Lifter or Ionolet...

Lifter or ionolet - easy flying model that uses the effect Biefeld - Brown to create lift. Typically design consists of a light frame of balsa or foam, a thin metal wire, ionizing molecules of air, and a wide second electrode, which is an equipotential surface, such as a thin metal foil. Different variants of structures, the most widely used options in the form of an equilateral triangle or a hexagon of six such triangles.