Abstract: A demand-based load balancing function may be provided by one or more drive controllers that takes advantage of the affinity laws to linearize the control of the variable of interest (e.g., flow, pressure, etc.). Each drive controller may be set up by the user simply inputting a few values into the drive controller. Based on the inputs, the drive controllers may interpolate control points using an assumed linear relationship between the variable to be controlled (e.g., pressure) and the current driven to the pump. Feedback data from the system may be used to continually update the drive controllers so as to potentially allow them to better balance power usage to each pump.

Abstract: A unison ring of a gas turbine engine includes: an annular body including fiber-reinforced resin or circular-arc bodies including the fiber-reinforced resin, the fiber-reinforced resin including resin and reinforced fibers; and pin holes in which a pin is in a radial direction orthogonal to an axial direction of the unison ring. A main orientation of the reinforced fibers of the fiber-reinforced resin is directed in a circumferential direction of the unison ring.

Abstract: Aspects of the disclosure disclose a turbine that includes multiple rotating sails and multiple stationary sails. A mastless vertical axis wind turbine includes a first plurality of sails that are configured to rotate about a vertical axis under the influence of wind. A platform is coupled to the first plurality of sails. During operation of the mastless vertical axis wind turbine, the platform is in tension with the first plurality of sails at one or more points about a particular end of the first plurality of the sails. The mastless vertical axis wind turbine also includes a second plurality of sails having respective first ends that are coupled together and second ends that are each coupled to one or more stationary surfaces. The second plurality of sails are configured to remain stationary as the first plurality of sails rotate under the influence of the wind.

Abstract: A nacelle of a wind turbine is disclosed. The nacelle comprises a rear frame structure (1) comprising a plurality of truss assemblies (2) being connected to each other at connecting regions (3). At least one of the truss assemblies (2) comprises at least one beam structure (4), the beam structure (4) comprising at 5 least a first beam member (5) and a second beam member (6) being arranged substantially in parallel to each other, thereby defining a longitudinal direction of the beam structure (4). The first (5) and the second (6) beam members are retained to each other by a retaining means (12). The retaining means (12) is configured to enable the first beam member (5) to slide relative to the second 10 beam member (6) along the longitudinal direction, e.g. by means of oblong slits (11) formed in the first beam members (5) and bolts (12) extending through the oblong slits (11) and being attached to the second beam members (6).

Abstract: A structure for a gas turbine engine includes a first engine component, a second engine component and fasteners. The component apertures include first fastener apertures and intergroup apertures. The first fastener apertures are arranged into a plurality of groups. The first group is formed by N1-number of the first fastener apertures. The second group is formed by N2-number of the first fastener apertures where the N2-number is different than the N1-number. Each of the intergroup apertures is disposed circumferentially between and adjacent a respective circumferentially neighboring pair of the groups. The second engine component includes a surface and second fastener apertures. The surface axially engages the first engine component and covers the intergroup apertures. The fasteners attach the first engine component and the second engine component together. Each of the fasteners is mated with one of the first fastener apertures and one of the second fastener apertures.

Abstract: Disclosed herein are example variable flowpath casings for blade tip clearance control. An example casing for a turbine engine includes an annular substrate extending along an axial direction, the annular substrate defining a cavity at a radially inward surface of the annular substrate, and a smart structure coupled to the annular substrate, the smart structure including a support structure; an actuator structure to at least one of expand or contract in response to a change in temperature of the actuator structure, and a variable surface coupled to the support structure, the support structure to move the variable surface in a radial direction.

Abstract: A gas turbine engine comprises a fan; an engine core comprising a compressor, a combustor, and a turbine coupled to the compressor through a shaft; a reduction gearbox; an Engine Section Stator (ESS) comprising a plurality of ESS vanes with an external surface washed by the core airflow; an ESS heating system adapted to heat the ESS vanes, and a temperature sensor adapted to detect the temperature of the external surface of the ESS vanes and send a signal to the ESS heating system when said temperature is below a reference temperature. Upon detection and/or inference of ice crystal conditions and receiving from the temperature sensor the signal that the temperature is below the reference temperature, the ESS heating system is activated to heat at least a portion of the external surface of the ESS vanes and promote melting and adhering of ice crystals thereto.

Abstract: The present disclosure relates to louvers for enabling an air passage between an outside and an inside. More particularly, the present disclosure relates to louvers enabling said air passage while minimizing rain ingress towards an interior and minimizing noise produced in the interior. The present disclosure further relates to wind turbines including said louvers.

