the entire airfoil. A cooling supply channel delivers cooling air into a leading edge impingement cavity, a row of suction side wall impingement cavities, and a row of pressure side impingement cavities through metering holes to produce impingement cooling for each cavity. Another series of impingement cavities is formed in the trailing edge region and connects with the last impingement cavity in the mid-chord region to cool the trailing edge.

Abstract: A card seal with an annular arrangement of cards that form the card seal, where the cards are interweaved and staggered to increase a sealing capability of the cards. The card seal is formed from leading edge cards staggered with trailing edge cards, and the cards have a thicker outer end and a thinner inner end where the interweaving occurs. Because of the varying thickness of the staggered cards, each card has a taper on the lower outer end that decreases from a high to a low on the inner side in order that a foot print for the card is constant across the bottom surface that floats on the rotating part.

Abstract: Blade insert connected in the lamination of a blade determining a double shear joint between insert and lamination. The insert is made up of two defined parts, head (2), designed to screw the insert to another structure (2?), and the body (3) that determines a cylindrical or conical shape with an internal conical cavity. In an embodiment, the insert is designed to be joined to the lamination (1) of the blade with adhesive means (4). In another embodiment, the insert is embedded in the blade lamination with an inner part (5) stuck to the body (3) of the insert.

Abstract: Embodiments of a turbine nozzle assembly are provided for deployment within a gas turbine engine (GTE) including a first GTE-nozzle mounting interface. In one embodiment, the turbine nozzle assembly includes a turbine nozzle flowbody, a first mounting flange configured to be mounted to the first GTE-nozzle mounting interface, and a first radially-compliant spring member coupled between the turbine nozzle flowbody and the first mounting flange. The turbine nozzle flowbody has an inner nozzle endwall and an outer nozzle endwall, which is fixedly coupled to the inner nozzle endwall and which cooperates therewith to define a flow passage through the turbine nozzle flowbody. The first radially-compliant spring member accommodates relative thermal movement between the turbine nozzle flowbody and the first mounting flange to alleviate thermomechanical stress during operation of the GTE.