At first glance, a flyable airplane made of cardboard sounds almost like a joke – the sort of thing that collapses long before it ever leaves the ground. But YouTuber and serial tinkerer Peter Sripol ...

Aviation consists of two major groups. Airplane enthusiasts, and helicopter enthusiasts. The two groups rarely get along, each extolling the virtues of their chosen craft. Somewhere in between are ...

YouTube Peter Sripol built a subscale, working model of the Ekranoplan KM, or Caspian Sea Monster. The Ekranoplan was a ground effect vehicle designed to ride a cushion of air over a flat surface such ...