About 1931 the glider manufacturer Alexander Schleicher went to Hans Jacobs, then at the RRG (Rhön-Rossitten Gesellschaft) on the Wasserkuppe, for glider design that, like the RRG Fafnir designed by Alexander Lippisch, was capable making long cross country by travelling quickly between thermals but could be put into series production making it cheaper to build.
RRG Falke | Fafnir | RRG Fafnir |