Abstract: Provided is a rotor blade of a wind turbine, wherein the rotor blade includes a trailing edge section with a trailing edge and a leading-edge section with a leading-edge, a root section with a root and a tip section with a tip, a shell which defines the outer shape of the rotor blade and a cavity which is confined by the shell, and a lightning protection system with an internal down conductor extending from the root section of the rotor blade to the tip section of the rotor blade, wherein the internal down conductor is connectable at the root section to a grounding system of the remainder of the wind turbine and at the tip section to at least one tip lightning receptor which is positioned at the surface of the rotor blade. In addition, the rotor blade comprises an electrically insulating tip part.

Abstract: A steam turbine blade includes a blade body (7) including blade surfaces (70) extending in a blade height direction. The blade body (7) includes a first suction port (74) extending in the blade height direction and opening in the blade surface (70), a first drain flow path (75) internally extending in the blade height direction, and first communication passages (76) internally provided away from one another in the blade height direction and independently of one another and making the first drain port (74) and the first drain flow path (75) in communication with each other.

Abstract: A wind turbine (1) comprising a tower (2), a nacelle (3) mounted on the tower (2) via a yaw system, a hub (4) mounted rotatably on the nacelle (3), the hub (4) comprising a blade carrying structure (5), and one or more wind turbine blades (6) connected to the blade carrying structure (5) via a hinge (7) is disclosed. Each wind turbine blade (6) is thereby arranged to perform pivot movements relative to the blade carrying structure (5) between a minimum pivot angle and a maximum pivot angle. The blade carrying structure (5) is provided with one or more elements (8) configured to improve aerodynamic properties of a surface of the blade carrying structure (5) by increasing a lift and/or decreasing a drag of the blade carrying structure. The increase in lift and/or decrease in drag varies as a function of angle of attack (AOA) between the blade carrying structure (5) and the incoming wind.

Abstract: A blowing system includes: a first blowing unit including a first body that houses a first fan and includes a first air outlet for blowing-out wind from the first fan; a second blowing unit including a second body that houses a second fan, includes a second air outlet for blowing-out wind from the second fan, and has a shape that is in two-fold symmetry with the first body; and a first connection that rotatably-connects an edge on a back face-side of a first side face of the first body and an edge on a back face-side of a second side face of the second body so that an angle formed by the first and second bodies is variable. The first and second blowing units come into contact at three or more points, and the directions of respective rotation axes of the first and second fans cross at a predetermined angle.

Abstract: A variable capacity turbocharger may include a turbine housing, a variable capacity mechanism, and a cover. The turbine housing may include a scroll flow path, a cylindrical portion having a shroud surface facing blades of a turbine impeller, and an exhaust gas outlet flow path. The variable capacity mechanism may be attached to the turbine housing and may include a first plate and a second plate facing each other, and a plurality of variable nozzle vanes disposed between the first plate and the second plate. The cover may be disposed outside the cylindrical portion in a radial direction to face the second plate in an axial direction and to form a part of the scroll flow path. The cover may be attached to the turbine housing such that a gap is formed between the cover and the second plate.

Abstract: A pin assembly according to an exemplary embodiment of this disclosure, among other possible things includes a spring housing, a spring situated in the spring housing, a pin having a first end configured to be received in the spring housing and to engage the spring, and a boot configured to receive a second end of the pin. The boot is configured to span a gap between first and second adjacent components and configured to transfer a spring force from the spring to the first and second adjacent components. A vane assembly and a method of assembling a vane assembly are also disclosed.

Abstract: A hand-guided working apparatus has a radial fan. The radial fan includes a fan impeller and an air duct, which has a spiral portion surrounding the fan impeller and has a duct cross section, which increases in the air flow direction. An outlet funnel portion adjoins the spiral portion, widens in a funnel shape in the air flow direction and has a radially inner boundary wall and a radially outer boundary wall. The outlet funnel portion ends in an air outlet opening, the outlet width of which is smaller than an outside diameter of the fan impeller. The radially inner and/or the radially outer boundary wall of the outlet funnel portion has a curvature opposed to that of the spiral portion. An intermediate wall is arranged in the outlet funnel portion, between the radially inner and the radially outer boundary wall.

Abstract: A bracket for a transport frame, configured to hold a hub of a wind turbine in place at the transport frame during transport of the hub, the bracket holding the hub during the transport of the hub and mechanically connecting a holding device and the transport frame for attaching the holding device at the transport frame, for moving the holding device relative to the transport frame, and for moving a contacting portion of the holding device against the hub, which is arranged in a predetermined position on the transport frame is provided. A transport frame is also provided that includes, at least one bracket.

Abstract: Blowers having noise reduction features are provided. A blower may include a main body defining an airflow path therethrough, the main body extending between and defining an inlet end and an outlet end. The blower may further include an inlet muffler provided at the inlet end. The inlet muffler includes a plurality of inlet ports, each of the plurality of inlet ports including a peripheral surface defining a port aperture therethrough. At least one of the plurality of inlet ports further includes a damper material provided on the peripheral surface of the at least one inlet port and further defining the port aperture therethrough.

