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Propeller Terminology

The Michigan Wheel guide to understanding propellers. Here you will find everything from propeller parts to terminology that will help you understand how boat propellers work.

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Hub

Solid cylinder located at the center of the propeller. Bored to accommodate the shaft. Hub shapes include cylindrical, conical, & barreled.

Propeller Terms

Blade Blade Tip Cavitation Constant Pitch Propeller Controllable Pitch Propeller Cup Cylindrical Section Diameter Fixed Pitch Propeller Geometric Pitch Angle Hub Leading Edge Non Thru-Hub Exhaust Over-Hub Exhaust Over/Thru-Hub Exhaust Pitch Pitch Reference Line Radius Rake Rotation Skew Slip Thru Hub Exhaust Track Trailing Edge Variable Pitch Propeller Ventilation

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