Abstract: A wind turbine assembly comprising a generally cylindrical wind turbine rotor that is supported by a rotor support and operable to rotate about a rotational axis, the rotor comprising a plurality of aerofoil blades with each aerofoil blade having a leading edge, a trailing edge, a suction surface, a pressure surface, and an aerofoil chord having a chord length between the leading edge and the trailing edge, the aerofoil blades being in a generally cylindrical arrangement around the rotational axis with the leading edges at a larger radial separation from the rotational axis than the trailing edges, and the chords being angled relative to radii through the rotational axis such that the suction surfaces and pressure surfaces respectively face generally outwardly and inwardly from and to the rotational axis, wherein the minimum separation (S) between the leading edge of a first aerofoil and the suction surface of an adjacent aerofoil is less than the chord length (LC), and wherein the location of the maximum thi

Abstract: A variable geometry turbine has a gas flow control mechanism located upstream of the turbine wheel and operable by an actuator assembly to control gas flow through said inlet passage. The control mechanism comprises a movable member for varying the size of the inlet passage. The movable member is coupled to a pair of rods that translate in an axial direction. The rods are supported for translation in guide bushes. A seal assembly seals against each rod and comprises a seal carrier coupled to an end of the guide bush. The seal carrier carries a lip seal that is in sealing contact with an external surface of the rod.

Abstract: An assembly for a turbine engine including a nosecone that extends along an axis between a tip end and a second end. The nosecone includes a base region and a deformation region configured integral with the base region. The base region is arranged axially between the deformation region and the second end. The deformation region is adapted to deform relative to the base region upon impact of an object, and includes a stress concentrator.

Abstract: A stator assembly for a turbine engine includes a support structure, such as an outer case, providing a bore. A non-metallic bushing is arranged in the bore and extends radially between inner and outer diameters providing a one-piece structure. The outer diameter of the bushing engages the bore in a press-fit relationship, in one example. A stator includes a trunnion arranged within and engaging the bushing inner diameter. In one example, the non-metallic bushing is constructed from an electrographitic carbon. The bushing is installed into the bore such that an end of the bushing is generally flush with or recessed from a wall on the support structure.

Abstract: A structure for an aircraft turbojet including a rolling bearing including an outer ring, a bearing bracket, a retaining ring interposed between the ring and the bracket, a mechanism to connect the ring onto the bracket incorporating an attaching flange installed on the bearing bracket, a flexible connection attached to the ring and to the flange, and a mechanism enabling axial retention of the ring, in event the flexible connection fractures. The mechanism enabling axial retention includes a first stop securely attached to the retaining ring and capable of axially retaining this retaining ring relative to the bracket, and a second stop securely attached to the retaining ring, and capable of axially retaining the ring relative to the retaining ring.

Abstract: A hydraulic excavator is provided which can allow the cooling device to be arranged in proximity to a rear wall of a cab. The rear wall of the cab has an upright wall part extending in the vertical direction and an inclined wall part inclined to the rear upper side with respect to the upright wall part. The outer surface of an oil cooler has a front surface facing the upright wall part and extending in the vertical direction and an inclined surface inclined to the rear upper side with respect to the front surface. The upper edge of the front surface is arranged below the height position of the other edge of the inclined wall part. An angle formed by the upright wall part and the inclined wall part is more than or equal to an angle formed by the front surface and the inclined surface.

Abstract: A rocking piston type compressor is provided with a piston rod, a lip ring, and a ring holding member. The lip ring includes a center portion fixed by the ring holding member, and a lip portion upwardly extending around the center portion along a periphery of the ring holding member. The ring holding member includes a flange portion covering at least a part of an upper end surface of lip portion. A back pressure introducing portion is provided in a part of the flange portion.

Abstract: A hydrostatic drive system for a machine is provided. The hydrostatic drive system includes a first hydraulic circuit, and a second hydraulic circuit. The first hydraulic circuit includes a first pump and a first hydraulic motor configured to selectively receive a flow of pressurized hydraulic fluid from the first pump at a first pressure. The second hydraulic circuit includes a second pump and a second hydraulic motor configured to selectively receive the flow of the pressurized hydraulic fluid from the second pump at a second pressure. The hydrostatic drive system further includes a controller configured to maintain a pressure balance between the first and the second hydraulic circuits based on a difference between the first pressure and the second pressure.

Abstract: A rotor wheel for a turbomachine, particularly a radial turbomachine, having a rotor wheel face and a shrink collar adjoining the rotor wheel face for shrinking onto a rotor of the turbomachine and a circumferential groove between the rotor wheel face and the shrink collar.

Abstract: There is provided an apparatus, method, computer program product, and a kit and method for upgrading, an apparatus for moving cargo. A bus for transmission of electrical energy, at least one load connected to the bus, said at least one load configured to transform electrical energy from the bus into movement of a cargo with respect to the apparatus energy transforming means configured to transform energy between electrical energy of the bus and potential energy of a hydraulic accumulator, wherein the apparatus is configured to store electrical energy from the bus as potential energy to the hydraulic accumulator and to supply the potential energy stored in the hydraulic accumulator as electrical energy to the at least one load.

