Belluzzo Flying Disc
Giuseppe Belluzzo, a noted Italian turbine engineer claimed before Schriever that "flying saucers" were Italian blueprints, later passed to Germans.
The original article reported that some circular aircraft had been studied and designed since 1942 in Italy and Germany. They could have been developed far enough to be able to deliver atom bombs. It was ten meter across, unmanned and made of very light metals.
During the time of the Fascist government he was elected to Parliament and was even appointed Minister of the National Economy between 1925 and 1928. He built the very first Italian steam turbines, later enhancing them for installation on cruisers and battleships.
A detailed sketch of his disc has been published.
There are claims that British commandos trained for a mission in a remote site in North-East Norway, where Germans were developing the original Italian idea.The development of the "Feuerball" and "Kugelblitz" circular aircraft is linked.
Belluzzo's circular turbo-powered aircraft
The "pipes" installed on the edge of the disc had a variable diameter. The air accelerated when flowing through them. In the largest section of each pipe some oil was sprayed and then ignited. The temperature rose quickly and at the end of the pipe the air reached a speed around 700 meters/sec., able to supply a 400 meters/sec. rotation speed to the whole circular aircraft.
When the oil gone, the craft fell quickly down to the ground with its explosive payload.
Anther version reported the unmanned craft as a "flak weapon"