Paired curves of thrust coefficient, power coefficient, and propeller efficiency plotted against advance ratio are presented for two propellers, which are identical except for shank design, for blade angles ranging from 20 to 55 deg and speeds varying from 60 to 496 mph. Propeller with most aerodynamically efficient shank design obtained a maximum envelope efficiency of 95%, while propeller with cylindrical shank efficiency varied from 2% to 12% lower.
Aerodynamic Characteristics at High Speeds of Full-Scale Propellers Having Different Shank Designs
1947
75 pages
Report
No indication
English