A method for assembling a modular foundation of a wind turbine having a base and a plurality of foundation sections includes positioning the base of the foundation on a support surface, arranging a plurality of tensioning elements so as to extend from the base to a second location spaced from the base, and stacking a plurality of foundation sections on the base by guiding the foundation sections from the second location toward the base using the tensioning elements. A modular wind turbine foundation includes a base positioned on the seabed; a plurality of tensioning elements extending from the base to a location adjacent the surface of the water; and a plurality of serially stacked foundation segments on top of the base.

A fan includes a motor base, a bearing, an impeller, a stator and a magnetic element. The motor base has a bearing stand in a center portion thereof. The bearing is accommodated within the bearing stand. The impeller includes a metallic case, a hub, plural blades and a rotating shaft. The metallic case has a top wall and a sidewall. The hub is sheathed around the metallic case. The blades are disposed around an outer periphery of the hub. The rotating shaft is inserted into a central opening of the top wall and penetrated through the bearing stand, wherein no raised ring structure is formed in the top wall of the metallic case, and the rotating shaft and the metallic case are jointed together by a laser welding process. The magnetic element is disposed on an inner wall of the metallic case and aligned with the stator.

An apparatus comprising a soft in plane rotor yoke comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material having a plurality of first fibers oriented in a first direction, and a plurality of second layers formed of a second composite fabric material having a plurality of second fibers oriented in a second direction. Included is an apparatus comprising a soft in plane rotor comprising two longitudinal side portions connected together via two outboard portions, wherein the outboard portions comprise a plurality of first layers formed of a first composite fabric material, and a plurality of second layers formed of a second composite fabric material, wherein the soft in plane rotor yoke does not comprise any narrow steered slit tape or filament windings.

A system for a wind turbine rotor blade, the system includes a pitch system that has a pitch bearing and a wind turbine hub, the bearing being attached to the hub and being attachable to a wind turbine rotor blade, and also including a pitch gear coupled to the pitch system. The pitch gear includes a first discrete segment and one or more other discrete segments, each segment having a plurality of teeth for engaging with and actuator such as a pinion. At least the first segment is held in place by releasable fasteners and extends along the pitch gear by a predetermined amount. The predetermined amount that the first segment extends along the pitch gear is determined based on anticipated wear of the pitch gear.

A method of forming a component for use in a gas turbine engine includes the steps of forming an airfoil/root assembly; creating a platform assembly structure having an opening; inserting the airfoil/root assembly into the opening; and bonding the platform assembly structure to the airfoil/root assembly to form the component.

A vane tip machining fixture assembly includes a first clamp ring mountable to a fixture, the first clamp ring includes a rigid back ring mounted to a resilient ring.

The invention relates to the fastening of rotor blades to the rotor hub of wind turbines using transverse pins and tension rods in the region of the blade root. The transverse pins are arranged throughout the entire blade root shell wall and can be connected to a flange of the hub by the tension rods in the form of expansion screws. Each transverse pin (4) can be connected to the flange (2) of the rotor hub (1) by two tension rods (5, 6). Each tension rod (5, 6) is arranged in a separate tension rod bore (7, 8) in the blade root shell wall (3).

A bioreactor has a stirrer shaft that is driveable by a drive and on which a stirrer element is positioned. The position of the stirrer element is determined by a stirrer installation aid. The stirrer installation aid has a free end with an abutment surface on which the free end of the stirrer element abuts. The stirrer installation aid is designed as a sleeve that comprises a slot extending between the axial ends of the sleeve. The slot is delimited by opposite flanks of a wall, and the sleeve is placed on the stirrer shaft. The stirrer installation aid can be pulled off laterally from the stirrer shaft. A method for installing the stirrer element on the stirrer shaft arranged in the bioreactor also is provided.

A method for producing a rotor, particularly a turbine disk or a turbine ring for a turbine stage of a turbomachine, wherein at least the following steps are carried out: producing a blade ring (14) including a plurality of rotor blades (12), welding adapters (22) together which are disposed in the region of blade footings of the rotor blades (12), wherein at least substantially radial weld seams (30a) having predetermined welding depths are generated, disposing a rotor disk (32) or a rotor ring on the blade ring (14), and welding the rotor disk (32) or the rotor ring to the adapters (22) of the rotor blades (12), wherein at least one further weld seam (30b) is generated. A rotor, particularly a turbine disk or a turbine ring for a turbine stage of a turbomachine is also disclosed.

A turbo fan engine includes a housing that supports a compressor section. At least one compressor hub is within the compressor section. A compressor shaft is arranged in the compressor section. An epicyclic gear train is coupled to the compressor shaft. At least one compressor hub and the compressor shaft are coupled at a common attachment point. The epicyclic gear train includes a carrier. A sun gear and intermediate gears are arranged about and intermeshing with the sun gear. The intermediate gears are supported by the carrier. A baffle is supported relative to the carrier and includes a lubrication passage near at least one of the sun gear and intermediate gears for directing a lubricant on at least one of the sun gear and the intermediate gears.