Fafnir his foster-son Sigurd to kill the dragon. Regin instructed Sigurd to dig a pit in which he could lie in wait under the trail Fáfnir used to get to a stream and there plunge his sword, Gram, into Fafnir's heart as he crawls over the pit to the water. Regin then ran away in fear, leaving Sigurd to the task. As Sigurd dug, Odin appeared in the form of an old man with a long beard, advising the warrior to dig more trenches for the blood of Fafnir to run into, presumably so that Sigurd does not drown in the
RRG Fafnir 2 its technical section, led by Lippisch, moved from the Wasserkuppe to Darmstadt to become the DFS, so the new glider was sometimes known as the DFS Fafnir 2. It was Lippisch's last conventional glider design. The most immediately obvious difference between the two designs was that the Fafnir 2 was a mid-wing aircraft. The original Fafnir had a high wing and initially suffered serious aerodynamic drag losses at the wing-fuselage junctions. Wind tunnel studies at the University of Göttingen showed that these losses were lower with mid-wing designs. They also suggested that the wing and fuselage be integrated and the