Abstract: The invention relates to an irrigation and drainage device and/or water storage device, preferably for managing water, in particular irrigation of (green) areas and/or plants, comprising the following: at least one water-collection device (10, 20, 30, 40, 64) designed to collect and/or store water, wherein the water-collection device (10, 20, 30, 40, 64) is in direct or indirect fluid connection with a buffer (tank) (60) and/or a storage reservoir (80), wherein the buffer (tank) (60) and/or the storage reservoir (80) is/are designed to store water and to make the stored water available for use, for example to release it into an irrigation pipe network (85); at least one control unit (61, 130), which is designed to receive and/or acquire environmental data, in particular to acquire these data by means of at least one sensor (100), and based on the environmental data, using at least one actuator, for example a control valve (84), to make available for use a water volume flow from the buffer (tank) (60) and/o

Abstract: Method for retrofitting a lightning protection device of a rotor blade of a wind turbine. In the method, a cable section of a lightning protection cable is stripped of insulation. A connection piece and a lightning protection receptor are fitted to the cable section which is stripped of insulation, so that the lightning protection receptor is electrically coupled to the lightning protection cable. The invention also relates to a rotor blade which is retrofitted using the method. The risk of lightning strikes in specific regions of a rotor blade can be reduced by the invention by means of the retrofitting operation.

Abstract: A method for manufacturing a rotor blade of a wind power plant which has an area close to the blade root in which the rotor blade has an obtuse rear edge. The method includes manufacturing a half-shell on the pressure side and a half-shell on the suction side, introducing and adhesively bonding filler bodies into at least one section of the area of the obtuse rear edge of the pressure-side half-shell and the suction-side half-shell, wherein the sections with the filler bodies lie opposite one another in the assembled rotor blade, assembling and positioning the half-shells relative to one another, wherein an adhesive gap which is delimited by the first adhesive surfaces of the filler bodies remains between the filler bodies, and introducing an adhesive medium into the adhesive gap. Also a rotor blade manufactured according to the method, and a wind power plant including such a rotor blade.

Abstract: Method for retrofitting a lightning protection device of a rotor blade of a wind turbine. In the method, a cable section of a lightning protection cable is stripped of insulation. A connection piece and a lightning protection receptor are fitted to the cable section which is stripped of insulation, so that the lightning protection receptor is electrically coupled to the lightning protection cable. The invention also relates to a rotor blade which is retrofitted using the method. The risk of lightning strikes in specific regions of a rotor blade can be reduced by the invention by means of the retrofitting operation.

Abstract: A method for manufacturing a rotor blade of a wind power plant which has an area close to the blade root in which the rotor blade has an obtuse rear edge. The method includes manufacturing a half-shell on the pressure side and a half-shell on the suction side, introducing and adhesively bonding filler bodies into at least one section of the area of the obtuse rear edge of the pressure-side half-shell and the suction-side half-shell, wherein the sections with the filler bodies lie opposite one another in the assembled rotor blade, assembling and positioning the half-shells relative to one another, wherein an adhesive gap which is delimited by the first adhesive surfaces of the filler bodies remains between the filler bodies, and introducing an adhesive medium into the adhesive gap. Also a rotor blade manufactured according to the method, and a wind power plant including such a rotor blade.

Abstract: The invention relates to a method for repairing a vortex generator (6) which projects from an outer skin (4) of a rotor blade, the vortex generator tip (65) of which is broken off and leaves behind a vortex generator stub (66) on the rotor blade outer skin (4), by the vortex generator stub (66) being ground down and a vortex generator crown (50) being fitted onto the ground-down vortex generator stub (66a).

Abstract: A composite fibre component for a rotor blade of a wind power plant having a first surface, shaped in a predefined fashion, on a first side of the composite fibre component. The composite fibre component is developed such that the composite fibre component has a second surface, shaped in a predefined fashion, for connecting to a further component for the rotor blade on at least one partial area of a second side, facing away from the first side, of the composite fibre component. A manufacturing device for manufacturing a composite fibre component for a rotor blade of a wind power plant by using a vacuum infusion method, and to a method for manufacturing a composite fibre component for a rotor blade of a wind power plant by using a vacuum infusion method.

Abstract: A method, a device (20), an arrangement and a use for applying a reference mark on a rotor blade (1) for a wind power plant. After producing the rotor blade (1) in a manufacturing mold (34, 34?, 35) and before removing the rotor blade (1) from the manufacturing mold (34, 34?, 35), a reference mark is applied in the area of a rotor blade root (5) of the rotor blade (1) by means of a marking device (23), which is connected or can be connected to a holding device (21) disposed at a predetermined or predeterminable position on the manufacturing mold (34, 34?, 35).

Abstract: A shear web (10, 10?) with two shear web feet (11, 11?, 12, 12?) for the connection of a pressure side (35) with a suction side (36) of a wing (37), wherein the shear web (10, 10?) has a longitudinal extension (38), which is transverse to the extension of the shear web from the suction side (36) to the pressure side (35). Also, a corresponding wing (37) and a method for the production of a wing (37). The shear web wherein at least one shear web foot (11, 11?, 12, 12?) has two connection sides (13-16?) arranged on opposite sides of the shear web (10, 10?) transverse to the longitudinal extension (38). The wing (37) has a shear web (10, 10?) and a supporting body (18-18?), which is connected with a shear web foot.

Abstract: A method, a device (20), an arrangement and a use for applying a reference mark on a rotor blade (1) for a wind power plant. After producing the rotor blade (1) in a manufacturing mold (34, 34?, 35) and before removing the rotor blade (1) from the manufacturing mold (34, 34?, 35), a reference mark is applied in the area of a rotor blade root (5) of the rotor blade (1) by means of a marking device (23), which is connected or can be connected to a holding device (21) disposed at a predetermined or predeterminable position on the manufacturing mold (34, 34?, 35).