Abstract:
The Göttinger Monograph N was written 1945-1946 summarizing the German Development and Research on Rotat-ing Wing Aircraft from 1939 to 1945. It was written in large parts by Gerhard Jakobus Sissingh, who thereafter moved to England working for the Royal Aircraft Establishment in Farnborough before immigrating to the US in 1951. In Braunschweig (location of the "Deutsche Forschungsanstalt für Luftfahrt", founded in 1935, that was re-named to "Luftfahrtforschungsanstalt Hermann Göring” in 1938) as well as in Göttingen (location of the "Aerody-namische Versuchsanstalt", founded by Ludwig Prandtl in 1907) Monographs were written after the war in volumes A to R in Göttingen and many more in Braunschweig. These Monographs documented the progresses of the German aeronautical research in all aspects (since 1939). The developments were often far ahead of those of the Allies and the Monographs were ordered to make available this knowledge to the US, British and French research establish-ments and industry. The Göttinger Monograph N is the only one about rotating wing aircraft, written in German lan-guage, and the only one not translated immediately into English. Later, some chapters had been translated. Recently, this Göttinger Monograph N was translated into English in its entirety by the author and newly published by AIAA.