Winged God of the Great Bird

Scientific Enlightenment:

The dream of human flight began with the imitation of bird flight, and humans have always wanted to fly like birds. How to fly??Firstly, the natural thought is to imitate birds. In the "Legend of the Condor Heroes," the flying Leizhenzi has bird-like wings. In some ancient murals and stone carvings at home and abroad, there are many human figures with wings, such as the feather people in the Dunhuang grottoes and the two-wing and four-wing flyers in the Eastern Han Wu Shi stone chamber in Jiuxiang, Shandong. In history, there are also many practical imitations of bird flight. It is said that 4000The Yu Dance from many years ago, holding a bamboo hat, jumped off the burning warehouse roof to escape the persecution of her stepmother and younger brother. There is such a description in the "History of the Former Han Dynasty: To resist the invasion of the Huns, Wang Mang widely recruited people with unique skills. A young man who came to apply was a hunter. He made a pair of large wings with bird feathers and tied them to his arms, and also tied the feathers of birds on his head and body. He stretched his arms straight, opened his wings, and glided down from a high place like a hawk, flying for hundreds of steps. In foreign countries, many people have also imitated bird flight. For example, 600A Turkish man, wearing a cloak supported by a frame, flew many years ago, but was killed when the frame broke and he fell to his death.1503The Italian, D'Annunzio, flew with feathers as wings.1507The British people-Fenghi designed a human-powered wing sketch, Damian, also used chicken feathers to make wings to fly, but they both failed.l742Year, the Frenchman Baccivel, will4A person with wings bound to his arms and legs attempted to fly over the Seine River from the roof of a hotel in Paris, but ended up falling into the river and crashing into a boat, breaking his legs. On the other hand, some people were not so rash and impatient. They also wanted to imitate bird flight, but first studied the principles of bird flight. Ge Hong of the Eastern Jin Dynasty pointed out in his book "The Book of Simple and Uncarved Wisdom" that eagles can soar by extending their wings and use rising air currents to fly higher. The practice and research of imitating bird flight proved that humans cannot fly in the air with their muscle power. Humans do not have the streamlined heads of birds, and their bodies are too large and too heavy, with too small chests and hearts. The high-flying vultures have hearts that account for only a small proportion of their body weight.8%The quick and nimble hummingbird actually accounts for22%"。1.8以上，人的心跳太缓慢，一般为70timeSlashAbout a minute, the heart rate of a sparrow reaches 1500 beats per minute when it flies.800However, the way and principles of bird flight have a significant enlightenment for human flight, and humans must learn from birds to use machines with mechanical wings to lift their body weight to achieve flight in the air.

Science Project:

1. Assemble the flapping wing activity support.

2. Assemble the bird body.   

3. Install the bird power rubber band.

4. Install the wing-flapping support to the bird body rod.

5. Adjust and check the accuracy of the installation of all parts.   

6. Bird wings and bodies covered with paper.

7. Tighten the rubber band, and when you let go, it will fly away.

Scientific Principles:

This is a paper bird that imitates the flight principle of a bird. It is powered by an elastic band, which drives a small crankshaft to rotate. The rotation of the crankshaft makes the wings move up and down, thus driving the paper bird to fly. Because the paper bird is light, the energy of the elastic band and the flapping of the wings are enough to make the bird fly into the sky and glide.

Scientific Inquiry:

What is the most important part of the bird's production?

What are the main factors that lead to the take-off of birds?