A fluid dynamic body having a trailing edge with a pattern formed thereon, the pattern can include a plurality of smoothly surfaced adjacent members with respective interstices therebetween, wherein at least one of the interstices completely contains a porous barrier. In some embodiments, the porous barrier can obstruct fluid flow through the respective interstice between a first surface of the fluid dynamic body on a first side of the trailing edge and a second surface of the fluid dynamic body on a second side of the trailing edge. This helps to reduce noise produced at the trailing edge. In some embodiments, the fluid dynamic body is a wind turbine blade or an air-engine blade.

A method for manufacturing an outer skin of a rotor blade includes forming an outer skin layer of the outer skin from a first combination of at least one of one or more resins or fiber materials. The method also includes forming an inner skin layer of the outer skin from a second combination of at least one of one or more resins or fiber materials. More specifically, the first and second combinations are different. Further, the method includes arranging the outer and inner skin layers together in a stacked configuration. In addition, the method includes joining the outer and inner skin layers together to form the outer skin.

A wind power plant comprising a first structural element, a second structural element, a bearing assembly by means of which the first structural element is rotatably mounted on the second structural element, a first flange connection between the first structural element and the bearing assembly, a second flange connection between the second structural element and the bearing assembly, and at least one drive, held by a support structure for rotating the first structural element relative to the second structural element. The support structure is formed as a plate and is arranged at one of the flange connections.

A wind power plant comprising a first structural element, a second structural element, a bearing assembly by means of which the first structural element is rotatably mounted on the second structural element, a first flange connection between the first structural element and the bearing assembly, a second flange connection between the second structural element and the bearing assembly, and at least one drive, held by a support structure for rotating the first structural element relative to the second structural element. The support structure is formed as a plate and is arranged at one of the flange connections.

A manufacturing method for producing a tower segment, a tower portion and a tower section for a tower, in particular for a tower of a wind power installation. A tower segment, a tower portion and a tower section for a tower, in particular for a tower of a wind power installation, to a tower, and to a wind power installation. The manufacturing method comprises: providing a plate that extends in the longitudinal direction and, orthogonally thereto, in a circumferential direction, wherein the extent in the longitudinal direction is larger than the extent in the circumferential direction; and rolling the plate for incorporating a thickness profile along a longitudinal direction of the plate, wherein the rolling comprises: incorporating a first constant portion having a substantially constant first thickness which differs from a substantially constant second thickness of a second constant portion that in the longitudinal direction is disposed so as to be substantially parallel to said first constant portion; and bending the plate in the circumferential direction.

A wave receiving plate is pivotably supported by a support device in the wave force generation system and includes a flexible plate in at least a part of the wave receiving plate.

A wave receiving plate is pivotably supported by a support device in the wave force generation system and includes a flexible plate in at least a part of the wave receiving plate.

A fluid dynamic body having a trailing edge with a pattern formed thereon, the pattern can include a plurality of smoothly surfaced adjacent members with respective interstices therebetween, wherein at least one of the interstices completely contains a porous barrier. In some embodiments, the porous barrier can obstruct fluid flow through the respective interstice between a first surface of the fluid dynamic body on a first side of the trailing edge and a second surface of the fluid dynamic body on a second side of the trailing edge. This helps to reduce noise produced at the trailing edge. In some embodiments, the fluid dynamic body is a wind turbine blade or an air-engine blade.

A wind turbine blade includes: a blade body extending from a blade root along a blade longitudinal direction toward a blade tip; and a metal strip provided to cover at least a leading edge at the blade tip side of the blade body so as to suppress erosion at the leading edge of the blade body.

A wind turbine rotor blade with a rotor blade tip, a rotor blade root, and a rotor blade connection in the region of the rotor blade root with a rotationally symmetrical flange coupling is provided which has a first and a second end. The first end of the flange coupling has multiple bores for receiving fastening means for fastening to a hub of a wind turbine. The second end is fastened in or on material of the rotor blade root. The second end extends in the direction of an axis of rotation of the flange coupling.