Climb and High-Speed Tests of a Curtiss No. 714-1C2-12 Four-Blade Propeller on the Republic P-47C Airplane

Climb and High-Speed Tests of a Curtiss No. 714-1C2-12 Four-Blade Propeller on the Republic P-47C Airplane

Climb and high-speed tests of a Curtiss four-blade propeller and P-47C airplane, showed loss in efficiency of 5 to 8% when power was increased from normal to military. This loss was attributed to reductions in section lift-drag ratios resulting from increased operating lift coefficients. In high-spe...

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Bibliographische Detailangaben
1. Verfasser: Vogeley, A W
Format: Report
Sprache:eng
Schlagworte:
AERIAL PROPELLERS
AIRCRAFT
ATI COLLECTION
ATI-7679
COEFFICIENTS
EFFICIENCY
FLIGHT
HIGH VELOCITY
LIFT
LIFT TO DRAG RATIO
MACH NUMBER
RATIOS
ROTATION
TEST AND EVALUATION
VELOCITY
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Zusammenfassung:Climb and high-speed tests of a Curtiss four-blade propeller and P-47C airplane, showed loss in efficiency of 5 to 8% when power was increased from normal to military. This loss was attributed to reductions in section lift-drag ratios resulting from increased operating lift coefficients. In high-speed flight at military power, losses in efficiency because of compressibility started at airplane Mach number less than 0.4 and increased to about 11% at airplane Mach number of 0.7. Tests indicated that propeller efficiency may be improved in climb and high speed by increasing solidity and reducing rotational speed.