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Natural bamboo is used to make outdoor activities more interesting and interesting. Educate your baby how to operate and exercise your baby's coordination.More suitable for children's party use
Bamboo Dragonfly is a great invention in ancient China. When playing. Use your hands in reverse. Then the hand is loose. The bamboo poles will fly into the sky. After rotating for a while. Will fall freely and slowly. This simple and magical toy. The Western missionaries were amazed and called the "China spiral." The 1930s. The Germans invented the helicopter propeller according to the shape and principle of the "China spiral".
Selling point wooden bamboo raft propellers are more inert than plastic propellers. Rotation is faster. Flying higher. More interesting. This toy has been popular for 1500 years. Has not been eliminated so far. It is enough to show how interesting it is to children.
Working principle When the rotor rotates, the rotating blades push the air down to form a strong wind, and the air also gives the bamboo raft an upward reaction lift. This lift changes with the inclination angle of the blade, and the inclination is large. It is big, and the inclination is small and the lift is small. When the lift is greater than the weight of the bamboo raft itself, the bamboo raft can fly upwards.
TONGSHAO 10Pcs-Bamboo Dragonfly Flying Toy. Child Educational Toy That mimics The Rotation of Helicopter B07P95BJG2
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