Abstract: A method of remanufacturing a cylinder assembly that has a shaft body and a slidable cylinder assembly extending thereover. A plurality of seals extend between the shaft body and the slidable cylinder to provide a plurality of fluid-tight chambers. The shaft body has opposing ends with a first end cap positioned at a first end and a second end cap positioned at a second end thereof. The shaft body is permanently coupled to the end caps to preclude removal thereof. The method requires cutting the shaft body to remove the end caps, and subsequent reattachment.

Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system includes a pump configured to pressurize a fluid, and a swing motor selectively driven by pressurized fluid from the pump. The swing motor is configured to move a part of the machine. The hydraulic control system also includes a controller in communication with the pump. The controller is configured to receive an input indicative of a difference between a desired speed and an actual speed of the swing motor, and determine if the swing motor is accelerating, decelerating, or operating at neutral mode. The controller is configured to determine an amount of return fluid from an actuator of the machine that is available as makeup fluid for the swing motor if the swing motor is operating at neutral mode. The controller is configured to control the pump based on at least the amount of return fluid.

Abstract: A rotary wing aircraft yoke is provided including an arcuate medial portion. A pair of arms extends from the medial portion and each terminates in a distal end. The yoke is made from multiple plies of glass and graphite fibers of varying orientations. The number of graphite plies increases along each arm from adjacent the medial portion to the distal end.

Abstract: A turbine includes a stator (10) and a rotor (20); a plurality of turbine stages (30) through which a flow path of an operating fluid extends; an axial thrust balancing piston (40) arranged at the rotor and a first piston chamber (41) connected to one of the turbine stages (30.1) so that the operating fluid can be conveyed into the first piston chamber with a first fluid pressure, and a second piston chamber (42) has a counterpressure so that an axial thrust opposed to a flow direction of the operating fluid can be exerted on the rotor; and a pressure control device (60) connected to the second piston chamber. The pressure control device constructed to vary the counterpressure by controlled removal of fluid from the second piston chamber so that the axial thrust of the axial thrust balancing piston can be varied.

Abstract: A closed impeller has a base cover, which has a base interior surface, and a second cover. A vane, which has an inlet distal end and an outlet distal end, is on the base interior surface. The vane has low and high pressure side surfaces wherein they have a low or high pressure midpoint, respectively. A hard coating is on the low and high pressure side surfaces. The hard coating has a minimum low and high pressure coating thickness at their respective midpoints. The minimum low, as well as high, pressure coating thickness ranging between about 0.085 and about 0.8 of either one of the maximum outlet coating thickness at the outlet distal end or the maximum inlet coating thickness at the inlet distal end, respectively.

Abstract: A movable blade for a turbomachine, the blade including at its distal end a top portion including opposite first and second side edges and upstream and downstream sealing wipers. Each of the first and second side edges has a substantially Z-shaped profile between the upstream and downstream wipers. On a side of the first side edge, the platform includes a first outwardly projecting rim not connected to either of the upstream and downstream wipers. The platform includes a second outwardly projecting rim, the second rim including a downstream portion connected to the downstream wiper and extending along the second edge, and an upstream portion extending the downstream portion as far as the upstream wiper, and set back relative to the second side edge.

Abstract: A piston-cylinder unit with a center longitudinal axis, a first end, a cylinder filled with a fluid, a piston arranged so as to be displaceable in the cylinder and which divides the cylinder into a first work space remote of the first end and a second work space close to the first end. A piston rod is arranged at the piston and projects through the first work space and is guided out of the cylinder concentric to the center longitudinal axis at a second end opposite the first end so as to be sealed by a guiding and sealing device, and a sensor device for direct or indirect detection of the internal pressure of the piston-cylinder unit.

Abstract: A wave energy converter (10) for extracting energy from waves in a body of liquid. The converter (10) comprises an inflatable sleeve (12) having an air inlet (14) at or towards one end and an air outlet (18) at or towards its other end. A flexible diaphragm (22) is located within the sleeve (12) so as to extend lengthwise thereof. The diaphragm (22) is sealingly engaged with the sleeve (12) along opposed, elongate edges (22a,22b) thereof. A flexible spine (24) is retained within the diaphragm (22) so as to extend lengthwise thereof. The spine (24) is fixed with the diaphragm (22), relative to the sleeve (12), at or towards each end of the sleeve (12). The converter (10) also comprises a loading device operable to apply an axial compressive force to the spine (24) relative to the sleeve (12) such that, on operation of the loading device, the spine (24) and the diaphragm (22) are buckled into a waveform (26) constrained within the sleeve (12).

Abstract: A compressor component having an improved airfoil profile so as to eliminate previously known vibratory issues in the blade tip is disclosed. By altering the airfoil profile throughout its span, the natural frequency of the airfoil is altered so as to not coincide with a critical engine order of the compressor. Further, the present invention provides a novel airfoil profile in accordance with the coordinates of Table 1.

Abstract: An actuator is equipped with a moveable part 160 that moves according to changes in an intake amount of air, a cylinder 140 that contains air and pumps the air through a fluid pipe 150 to the moveable part 160 according to pressure applied to the air, and a piston 130 that applies pressure to the air in the cylinder 140. Further, the actuator is equipped with a motor 100 that generates rotational force, and a screw 110 and a slide nut 120 that convert the rotational force to a force to move the piston 130. The air is enclosed in the moveable part 160, the cylinder 140 and the fluid pipe 150.