Wings is the second studio album by South Korean boy group BTS. The album was released on October 10, 2016 and contains 15 tracks, with "Blood Sweat & Tears" as its first single, and seven solo songs recorded by the members. It charted on the Billboard 200 at number 26, making it the highest charting and best selling K-pop album on the chart; and the first to spend more than one week on the chart. The album's lead single, "Blood Sweat & Tears", became the group's first domestic number one hit on Gaon Digital Chart. ..
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BTS - Wings Album Wiki
A wing is a type of fin that produces lift, while moving through air or some other fluid. As such, wings have streamlined cross-sections that are subject to aerodynamic forces and act as airfoils. A wing's aerodynamic efficiency is expressed as its lift-to-drag ratio. The lift a wing generates at a given speed and angle of attack can be one to two orders of magnitude greater than the total drag on the wing. A high lift-to-drag ratio requires a significantly smaller thrust to propel the wings through the air at sufficient lift.
Lifting structures used in water, include various foils, including hydrofoils. Hydrodynamics is the governing science, rather than aerodynamics. Applications of underwater foils occur in hydroplanes, sailboats and submarines..