High Quality Content by WIKIPEDIA articles! The development of military disc-shaped aircraft apparently dates back to World War II. Since most of the information is highly classified, many details are uncertain. A number of disc-shaped aircraft have been proposed over the years, a few being built. The best documented of these was Arthur Sack's experimental Sack AS-6, a small light plane built just before the start of World War II. In 1934, at Miami University, an aircraft called the Nemeth Umberallaplane was tested. This aircraft had a circular wing on top of the rectangle fuselage, a propellor in front, wheels underneath the fuselage and a rudder with tailfins. There were no wings extending from the middle of the fuselage.