A ram air turbine rotor comprises at least one intra-flow path shroud structure coupled between rotor blades, along a radial position between a support disc and an outer rim. The shroud structure includes shroud sectors each coupled between a respective pair of blades. The sectors each include a first edge adjacent to leading edges of the respective pair of blades, the first edge including a first curved segment, and a second edge adjacent to trailing edges of the respective pair of blades, the second edge including a second curved segment. The curved segments are each partially defined by a respective ellipse having a semi-major axis and a semi-minor axis. The semi-major axis is a portion of a spanwise distance between the respective pair of blades. The semi-minor axis is a portion of an axial distance between the leading edge of one blade and the trailing edge of an adjacent blade.

A platform for exploiting the energy contained in waves operating in a marine environment and floating on the sea is disclosed. This comprises a submerged portion existing below a sea surface, an emerged portion existing above the sea surface, and a partially submerged wave power generation mechanism portion including the sea surface and coupling the submerged portion and the emerged portion.

The invention relates to a toroidal electric generator (100) comprising a stator (20), which includes a tubular body (21) supporting a plurality of windings (24), and a rotor (30) rotatable within the stator (20) and comprising a support element (31) and a plurality of hydraulic blades (32), each provided with a respective magnet (34) and mounted on the support element (31) integral to it. The toroidal electric generator (100) further comprises an external casing (40) and a plurality of separating elements (51, 52), each separating element being arranged between a respective pair of adjacent windings (24) of the plurality of windings (24) of the stator (20).

A damless hydroelectric power plant can be used in installations for converting the kinetic energy of a gravity flow of water into electrical energy. A part of the housing of the hydroelectric power plant, in which the bladed wheel is placed, is in the form of an annular tunnel. Annular support guides on which the bladed wheel is supported are fixed in several rows on vertical struts of the tunnel inside the latter on both sides thereof. The annular tunnel structure is connected to a central bushing through tension members and to the containers, some of which contain a constant volume of air, while the others contain an adjustable volume of air. In each wheel sector, the bladed wheel comprises several rows of support rollers fixed on the vertical struts on the outside of the outer and inner wheel rims and having both horizontal and vertical rotation axes and provided with springs through which the wheel cooperates with the annular support guides of the tunnel, and gear sectors arranged in several rows fixed on the vertical struts of the outer wheel rim on each wheel sector and allowing for pulling the chains kinematically connected with a rotation multiplier and an electric power generator when rotating the bladed wheel.

A fluid connection for a hydromotive machine or fluid-control valve having a first duct and a second duct. The first duct includes a mid-portion between a first end of the first duct and a second end of the first duct that has a non-circular cross-section. A second end of the first duct is wholly within the second end of the second duct. A first end of the second duct is wholly outside of the first duct.

A buoyancy driven water wheel has a circular frame partially disposed in a water tank, an air valve provided in the center of the circular frame in fluid communication with an air source, a plurality pipes, each pipe having a proximal end in fluid communication with the air valve, and a distal end on the circumference of the wheel frame one or more airbags provided at the distal end of and in fluid communication with each of the pipes, a gear shaft extending from and fixed to the center of the circular frame, and one or more supports to position the circular frame within the water tank, wherein the air valve directs air from an air source to the one or more airbags at an underwater inflation position, and wherein inflation of the airbags at the underwater inflation position rotates the circular frame.

A gravity-based foundation for the installation of offshore wind turbines, manufactured in a floating dock for towing to the final destination thereof, where it is anchored and finally completely submerged below sea level, comprising a concrete floating caisson, in the shape of a prism, with a hexalobular base, divided into several cells by at least one partition with a significantly circular cross section, concentric with a central cell, determining inner vertical cells interconnected with each other and with the exterior, which is closed at the top by a cover or covers that are removed once the foundation is anchored before being filled with a ballast material.

A latch handle is disclosed. The latch handle may comprise a first portion and a second portion. The first portion may comprise a high aspect ratio. The second portion may have a width greater than the second portion. A nacelle is disclosed. The nacelle may comprise a first panel and a latch assembly. The latch assembly may include a latch housing and a latch handle. The latch handle may include a first portion and a second portion. The first portion may comprise an aspect ratio greater than one. The second portion may have a width greater than the width of the first portion. A cut-out configured to accommodate the latch assembly may be disposed on the first panel. The first panel may be a fan cowl panel.

A tidal current energy generating device includes an outer frame (1), at least one inner frame (2), at least two hydro turbines (3), at least one center shaft (4), at least one generator (5), and at least three bearings (6). The at least one inner frame (2) is separably disposed in the outer frame (1). At least two hydro turbines (3) are located below a water surface and are disposed in one inner frame (2). At least two hydro turbines (3) are disposed coaxially and are vertical-axis hydro turbines. At least one center shaft (4) is disposed through the at least two hydro turbines (3), the axis direction of the center shaft is perpendicular to the horizontal plane, and the center shaft (4) rotates along with the rotating of the hydro turbines (3). The at least one generator (5) is located above the water surface and connected with one end of the center shaft (4). The at least three bearings are sleeved on the center shaft (4) and are located on two sides of and between the two hydro turbines (3), respectively. The tidal current energy generating device can be modularly assembled and replaced above the water surface and can extend along the water depth direction, thereby improving the power generating efficiency.

A wind turbine blade (10) for a rotor of a wind turbine (2) having a substantially horizontal rotor shaft is disclosed. The rotor comprises a hub (8), from which the blade (10) extends substantially in a radial direction when mounted to the hub (8), the blade having a longitudinal direction (r) with a tip end (16) and a root end (14) and a transverse direction. The wind turbine blade comprises a blade shell defining a profiled contour of the blade and having an inner shell wall, wherein the blade is provided with a bulkhead mounted to the inner shell wall at the root end of the blade via an attachment part, the bulkhead comprising a first side and a second side. The attachment part is integrally formed with or connected to the bulkhead, and the attachment part comprises an elastomeric material.