Abstract: A rotor assembly may be used in a gas turbine. The rotor assembly includes rotor segments arranged in succession in an axial direction and interconnected in the axial direction by a tie-rod, and a rotor segment disposed forwardly in the axial direction having a first contact surface and a rotor segment disposed rearwardly in the axial direction having a second contact surface. The first and second contact surfaces are at least partially in contact with each other, are substantially annular in shape, and extend in a radial direction and in a circumferential direction. The first contact surface and/or the second contact surface extend at least partially obliquely relative to the radial direction. An angle is formed between the first contact surface and the second contact surface when viewed in a sectional plane defined by the axial direction and the radial direction.

Abstract: Turbomachine components and compressors are provided. The turbomachine component includes a platform and a mounting portion that extends from the platform. The mounting portion includes a dovetail received by a slot defined in the turbomachine. The slot includes a floor and a ceiling. The dovetail includes an inner surface and an outer surface. A hole is defined in the dovetail from an inlet at the inner surface to an end wall. The hole has a cylindrical portion and a tapered portion. A mechanical spring is disposed within the hole and in contact with the floor and the end wall such that the outer surface of the dovetail is forced into contact with the ceiling of the slot.

Abstract: A motor adapter assembly can couple a motor shaft for a ceiling fan motor to a downrod. The motor adapter assembly can include a base plate, a cradle with arms extending through the base plate, and a threaded bushing secured between the arms of the cradle. Threading a cap to the threaded bushing can be used to pivot the downrod between an upright position and a pivoted position.

Abstract: A turbine shroud assembly includes a carrier segment and a blade track segment. The carrier segment includes an outer wall, a first mount flange, and a second mount flange having a chordal seal. The blade track segment includes a shroud wall and an attachment feature. The mount assembly couples the blade track segment to the carrier segment.

Abstract: A stator vane assembly for a gas turbine engine is disclosed. The stator vane assembly includes an inner carrier including a metallic material and an outer carrier including a metallic material. The stator vane assembly further includes a ceramic-containing airfoil that extends from the inner carrier to the outer carrier and is at least partially received by the inner carrier and the outer carrier. The stator vane assembly further includes a load transfer device disposed between the airfoil and at least one of the inner carrier and the outer carrier. The load transfer device includes a support member fixedly attached to the at least one of the inner carrier and the outer carrier, and a plurality of micropillars coupled to the support member and extending towards the airfoil. Each micropillar is deformable and engages the airfoil.

Abstract: A system and a method include an engine having one or more vanes. An actuator is coupled to the one or more vanes. The actuator is configured to move the one or more vanes between different positions. A control unit is coupled to the actuator. The control unit is configured to operate the actuator to move the one or more vanes between the different positions. The control unit is disposed on or within the engine.

Abstract: An oscillating fluid energy capturing assembly, including at least one hinged propeller assembly, each hinged propellor assembly of the at least one hinged propeller assembly including a driveshaft including a first end and a second end, a first plurality of blades pivotably connected to the first end, and a second plurality of blades pivotably connected to the second end.

Abstract: The present invention relates to a device for cooling, using air jets, an external casing of a turbomachine, comprising a housing for supplying air to cooling tubes of said casing, the housing being provided with an attachment device on the external casing. According to the invention, said attachment device comprises two upstream ball joint retention devices which each connect the housing to the external casing.

Abstract: The invention relates to a turbine assembly comprising: a plurality of ring sectors forming a ring; a support structure comprising a shroud from which there project radial flanges which serve to hold latching tabs of each ring sector; a stator positioned downstream of said ring and comprising a blade provided with a radially outer platform and extending axially opposite said ring; an annular space being defined between the ring, the support structure and the platform, this annular space having passing through it a leakage air current, the assembly comprising a hollow ring which occupies said annular space and which is shaped so as to collect, channel and expel said leakage air current, more specifically to channel and expel it into the radially inner region of said annular space.

Abstract: A tower and a wind turbine and be able to shoot water from the center point of a three to five blade wind turbine in a concentrated direction and from the blades to disperse water/fire retardant in a light to heavy spray from the tips of the blades covering a wider area for creating clean energy and suppressing wildfires.

Abstract: Exhaust outlets (e.g., in a gas turbine engine) are generally made from sections of thin-walled materials (e.g., sheet metal) that are joined by flanges. Due to the length of the exhaust outlet and differing thermal expansion coefficients exhibited by the flanges and the thin-walled materials, these joints are subjected to high mechanical, as well as thermal, stresses. A long-arm flange is disclosed that decouples the mechanical stress from the thermal stress in the flange and distributes the stress, to thereby reduce the stress at the flange interface. Additionally, the long-arm flange can be easily adapted to the specific geometry of any exhaust outlet.

Abstract: A dual walled component includes a spar comprising a plurality of pedestals; a coversheet attached to a first set of pedestals from the plurality of pedestals; and a repaired coversheet portion attached to a second set of pedestals from the plurality of pedestals and to the coversheet, where the repaired coversheet portion includes a braze material.