The diameter of a propeller refers to the length of a straight line passing through the center of the propeller from one edge of the rotating blades to the opposite edge. In simpler terms, it’s the distance across the widest part of the propeller, essentially representing the size of the propeller.
Where:
- is the diameter of the propeller,
- is the power required or available (in watts or horsepower), and
- is the rotational speed of the propeller (in revolutions per minute, RPM).