Göttinger Monograph N: German Research and Development on Rotary-Wing Aircraft (1939–1945)
- 3h 44m
- Berend G. van der Wall (ed)
After World War II the British Ministry of Supply ordered the German aeronautical research establishments in Gottingen and Braunschweig to summarize research results obtained from 1939 to 1945. This volume deals with all German helicopter and autogyro development during this period, including the contributions of Focke, Flettner, von Doblhoff, and others who brought rotorcraft into series production maturity.