What does the flying style of geese inspire bionics?

The contribution of birds to mankind is well known. Birds also have a special function, which is to inspire human wisdom and provide principles and blueprints for human beings to explore ideal technical devices or vehicles. It can be said that birds are human teachers in structure, function and communication, and scientists often need to ask birds many modern scientific and technological questions. Eagles hit the sky, pigeons soar in Wan Li, and birds can fly freely in the air. How attractive and inspiring it is! Legend has it that more than 2,000 years ago, China famous craftsman Lu Ban studied and made wooden birds. According to historical documents, more than 900 years ago, people in China tied birds' feathers together to make wings that could glide 100. More than 400 years ago, Italian Leonardo da Vinci designed a flapping-wing plane based on his observation and research on birds, trying to fly with the movement of pedals. Later, after many scientists' experiments, people understood the mechanism of fixed-wing gliding of birds, and realized that the wing must be as thick as the bird's wing, with a thick leading edge and a thin trailing edge, in order to form a curved surface and generate lift. In addition, the industry provided light metal materials and high-power engines, and finally the airplane was invented in 1903, which realized the ideal that human beings longed to fly into the sky for thousands of years. Since human beings invented the plane and flew into the sky, they have been constantly innovating the plane, and they have quickly surpassed birds in size, load and speed. Modern airplanes have flown faster, farther and higher than any kind of birds, especially in recent years, all kinds of airplanes can sail between stars, which birds can't reach. Nevertheless, in some flying techniques and aircraft structures, man-made aircraft are still not as perfect and exquisite as birds, not to mention energy consumption. For example, golden pheasant can fly more than 4000 kilometers over the ocean without losing 60 grams. If the plane can fly at this efficiency, it will save a lot of fuel. Birds' wings have many special functions and structures, which make them not only good at flying, but also perform many "stunts" that are difficult for human technology to achieve at present. Hummingbird is a "helicopter" among birds. It can take off and land vertically and fly backwards. When sucking nectar, it does not stop on the flower like a bee, but hovers in the air. What a clever flight this is. It has become the dream of many aircraft designers to make vertical take-off and landing aircraft with hummingbird flight characteristics. The eagle's eyes are extremely keen. Eagles flying at an altitude of two or three kilometers can find rabbits and mice from many relatively moving scenes by scanning the ground with their eyes, and dive down quickly to catch them at one stroke. Hawkeye also has the characteristics of sensitivity to moving targets and rapid adjustment, and can accurately identify targets. With the development of modern electro-optical technology, it is possible for us to study a system similar to Hawkeye, which can help pilots identify ground targets and control missiles at the same time. The migration distance of migratory birds ranges from several hundred kilometers to several thousand kilometers. However, they can always reach the destination chosen by generations accurately. This shows that migratory birds have good navigation ability. Scientists have studied these phenomena and believe that birds have good navigation ability because they all have their own special sensory organs, which can feel and analyze the changes of environmental factors in different regions of nature, so as to identify the direction and find the migration route. Some rely on identifying the position of the sun and using the sun as a direction marker; Some use astrology to navigate by identifying the orientation of the stars; Some rely on sensing changes in the earth's magnetic field and using geomagnetic navigation; Others use the earth's gravity field to navigate. After understanding the principle of bird navigation, bionics and designers can imitate and manufacture all kinds of small and reliable navigation instruments and make contributions to the development of aviation and navigation. Inspired by penguins, people designed a new type of car-"Penguin brand polar off-road vehicle". This kind of car is stuck on the snow surface with wide bottom and pushed forward with a wheel spoon, which not only solves the polar transportation problem, but also can drive in muddy areas. In addition, the unique physiological structure and function of birds also provide many bionics topics for the innovation of mechanical systems, instruments and equipment, building structures and technological processes. Therefore, birds are both friends and teachers of human beings. For the future of science and the happiness of mankind, we should also take good care of birds. Birds give us a lot of priceless inspiration: when people see birds in the sky, they will think of a machine that can take us flying in the sky … an airplane; The firmness and steadiness of the mountain carving flying to the ground instantly make people feel that they can fly down from the sky and land safely; Dragonflies in flight inspired human beings to create helicopters; The clever and silent flight of owls changed the performance of aircraft; The elegance of swans flying on water made seaplanes come out. People who are willing to think can improve the function of aircraft by studying goldfinches, and pigeons can predict earthquakes. By observing the birds flying in the sky, they got inspiration and created miracles, which benefited us a lot.