Professor Wilhelm Fuchs reportedly calculated the Natter's aerodynamics at the "Technische Hochschule", Aachen using a large analog computer. Wind tunnel testing on a wooden model, scaled to 40% of full size, was performed at the "Deutsche Versuchsanstalt für Luftfahrt" (DVL), the Institute for Aerodynamics at Berlin-Adlershof in September 1944 at speeds up to 504 km/h. Results from these tests were reported in January 1945 to the Bachem-Werk. Further model tests were carried out at the "Luftfahrtforschungsanstalt Hermann Göring" (LFA) facility in Völkenrode-Braunschweig, at speeds close to Mach 1. In March the Bachem-Werk simply received a statement that satisfactory flying qualities should be expected with speeds up to 1,100 km/h.