Knowledge — propeller

Propellers for boats are usually of two types, left-hand and right-hand, known as CW and CCW respectively. CW is an abbreviation for Clockwise, indicating a clockwise rotating propeller, also known as a right-hand propeller. When a ship's propeller is rotating, the leading edge of the propeller blade is to the right and the trailing edge is to the left when viewed from the side, propelling the water in the same direction as the rotation. The right-hand propeller is usually mounted on the left side of the ship, i.e. the port side of the ship. CCW stands for Counterclockwise and indicates...

Ⅰ. The design of underwater thruster propeller has the following aspects to consider

1、Thrust demand: it is necessary to determine the propeller diameter, torsion, number of blades and other parameters by calculating the thrust required by the thruster.

2, hydrodynamic performance: need to consider the propeller blade shape, cross-sectional shape, pitch and other parameters to achieve the best hydrodynamic performance.

3, noise and vibration: the need to optimize the structure of the propeller to reduce noise and vibration, improve the reliability and service life of the propeller.

4、Materials and manufacturing: Suitable materials and manufacturing processes need to be selected to ensure the strength, stiffness and corrosion resistance of the propeller.