Abstract: A component for a gas turbine engine, including: at least one internal cavity extending through the component, the internal cavity having at least one inlet opening and at least one outlet opening each being in fluid communication with the at least one internal cavity; a plurality of cooling features extending from a surface of the at least one internal cavity, the plurality of cooling features are formed in accordance with at least one of the following groups: i) a plurality of airfoil shaped features that extend upwardly from the surface of the at least one internal cavity and a plurality of wedge shaped features each having a triangular base that has an upstream portion and a downstream portion, the upstream portion extending further from the surface than the downstream portion; ii) a plurality features having a curved or “J” shaped base that extends upwardly from the surface, a plurality features having a double curved or symmetrically “J” shaped base that extends upwardly from the surface, and a pluralit

Abstract: A rotary fluid machine includes a casing, a partition member that partitions a space in the casing into a first space and a second space, and a rotary shaft provided in the casing. The rotary shaft is rotatably supported. The partition member includes a thrust magnetic bearing that supports the rotary shaft in an axial direction.

Abstract: A fan apparatus has a housing with an enlarged portion defining at least one air intake and an outlet portion defining an outlet port. The outlet port has a greater width and a lesser height. A blower wheel having a plurality of fan blades is supported in the enlarged portion of the housing for rotation about an axis. A driver is connected to the blower wheel to cause rotation of the blower wheel. A flow straightener assembly is located in the outlet portion of the housing. The flow straightener assembly has first and second fins spaced apart from one another and oriented substantially orthogonal to the axis of the blower wheel. Third and fourth fins are located outside of a respective one of the first and second fins, the third and fourth fins being oriented substantially parallel to the axis of the blower wheel.

Abstract: A method for controlling a wind turbine to decrease blade deflection during tower passage is disclosed. A blade flap moment of the wind turbine blades is measured. A blade flap moment of the wind turbine blades and a rotor tilt moment in a situation where the pitch offset has not been added are estimated, based on the measured blade flap moment. In the case that the estimated blade flap moment exceeds a first activation threshold value and the estimated rotor tilt moment exceeds a second activation threshold value, individual pitch angle adjustment of the wind turbine blades is initiated by adding a pitch offset, at azimuth angles within an azimuth adjustment region corresponding to tower passage of the wind turbine blades.

Abstract: A retention assembly for a fan case liner including a retention bracket including a tab; a damper comprising a forward end opposite an aft end, the damper comprising an exterior surface extending between the forward end and the aft end, the damper having at least one slot formed in the exterior surface; a bracket slot formed in the damper proximate the aft end, the bracket slot configured to receive the tab; and the fan case liner comprising a fan case liner receiver configured to receive the damper, wherein the retention bracket and damper support the fan case liner.

Abstract: A grinder pump comprising a volute housing and a cutting assembly including a cutter plate comprised of a mounting flange and a cutting disc. The volute housing has a mounting shoulder that is joined to the mounting flange of the cutter plate. The mounting flange includes a mounting surface joined to the mounting shoulder of the volute housing. The mounting flange is comprised of an outer side wall, an inner region, and an inner side wall. The cutting disc is bounded by an inner surface, an outer surface, and a lateral side wall, and includes an outer region contiguous with the inner region of the mounting flange. The inner surface of the cutting disc and the inner side wall of the mounting flange form a cylindrical recess in the cutter plate.

Abstract: A motion controller for a floating wind turbine including a number of rotor blades is provided. The motion controller is arranged to adjust the blade pitch of each rotor blade when the floating wind turbine is operating in winds below the rated wind speed so as to create a net force that damps a surge motion of the floating wind turbine. Also provided is a method of damping the motion of a floating wind turbine and a wind turbine having such a motion controller.

Abstract: A hub assembly for a wind turbine includes a hub having a surface defining a first set of bolt holes and a shaft having a flange having a second set of bolt holes. The first set of bolt holes is aligned with the second set of bolt holes at a hub-shaft interface. The hub assembly also includes a plurality of hub bolts extending through the first and second sets of bolt holes at the hub-shaft interface, a plurality of washers with one of the plurality of washers extending around each of the plurality of hub bolts, and at least one spacer positioned between the surface of the hub and a subset of the plurality of washers. At least two of the plurality of hub bolts extend through the at least one spacer.

Abstract: A bladeless impeller and a bladeless axial pump having such an impeller, wherein the impeller has at least one rigid body suitable for rotating around at least one axis of rotation, and at least one helical groove located in the body, forming a passage between two parts of the body.

Abstract: Modular wind turbine blade designs include a plurality of modular sections that are attached to each other on site. Each section preferably includes a cross member and a plurality of lengthwise members. A plurality of fasteners are used to secure a cross member between end flanges of first and second sets of lengthwise members. The plurality of lengthwise members and cross members are covered with an outer skin. A weight system is preferably retained in an inner perimeter of a plurality of first lengthwise members. The weight system preferably includes a lengthwise frame, a rail structure, a sliding weight and at least one weight motor. A plurality of fins may be attached to a bottom surface of a modular blade assembly. A fin actuation mechanism may be used to move the position of a plurality of fins relative to a bottom surface of the modular blade assembly.

