Page 250 - Practical Ship Design
P. 250

ROTATION
                               P
                         -  i  i






                                    BIADE FIXED
                                    TO HUB

                           1. FIXED PITCH             2. CONTROLLABLE PITCH               3. HIGHLY SKEWED
















                         4. SELF PITCHING             5. TIP VORTEX FREE (TVF)         6. BALANCE THRUST (BTL)



                                           Fig. 7.1 1 (1-6).  Various types of propulsors (continued opposite)
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