Presented herein are articles and methods relating to manufactured superhydrophobic, superoleophobic, and/or supermetallophobic surfaces with macro-scale features (macro features) configured to induce controlled asymmetry in a liquid film produced by impinging phase (e.g., impinging droplet(s)) onto the surface, thereby further reducing the contact time between an impinging liquid and the surface.

The present disclosure relates to a connecting element and to a process for producing said connecting element. The present disclosure further relates to a connecting system and a device comprising said connecting element, and to a process for fixing said connecting element to a first component. The present disclosure further relates to the use of said connecting element and connecting system for friction-increasing connection of a first and a second component in energy generation, specifically in wind turbines and hydropower turbines, and in machine, plant, motor vehicle and aircraft construction.

Polymeric compositions useful in preventing the frost or ice deposition in the surface of wind turbine generator blades present in a cold climates or high altitude are provided. In addition to the anti-icing capacity, the polymeric composition prevents the deposition of dirt, i.e. it has self-cleaning properties.

There is provided a wind turbine rotor blade having a rotor blade root and a rotor blade tip. The rotor blade has a lightning protection system with a lightning protection conductor which has a galvanic connection to the rotor blade root region. The lightning protection system has a region of the rotor blade surface, to which a heatable paint or a heatable coating is applied, wherein that region is galvanically coupled to the lightning protection conductor so that a lightning strike in the heatable paint can be suitably dissipated.

The present invention is an automated wind turbine servicing system that includes a rover, and uses an active electro-mechanical gripping roller system to attach to the horizontally positioned airfoil and navigate along it in order to clean, inspect, service (paint, remove material or repair), or otherwise maintain the wind turbine airfoil. An electromechanical compression system adapts to various turbine airfoil profiles so that it can be used to service many different types of wind turbines. The rover operates on a horizontal airfoil rather than a vertical airfoil to utilize gravity and prevent movement along the chord of the airfoil. Once secured to the airfoil, the rover activates a drive system that propels the rover along the airfoil as it travels along the upper edge, using wind pressure, the rover wheels' frictional adherence to the airfoil, and gravity to assist in coupling the rover to the airfoil. The rover, which preferably includes a robotic arm, is able to utilize multiple tools to perform various tasks such as inspecting, cleaning, sanding, repairing, painting and laying leading edge protection tape as well as vortex generators on the surface of the airfoil.

An article for service at high temperatures comprises a substrate comprising a first region and a second region; and a coating disposed over the substrate. The coating comprises a first portion disposed over the first region of the substrate and a second portion disposed over the second region of the substrate. The coating includes a layer comprising a ceramic material and further including a quantity of surface-connected voids, and a protective agent is disposed within at least some of the surface-connected voids of the layer. Within the first portion, the agent is present within the layer at a concentration of less than or equal to 4 percent by volume of the layer exclusive of the voids, while, within the second portion, the agent is present within the layer at a concentration up to the carrying capacity of the layer. Methods for forming the article are also presented.

A thermal barrier coating includes a highly porous layer and a dense layer. The highly porous layer is formed on a heat-resistant base, is made of ceramic, has pores, has a layer thickness of equal to or larger than 0.3 mm and equal to or smaller than 1.0 mm, and has a pore ratio of equal to or higher than 1 vol % and equal to or lower than 30 vol %. The dense layer is formed on the highly porous layer, is made of ceramic, has a pore ratio of equal to or lower than 0.9 vol % that is equal to or lower than the pore ratio of the highly porous layer, and has a layer thickness of equal to or smaller than 0.05 mm.

A Vortex-shedding-arrangement, which is prepared to be arranged on a tower of a wind turbine, is provided. Embodiments of the invention even relate to a tower, which is equipped with the Vortex-shedding-arrangement and to a method to equip the tower with the Vortex-shedding-arrangement. The Vortex-shedding-arrangement according to embodiments of the invention is arranged and prepared to be connected to a surface of a tower. The Vortex-shedding-arrangement is prepared to reduce Vortex-induced-vibrations, acting on the tower and its structure, during the tower-transportation. The vortex shedding arrangement comprises vortex shedding elements and at least one shrink foil. The at least one shrink foil is prepared to fix and to position the vortex shedding elements at specific positions at the tower surface by heat applied to the shrink foil.

A reciprocating pump includes a frame for a power end, a skid support structure integrally formed at a base of the power end frame to provide proper support and rigidity for the pump power end, where the integral skid support structure has a plurality of struts forming a series of chambers.

A Method of Manufacture for a Vertical Axis Wind Turbine Airfoil by injecting high-density foam into a light-weight air-foil framed-structure assembled by predefined snap-together glue-less components. For alignment, and proper inner frame component positioning the assembly of the framed-structure components is assisted by a table holding in place the frame's forward and aft spar. The internal cross member rib locking-supports have circular-dove-tail-locking snap-together ends. A plurality of the internal light-weight wooden component members is laminated with 0.020 to 0.040 aluminum. The assembled frame structure is placed between non-stick sheets within a custom mold which is then clamped down upon the framed structure and injected with high-density foam. The high-density injected frame structure is then carbon fiber resin infused in a vacuum bagged processed.