Abstract: A method of controlling a wind turbine having a tower and a rotor at which plural rotor blades are mounted includes: determining, in particular in real time, a damping characteristic of at least one vibration mode related to the wind turbine; and controlling the wind turbine based on damping characteristic.

Abstract: A controlled area progression diffuser for a compressor may be defined by a bearing diffuser face of a bearing housing and a compressor diffuser face of a compressor housing that are spaced apart by a diffuser width, and airflow from a compressor wheel enters the controlled area progression diffuser through a diffuser inlet, flows between the diffuser faces, and flows out of a diffuser outlet to a volute. The diffuser faces may be shaped so that the diffuser width decreases as the controlled area progression diffuser extends radially away from the compressor wheel toward the volute so that an annulus area of the controlled area progression diffuser does not increase linearly for at least a portion of a radial length of the controlled area progression diffuser.

Abstract: A vacuum pump includes a vacuum pump main body and a bottom fixing member. The vacuum pump main body has a bottom surface and a side surface. The side surface has a pump-side flat surface formed so as to extend from the bottom surface. The bottom fixing member is fastened to the bottom surface of the vacuum pump main body. The bottom fixing member has a fixing-side flat surface facing the pump-side flat surface.

Abstract: A lift system for pumping fluid from a well has a drive mechanism, a submersible pump, a gear assembly, and input and output shafts rotated by the drive mechanism extending through and into the pump.

Abstract: Smart fans are described that can be used in any application in which a flow of a fluid, such as air, is required. In two specific applications, one or more of the fans can be used to conduct a blower door test or a duct leakage test. However, the smart fans described herein can be used in other applications.

Abstract: An assembly is provided for an aircraft propulsion system. This assembly includes a nacelle inlet structure extending axially along and circumferentially about an axis. The nacelle inlet structure includes an inlet lip, an inner barrel, an outer barrel and a plurality of supports. The inlet lip forms a leading edge of the nacelle inlet structure. The inner barrel projects axially aft away from the inlet lip. The outer barrel projects axially aft away from the inlet lip. The outer barrel is radially outboard of and axially overlaps the inner barrel. The supports are arranged circumferentially about the axis in an array. Each of the supports extends longitudinally along the axis. Each of the supports extends radially between and is connected to the inner barrel and the outer barrel.

Abstract: A pitch assembly for a wind turbine includes a pitch bearing comprising an inner race, an outer race, and a plurality of gear teeth arranged on one of the inner race or the outer race. The pitch assembly further includes a pitch drive mechanism having a pitch drive motor and a primary pitch drive pinion. The primary pitch drive pinion is configured to rotate one of the inner race or the outer race of the pitch bearing about a pitch axis by engaging with a first set of the plurality of gear teeth. The pitch assembly also includes a secondary pinion engaging a second set of the plurality of gear teeth. The secondary pinion is constructed of a deformable material such that backlash is eliminated between the secondary pinion and the plurality of gear teeth, thereby minimizing micro-pitching of the pitch assembly.

Abstract: A device configured to generate an air flow, the device including: a compressor; an air flow duct arranged to convey a flow of air generated by the compressor; a gas-filled cavity disposed beside the air flow duct; a wall separating the air flow duct and the cavity, the wall including at least one aperture; and an acoustic resistive screen covering and held in tension over the aperture of the wall. The screen is in fluid contact with air in the air flow duct and gas in the cavity and is configured to resist air flow between the duct and the cavity. The resistive screen and the cavity together define a noise-damping resonator.

Abstract: A blade root cover segment suitable for fitting to a wind turbine blade to span a gap between the blade and a spinner cover. The blade root cover segment includes a first end and a second end and further includes a curved flange for abutting against a correspondingly curved surface of the wind turbine blade; a cover wall extending radially from the flange; and a tensioning band associated with the flange. The tensioning band includes a first end proximate to the first end of the blade root cover segment and a second end proximate to the second end of the blade root cover segment. The first end and the second end of the tensioning band include connection means for connecting with and applying tension between a like blade root cover segment. A blade root cover and a method of assembling a blade root cover are also provided.

Abstract: A component for a gas turbine engine. The component includes a continuous fiber blade including an airfoil extending radially between a root and a tip and a blade attachment feature positioned at or adjacent to the root. The component further includes a platform coupled to the root of the continuous fiber blade. The platform includes a plurality of chopped fibers. Additionally, the component includes a thermoplastic polymer contained in both the continuous fiber blade and the platform. Moreover, the continuous fiber blade and platform are coupled together such that the continuous fiber blade and platform form a monolithic composite body.