Blade setting at 0.6S 14.S° 20.4° 25.5° 30.3° « Effective h/d = 0.5 0.7 0.9 1.1 o kfl = 0.0019 0.0030 0.0052 0.0078 *4 20.4° corresponds to H = const. (6) Points of maxinnim efficiency. … .■'7?^l/3 [u^ n2/3 . ,, \2/3 Metal propeller Figure 13.-Nondimensional graphs of tlinist over dj'-namic pressure. In the take-off region the thnist curves can "be easily replaced straight lines. The differences in the static thrust he- J^J tween the wooden propeller and the metal propeller are…
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