Horten Ho 229 is the first ever “flying wing” jet. The machine was built at the very end of World War II in the German Gotha factory. Today, the best-known structure of this type is the American strategic bomber Northrop B-2 Spirit, but the two planes are separated by a difference of 44 years of technological development. It was a very unusual structure, not only due to the shape of the airframe, but also the materials it was made of – it was largely plywood and wood, not only duralumin and steel. The plane was powered by two Junkers Jumo 004B jet engines. The Horten Ho 229 was flown in January 1945. It was armed with two powerful 30mm MK 108 cannons, and the performance exceeded all Allied planes at that time. Nevertheless, the Ho 229 was planned to be used as a bomber.