Custer’s Revenge: eVTOL Drone Brings Back Channel Wings

You have to be a pretty big aviation nerd to know about [Willard Ray Custer] and his channel wing concept, but if you are, you’ll be giddy to hear about the semicircular profile of the HopFlyt Cyclone drone’s tandem wings. If you’re not quite that much of a nerd, please keep reading, because it’s a really neat concept that never — er — quite got off the ground. [Custer]’s idea was pretty simple, and born of a shift in reference frame — he realized that only the relative wind over the wing matter