There is an article on Wired News about Russian flying saucer technology being used by the US Navy. Visiting the Russian company’s official website, EKIP Aviation Concern, is quite interesting.
Apparently one of the biggest benefits of flying saucer tech is the more spherical body shape is much more efficient that the long cylinders used in current airplanes. By it’s nature, a sphere shape of the same weight as a cylinder can hold more stuff, and be stronger than a cylinder. Thus it apparently is with UFOs as well.