This is purely for my own interest. Can anybody tell me the reason, or function, of the root 'cuffs' on the Hamilton Standard prop on Mustangs, and, for example, the Curtiss Electric props on Marauders?
I vaguely recall they were something to do with coping with 'dead' or 'dirty' air close to the fuselage/nacelle. A former R.A.F. Mustang pilot told me that the 'Aeroproduct' prop on the P51K (cuffless), was a little problematical compared to the H.S. prop on the 'D', and didn't give as much 'oomph'(!).