Diving beetle robot

Scientific revelation

Beetles are insects of the order Coleoptera, which is the largest order in the class Insecta. Insects of this order have hard body walls, especially the forewings are keratinized, so they are generally called beetles. There are approximately 330,000 known species of insects worldwide, accounting for about one-third of the total number of known insects in the world. In China, there are nearly 7,000 known species. Apart from the ocean, they are distributed on land, in the air and in various water bodies, with the largest number of terrestrial species. Some parasitize inside other insects, some outside mammals, some live in animal feces, carcasses, dead branches and leaves or soil, some reside in the nests of birds or rodents, or in the nests of certain social insects (such as ants or bees), and there are also warehouse pests. The diet of beetles is very complex, including saprophytic, fecal, cadherous, herbivorous, predatory and parasitic, etc. There are many herbivorous species, which are important pests in agriculture and forestry. Among predatory beetles, many are beneficial to humans, such as those from the Ladybug family, the beetle family and the tiger beetle family, etc.

Now that we have learned about beetles, let's make a small boat in the shape of a beetle together.

Scientific production

Prepare the materials needed for the test, such as EVA base plate, DIY eyes, fan blades, motor, battery box, etc

2. Install them in sequence according to the instructions.

3. After installation is completed, proceed with debugging.

Scientific principle

The principle of converting electrical energy into mechanical energy is that the motor drives the fan blades to rotate, generating air to push the small boat forward.

Science Expansion

The first person to propose the idea of the propeller was the Swiss Bernhard. One day in 1752, when Bernhard was taking a break after completing his physics experiments, he saw a carpenter in the yard doing carpentry work. He watched from the side for a long time, as if possessed. It turned out that the movement of the screw drilling through the wooden board had aroused its interest: the screw turned clockwise and moved forward into the wooden board. A reversal led to a retreat. He thought how convenient it would be if this principle could be applied to the propulsion of ships. However, in that era, due to the lack of appropriate power machines, the cameras made with great effort could not be realized at that time. With the advent of Marine steam engines, people began to take an interest in Bo's ideas. In 1835, the Australian Russell built a small motorboat with a "tail", which extended a long screw to the underwater part as a propeller. The machine started up, creating waves and the ship's speed was 7 nautical miles per hour.

Scientific exploration

What scientific knowledge have you learned by assembling the beetle robot?

2. What does the beetle robot resemble in daily life?

What is the principle of the beetle robot's forward movement?