Rohrbach Roterra
Rohrbach designed the "Roterra", a three engined bomber from 1930, wingspan 30m, lenght 20m, wing area 110m2, speed 250kms, fielding Bristol  Aquilas, 450 hp. Range would be 1000kms. Rohrbach failed to atract the Reichswehr and sold the licence to Avia, where it was developed into the Avia 46.