MotoGPさんのインスタグラム写真 - (MotoGPInstagram)「#MotoGPInParts - Rear Wheel Aero. Wheel covers are something we've looked at before but not on the rear wheel. Ducati continued their innovations last year when they rolled out this rear wheel aero cover not long after unveiling the one for the front wheel. The idea behind the rear wheel aero is much the same as for the front. When a wheel rotates it creates turbulent air, making it the least aerodynamic part of the motorcycle. Covering it reduces some of the turbulence, stopping air from spilling out the sides of the wheel and allowing air from the front of the bike to pass down the side of the bike much easier and with less interruption. The result of this is that the bike becomes more aerodynamic. The air can follow a smoother path rather than encountering turbulent air and disrupting the flow. One thing that was said at the start of 2019 when wheel covers were first seen was that as they allow air to pass by the wheel much closer, and in a more uniformed style, they might cause some degree of cooling to the tyre. The theory goes that as the air passes by the tyre it could help with taking heat away from the surface of the tyre, but it's unknown whether it actually does this or not In summary, rear wheel covers are, first and foremost, for reducing turbulence and achieving higher aerodynamic efficiency. If you like these types of posts, make sure you check out our 'MotoGP Tech' Facebook group!」6月30日 16時01分