Aluminum tunnel for thruster, bow thruster aluminum, tunnel for bow thruster

1, What is an aluminum tunnel for a thruster, a tunnel for a bow thruster?

The model of the bow thruster and the size of its propellers will define the tunnel's diameter. The term "tunnel diameter" describes the tube's internal diameter. The optimal tunnel length is between 2 and 4 times the tunnel diameter.

Too-short tunnels permit the propeller to cavitate, which reduces performance and generates a lot of noise. Too-long tunnels have more internal friction, which lowers thrust. When the tunnel length exceeds six or seven times the diameter of the tunnel, this becomes very obvious.

Tunnel Installation Advice: To prevent the propeller from drawing air from the surface, which would fully cancel out the thrust, the tunnel should be positioned as deep as it can be. Additionally, the water pressure on the propeller blades increases with prop depth, increasing propeller efficiency.

Typically, the roof of the tunnel should be at least half as deep as the tunnel itself. We advise that it be at least 3/4 times the tunnel diameter below the waterline, which is the absolute minimum. 1 times the tunnel diameter below the water's surface would be an even better distance.

2. Specifications of the aluminum tunnel for thruster

3. Main aluminum alloy product brand list