If you happened to know Japanese it’s much easier to read the original article on wiredjp than .com https://wired.jp/article/distributed-micro-roughness-aerody

If you happened to know Japanese it’s much easier to read the original article on wiredjp than .com https://wired.jp/article/distributed-micro-roughness-aerodynamic-drag-reduction/ https://wired.jp/article/distributed-micro-roughness-aerodyn...