at the 0.75 B. In design studies it is more convenient to work with the V/nD for maximum efficiency than with the blade angle. Figure 5 is a plot of KTt against V/nD for maximum efficiency, using the data from Tables I to VII. The points appear to fall nearer to regular curves than when p/D or 6 is… … able blade setting change is sufficient to attain 6, blade angle, degrees, at 0.75 R blade angles of 12° or less. Eiotoe 3— Static thrust coefficients for metal propellers. British tests, S. & M. No. 829 CONCLUSIONS A study of the collected data leads to the following Bureau of Aeronautics,…
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