Some stories on these UFO´s:
AS6, The Story of a Nazi "UFO"
The public presentation of Sack's flying saucer took place during the celebration of the First National Contest for Air Models With Combustion Motors,held on the 27 and 28 of June, 1939 in Leipzig-Mockau (Germany).
Arthur Sack's model measured 1,250 mm and weighed 4,500 grams, powered by a built-in Kratmo-30 motor, 0.65 V and 4,500 RPM with a propeller measuring 600mm in diameter.
Those participating in the event, which was wisely held behind closed doors, had to cover a round-trip flight utilizing the simplest guidance mechanism available. Nonetheless, this early attempt at using small models for tactical reconnaissance purposes proved to be a resounding failure. Most of the models, fitted with the so-called "self-guidance device" and their respective motors, displayed their worst qualities.
The only truly remotely guided model, built by Sinn, broke down at the starting line, while another, equipped with a steam turbine built by Soll, caught fire. It was a veritable disaster.
Sack didn't escape the rash of bad luck. His "flying saucer" was unable to lift off the ground, and finally, Sack had to throw it into the air himself. After this "assisted takeoff", the model managed to perform 100 meters of stable flight, just barely reaching the finish line. Sack fine-tuned his designed following this experience in order to achieve longer, quicker flights. In spite of it all, Arthur Sack was extremely fortunate, since among the spectators to the event was General-Air Minister Udet, who was deeply impressed by the concept.
Udet became a strong supporter of the military use of "flying saucers," assigning them the role hitherto developed for barrage balloons. He promised Sack that he would "smooth the road for further research."
No sooner said than done: Arthur Sack built some additional "flying saucer" models prior to beginning the construction of a manned aircraft in the midst of the war years at the MIMO plant (Mitteldeutsche Motorwerke) in Leipzig. The final design, which received the nomenclature of AS6, was completed at the Brandis flight shop (Flugplatz-Werkstatt) in early 1944.
The very first AS6 prototype was equipped with an Argus 10cc, 140 HP engine, and a 6.40 meters thick circular wing with a Gottinger profile. For a flight weight estimated at some 750 - 800 kgs., the wing load must have been some 25 to 30 kilos per square meter. Therefore, it almost fit within the measurement parameters of a Klemm 25D.
Finally, with the prototype already in the hangar, all that was needed was to find a pilot--which Sack was not--and begin testing.
Baltabol, the very same flight leader of the ATG (formerly known as DFW) began to work on the AS6 in April, 1944. He remarked upon seeing the saucer: "The aircraft makes a very positive impression, and its external aspect is very good. However, it cannot be categorically described as a clean piece of work, taking into consideration the resources available at Brandis for its utilization."
Baltabol's statement turned out to be prophetic, as the first experiments with the "flying saucer" were burdened with complications. During the prototype's initial roll-out, both the shape and an unfortunate pedal adjustment caused the rudder and the brake to fail. A crack in the spur put a premature end to this early attempt.
In the April 1979 issue, Lufthart International, the German aeronautical magazine, detailed the first test flights by the Nazi flying saucer.
"The spur was strengthened later on by a steel rail in the fashion of a faired beam, and as soon as the pedal was relocated to a more convenient position, the test flight took place. Baltabol attempted five takeoffs from the 1.2 Km runway at Brandis, but the rudder was extremely hard. The right strut on the landing gear cracked during the final effort."
Upon examination of this problem, the pilot's advice regarding the tranference of the landing gear some 20 cm. to the rear was implemented, a move that required reinforcement of the aircraft's rear. But in the end, the measure would be redoubled, since the builders believed that the landing gear should be moved back by 40 cm., which would cause the prototype's nose to tip forward, and Baltabol refused to accept the responsibility for a takeoff under such conditions, particularly considering the subsequent changes effected to the rudder and the braking pedals.
In spite of these and other modifications, the AS6 did not take off on its following test: after rolling down the runway some 600 meters, the aircraft's nose showed no inclination whatsoever to lift off the ground.
New modifications were made and a new attempt was executed. This time, the saucer would roll to the runway's maximum length of 700 meters in total calm (there was no wind). When Baltabol accelerated, the AS6 picked up speed and after 500 meters down the runway, its landing gear lifted off the ground. The Nazi saucer had made its first leap into space.
However, the illusion was as brief as the leap itself. The aircraft touched down once more, and after several pilot-controlled bounces, Baltabol decided to forgo the takeoff attempt upon seeing the end of the runway grow dangerously near. For the following test, Baltabol took advantage of lift forces, causing the machine to roll at a greater angle, thus obtaining a longer--but not higher--skyward jump. A sequel to the test, conducted the same day, did not meet greater success, since the propeller gave the vehicle a strong inclination which interfered with its movement.
According to Lufthart, Baltabol suggested that a new series of wind-tunnel experiments be performed in order to calibrate the vehicle's exact flight and takeoff characteristics. Later on, it would be another pilot, Franz Rosle, who would test Sack's flying saucer in the summer of 1944, although he too would experience certain difficulties, such as a new crack in the landing gear.
The harried final month of the war surprised the Brandis field, interrupting testing on the AS6. From that moment onward, the prototype's story is lost amid the confusion of the armed conflict. Nonetheless, Lufthart points out that in the fall of that very same year, a flying saucer was sighted over the Neubiderg aerodrome, near Munich. There exists the possibility that this UFO was proof that the AS6 had finally overcome all its technical setbacks.
In any case, the AS6's complex history, from a model imagined by a German farmer to its manufacture as a Nazi military prototype, constitutes a fine example of the existence of "flying saucers" half a century ago, which bore no relation whatsoever with alien spacecraft...and it wasn't the only one
And more here:
http://www.inexplicata.com/issue1/ae...l_history.html
HellFish love teh 
