- #1
copria
- 16
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Is there a noticable diffence in torque required to spin a marine propeller at a constant rpm (say 2000rpm) when under a different water column? (5m vs 35m)
Marine propeller resistance is the force that a ship's propeller must overcome in order to move the ship through water. This resistance is caused by frictional forces and pressure differences on the propeller blades.
Marine propeller resistance can be calculated using various mathematical models and equations, such as the Kaper method or the Holtrop method. These models take into account factors such as ship speed, propeller diameter, and water density to determine the amount of resistance.
There are several factors that can affect marine propeller resistance, including ship speed, propeller design, water density, and hull shape. Additionally, marine growth on the hull or propeller can also increase resistance.
Marine propeller resistance is a major factor in determining a ship's overall performance, as it affects the amount of power needed to move the ship through the water. Higher resistance can result in decreased speed and increased fuel consumption.
There are several ways to reduce marine propeller resistance, such as using more efficient propeller designs, keeping the hull and propeller clean of marine growth, and optimizing ship speed for the specific conditions. Regular maintenance and proper hull design can also help to minimize resistance and improve ship performance.