Abstract: Provided is a beam for a wind turbine blade of a wind turbine, whereby the beam is made from a composite material including a matrix and a reinforcement, the beam having a length in a longitudinal direction of the beam, a width in a width direction of the beam and a thickness in a thickness direction of the beam. The beam includes at least one longitudinal recess arranged in the longitudinal direction of the beam, whereby the at least one longitudinal recess separates the beam into adjacent longitudinal beam portions, whereby the longitudinal recess has the width or the thickness of the beam.

Abstract: An engine pod for a gas turbine engine which includes a pod wall having an inside and an outside. The pod wall includes a fixed downstream portion and a displaceable upstream portion which is displaceable in the axial direction between a first upstream position and a second downstream position. At its downstream end facing the fixed portion, the upstream portion forms a radially outer rear edge and axially spaced therefrom a radially inner rear edge, with a recess in between. It is provided that adjacent to the recess, an air-permeable structure is formed in the upstream portion which is intended and configured, in the first upstream position of the displaceable portion, to conduct air flowing in the region of the recess to the inside of the displaceable portion. According to a further aspect of the invention, the axial position of the radially inner rear edge varies in the circumferential direction.

Abstract: An assembly for a turbomachine including a first rotor module (2) with a first blade (20), and a second rotor module (3), connected to the first rotor module (2). The second rotor module includes a second blade with a smaller length than the first blade (20). A damping device (4) is attached to the second rotor module (3) and includes a radial external surface (40) supported with friction against the first module (2), so as to couple the modules (2, 3) for the purpose of damping their respective vibrational movements during operation.

Abstract: A bracket for a transport frame, configured to hold a hub of a wind turbine in place at the transport frame during transport of the hub, the bracket holding the hub during the transport of the hub and mechanically connecting a holding device and the transport frame for attaching the holding device at the transport frame, for moving the holding device relative to the transport frame, and for moving a contacting portion of the holding device against the hub, which is arranged in a predetermined position on the transport frame is provided. A transport frame is also provided that includes, at least one bracket.

Abstract: A method of operation for a gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, reducing a rotational speed of a fan relative to a shaft through a gear train, driving the shaft with a low pressure turbine, driving a high pressure compressor with a high pressure turbine, communicating airflow from the fan through a bypass passage defined by a nacelle, the nacelle extending along an engine axis and surrounding the fan, discharging the airflow through a variable area fan nozzle defining a discharge airflow area, detecting an airfoil flutter condition associated with adjacent airfoils of the fan, and moving the variable area fan nozzle to vary the discharge airflow area and mitigate the airfoil flutter condition.

Abstract: A rotor hub assembly that includes a yoke configured to attach blades thereto, a universal joint configured to attach to, and transmit forces between, a mast and the yoke, and an elastomeric member configured to attenuate vibrations transmitted from the universal joint to the mast.

Abstract: An air-sending device includes a fan and a grille provided downstream of the fan in a direction of airflow generated by the fan. The grille includes a first grille that includes a plurality of first bars spaced from each other, and a second grille that includes a plurality of second bars spaced from each other. The plurality of second bars are more densely arranged than the plurality of first bars. The second grille is provided upstream of the first grille in the direction of the airflow generated by the fan, and spaced from the first grille to face the first grille.

Abstract: A turbine engine including: a rotor supporting a blade and guided by means of bearings; a control system for controlling the blade, which is solidly connected to the rotor and which includes an actuator driven by energy, the control system being disposed axially upstream of the bearings; and a device for transferring the energy, disposed axially between the bearings and including a stationary member and a moving member. The rotor includes a support ring supporting the blade and a shaft having a frustoconical portion and a cylindrical portion on which the bearings and the moving member are mounted, the frustoconical portion extending about the cylindrical portion.

Abstract: An axial ventilator (1) has a housing (2) and a fan wheel (3) arranged in the housing (2) to generate an axial air flow through the housing (2). The fan wheel (3) has multiple fan wheel blades (4) that extend radially outward from a hub (5) up to a respective blade tip (8). The blades extend spaced apart from an inner wall of the housing (2) via a head gap (12). The fan wheel blades (4) have boreholes (7) along the respective blade tip (8).

Abstract: An apparatus and method for cooling a component for a turbine engine which generates a hot gas flow and provides a cooling fluid flow, the component comprising a body having an outer surface, at least a portion of which is exposed to the hot gas flow to define a hot surface, a cooling cavity located within the body and fluidly coupled to the cooling fluid flow and a pin located within the cooling cavity and defining a cooling hole.

Abstract: An electric motor assembly includes an electric motor, a fan assembly coupled to the electric motor and configured to rotate therewith about an axis. The fan assembly includes a hub including a cylindrical portion having an inlet end and an outlet end, the hub further including an inlet surface coupled to the inlet end. The fan assembly also includes a plurality of blades coupled to an outer periphery of the cylindrical portion, wherein the inlet surface is tapered to direct an inlet airflow toward the plurality of blades.