Originally Posted by Varese2002
Perhaps Yavor can have a go at this propeller.
You overestimate my knowledge, Kees!
For me, the propeller is wrong. My knowledge of turbine blades, compressors and fan impellers say there is wrong chord selection and, possibly, angle of attack distribution along the blade. I do not know what the reason was! The proper theoretical background was developed during the war and entered university curriculum just after the war. During early 1920s propeller design was becoming science, not art. Obviously, not elsewhere ...