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Science and education toy science experiment model airplane novelty toy educational toy
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Product size: 190*100*80mm
Weight per unit: 0.065Kg
Packing Quantity: 200
Box Specification Size: 600*450*550 mm
Product Knowledge Principle: In summer, children often go to the park to play on boats, but these boats are different from the traditional rowing methods. Nowadays, the boats in the park are mostly cute-looking pedal boats, which are comfortable and convenient to ride. In fact, its principle originates from the steamboat. Now let's take a look at the steamboat through an experiment.
1. Understand the composition and structure of a famous ocean liner.
2. Apply the principles and knowledge learned to life.
The original steamboat was propelled by stepping on wooden wheels with human power.
Steamboats are ships propelled by steam propellers, and they are an early type of mechanical power vessel. They evolved from the ancient Chinese wheeled boats.
After the modern era, steam engines were used on ships to become the ship's power, and the propulsion tool that cooperates with the steam engine is the paddle wheel. It is equipped with blades around the periphery of the rotor, becoming a rotatable paddle wheel, mounted on the sides or the stern of the ship.
The stern wheel is divided into side stern wheel and stern wheel according to the arrangement position.
Introduction to Principle Knowledge
The shaft that connects the propeller is fixed to the reaction gear within the gearbox. When pulling the cable of the gearbox, the gearbox's reaction gear has elastic potential energy. When you let go, the reaction gear reverses direction and releases the potential energy through the shaft, which drives the propeller to rotate. The elastic potential energy is converted into kinetic energy, making the propeller spin, thereby driving the steamboat to move forward.
Elastic Potential Energy
The parts of an object that undergo elastic deformation are subject to mutual elastic forces, and thus possess potential energy, which is known as elastic potential energy. The greater the deformation of the same elastic object within a certain range, the more elastic potential energy it possesses, and vice versa. In engineering, this is also known as elastic deformation energy. For example, compressed gases, coiled springs, or extended or compressed springs all possess elastic potential energy. Elastic potential energy can be directly converted into kinetic energy.
Knowledge Expansion
The propeller is a step forward from the oars, paddles, and rudders, its main feature being that it can operate continuously, converting human or mechanical power into the propulsion force of the ship, enabling the ship to move forward.
However, it is bulky and inefficient, especially in rough seas, where the propeller blades may partially or completely emerge from the water, making it difficult for the ship to navigate stabilily. Moreover, the propeller blades are prone to damage during use. When the propeller rotates, half of the blades are in the air, not only increasing the ship's width and resistance during navigation, but also making it easy to collide with adjacent ships when docked. This not only endangers the safety of its own operation but also poses a risk of damaging other ships. Additionally, if entanglements such as aquatic plants get caught in the propeller blades or shaft, the propeller may lose its ability to rotate.
It was the drawback of the paddle wheel propeller that by the 1860s, the paddle steamers were replaced by advanced steamships equipped with propellers.
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