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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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Trailing Edge

The edge of the propeller adjacent to the aft end of the hub. When viewing the propeller from astern, this edge is closest. The trailing edge retreats from the flow when providing forward thrust.

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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