The infamous Haunebu Nazi UFO from ww2.
This model uses TurboSmooth and normal smoothing groups.
In 1942, the enlarged Haunebu II of 26 meters diameter was ready for flight testing. This disc had a crew of nine and could also achieve supersonic flight of 6,000 to 21,000 km/h with a flight endurance of 55 hours. Both it and the further developed 32 meter diameter Haunebu II Do-Stra had heat shielding of two hulls of Victalen. The craft were constructed and tested between 1943-44. The craft made 106 test flights.