Measurement of the Differential and Total Thrust and Torque of Six Full-Scale Adjustable-Pitch Propellers (1933)
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Figures 27 to 30. the tabular values against percentage radius, as in V These curves are taken for the —of maximum effi- Figures 18 to 20. The integration of the torque- ciency in order to show the results of most interest to gradient curves gives the torque coefficient CQ which if the designer.… … O .2 .4 .6 .8 1.0 1.2 1.4 V/rxD Figure 21.—Comparison of power coefficient from force measurements and yaw- meter measurements. Propeller C-6 gradient curves are continually increasing. Above this speed, the outer sections begin to fall off in thrust and increase in torque, whereas the inner…
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