Since 1935 the Thule Society had been scouting for a remote, inconspicuous, underdeveloped testing ground their craft. Thule found a location in Northwest Germany that was known as or possibly designated as Hauneburg. At the establishment of this testing ground and facilities, the SS E-IV unit simply referred to them as the “H-Gerat” (Hauneburg Device). For wartime security reasons the name was shortened to Haunebu. In 1939 it was briefly designated as RFZ-5 along with Vril‘s machines, once the Hauneburg site was abandoned in favour of the more suitable Vril Arado Brandenburg aircraft aircraft testing grounds.
haunebu
First allegedly flown in 1939. The craft of which two prototypes were constructed were 25 meters in diameter, had a crew of eight and could achieve the incredible initial velocity of 4,800 km/h, but at low altitude. Further enhancement enabled the machine to reach 17,000 km/h.
haunebu I