The general efficiency curve for air propellers (1924)
NASA Technical Reports Server (NTRS) · leaf 6
THE GEK-ERAL EFFICIENCY CURVE FOR AIR PROPELLERS. 5 grouped that a curve drawn through the maximum observed efficiency at each (^^^ be quite similar to the theoretical curve. A curve so drawn, as on Figure 2, may be considered as the practical limit to maximum eflSciency for propellers of… … |^j,a/* maximum efficiency Fio. 2. Propeller efficiency. VariatioD of nuximum efficiency with () • From Duraod's experiments. THE GENERAL EFFICIENCY CURVE. ' Denote by the subscript o the conditions corresponding to maximum efficiency, so that '7e=(^^;:^)^Xcot {<Po + fo) (la) Then the ratio of the…
NASA Technical Reports Server (NTRS)
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