paddle steamer

Why is a ship called a steamship when it doesn't have wheels? In fact, a simple wheel axle combined with propeller blades can transform into an impeller, becoming an important propulsion component for airplanes or ships. This type of ship is called a "steamship" because a part of its wheels are exposed above the water surface. Its principle is similar to rowing, where blade shaped paddles form a circle and rotate around an axis to propel water, which is more advanced than rowing. However, the splashing phenomenon of the paddles when entering the water and the lifting phenomenon when exiting the water result in energy loss, which is later replaced by more efficient propellers.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.