Abstract: An apparatus for extracting power includes a track and an airfoil coupled to the track. The track includes first and second elongate sections, where the first elongate section is positioned above the second elongate section. The airfoil is moveable in opposite directions when alternately coupled to the first elongate section and second elongate section.
Abstract: An apparatus for extracting power includes a track and an airfoil coupled to the track. The track includes first and second elongate sections, where the first elongate section is positioned above the second elongate section. The airfoil is moveable in opposite directions when alternately coupled to the first elongate section and second elongate section.
Abstract: In some embodiments, an apparatus includes at least two towers arranged in each of a first direction and a second direction, each tower having a first end above a second end in a third direction. In some embodiments, the apparatus includes a bridling system connecting each of the towers to other towers, the bridling system connected to eachtower above the second end of the respective tower and balancing forces on each tower in the first and second directions.