What was the birth date of the designer of the RRG Fafnir 2?
Alexander Lippisch: Alexander Martin Lippisch (November 2, 1894 – February 11, 1976) was a German aeronautical engineer, a pioneer of aerodynamics who made important contributions to the understanding of flying wings, delta wings and the ground effect, and also worked in the U.S. His most famous designs are the Messerschmitt Me 163 rocket-powered interceptor and the strange-looking Aerodyne.
i don't know