Some embodiments include a mounting system for mounting the device in a fluid, an axle fixed to the mounting system, a solid walled hollow body that rotates about the axle having axial symmetry about a longitudinal axis. The solid walled hollow body may be substantially rounded at the front, expanding to a maximum diameter less than half the distance from the front end to the back end, and tapering radially along the longitudinal axis to the back end. The energy device may further comprise a plurality of blades on the exterior of the hollow body, each blade extending from the front end of the solid walled hollow body to the back end, rising to a maximum height, and having concave and convex walls.

A method of assembling a wind turbine blade from wind turbine blade elements is provided. The method comprises joining the elements via a taper joint around the whole circumference of the blade.

A component for a gas turbine engine includes at least one airfoil that has a radially inner end and a radially outer end. A platform has a gas path side that supports the radially outer end of the at least one airfoil and a non-gas path side. A hook is supported by the platform and has an anti-rotation surface that faces in a circumferential direction. A conical surface is spaced axially forward of a base portion of the hook. A triangular base surface intersects the anti-rotation surface and is spaced radially outward from the conical surface.

A WaveAnchor and method of installing the WaveAnchor to stabilize the wave-induced rocking action of a boat, vessel or other floating platforms is provided. The present invention includes a method of creating downward pull on the WaveAnchor cables, which serves to stabilize a rocking boat or vessel, and further for harvesting the force of this downward pull for purposes of electrical generation by attaching the rope or cable from the WaveAnchor described above to a rotating shaft on the floating platform. Critical to this invention is the deployment of many such WaveAnchor devices around the edges of the floating platform, each of which transfers power to the central shaft. The power generation achieved by the WavePower platform with its deployed WaveAnchors is enhanced by the use of a floating platform which is not stable as it naturally rocks with wave action.

An energy conversion system for converting wind energy into electrical energy includes at least one rotor having a substantially horizontal rotational axis and a plurality of rotor blades extending radially with respect to the rotational axis; a rotor mantle which fully surrounds the rotor; a plurality of wind funnels, including a first wind funnel arranged upstream of the rotor mantle and tapering towards the rotor mantle, and a second wind funnel arranged downstream of the rotor mantle and widening in a direction leading away from the rotor mantle; and a fixed frame which supports the rotor mantle and/or the plurality of wind funnels, wherein at least one adjustment device is provided, which is arranged and configured to orient the energy conversion system in a position corresponding to a prevailing wind direction.

A component for a gas turbine engine includes at least one airfoil that has a radially inner end and a radially outer end. A platform has a gas path side that supports the radially outer end of the at least one airfoil and a non-gas path side. A hook is supported by the platform and has an anti-rotation surface that faces in a circumferential direction. A conical surface is spaced axially forward of a base portion of the hook. A triangular base surface intersects the anti-rotation surface and is spaced radially outward from the conical surface.

Provided is a method for manufacturing tapered root segment sections for a root segment of a turbine blade, in particular a wind turbine blade, wherein the method includes the steps of: (a) winding multiple layers of a fabric around a winding core in a way such that a multilayered structure from the fabric having a shape tapered transverse to a direction of the winding is obtained, (b) applying adhesive to the fabric, (c) curing the adhesive applied to the fabric of the multilayered structure wound around the winding core, so that a cured multilayered structure is obtained, (d) separating the cured multilayered structure from the winding core, and (e) cutting the cured multilayered structure into the tapered root segment sections. A method for manufacturing the root segment of the turbine blade and a method for manufacturing the turbine blade is also provided.

A rotor blade for a wind power generator which is a lift type blade having a wide chord length at a blade end portion. The rotor blade (1) comprises a side surface with a thickness that gradually decreases from a blade root (1A) to a blade end portion, and a front surface (1D) which gradually inclines in a direction of a back surface (1E) from the blade root (1A) to the blade end portion. Owing to a difference in the thickness, a speed of airflow passing in a chord direction at the blade root, when the rotor blade is rotating, increases at the blade end portion, and air pressure at the blade root is reduces at the blade end portion, and airflow concentrating, due to the reduction of the air pressure at the blade root, naturally moves to the blade end portion due to a difference in the air pressure.

The invention provides a hinged raft wave energy conversion device (WEC) comprising: a first fore floating body; and a second aft floating body; wherein the first and second floating bodies are connected by a hinge joint for rotation of the bodies relative to each other, in use, about an axis parallel to the still water surface and transverse to the direction of wave propagation; wherein the first and second bodies extend away from the hinge joint in opposite directions; and wherein at least one of the first and second bodies has a sloped surface extending in the direction away from the hinge joint, at least a portion of the sloped surface being under the waterline at least when the device is in the still water rest position.

Provide is a rotor blade for a wind turbine, including a hollow blade body with a root and a tip, wherein the blade body is split along a split plane into two body parts, one extending from the root to a first connection section and the other extending from a second connection section to the tip, wherein the first and the second connection sections are adapted to overlap each other in the connected position.