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Adult dragonflies generally fly in ponds or rivers to hunt flying insects. In addition to a large number of mosquitoes, flies and other harmful insects, some can also prey on butterflies, moths, bees.
Dragonflies can be divided into the suborder Paraptera and damselflies of the dragonfly family.
There are only three kinds of dragonflies in the order Mesoptera (Bundle Wings), which are in Japan, India, and China, and this suborder has living fossils.
It is known as the oldest in China. It is also a very primitive insect in the winged subclass. The larvae, called larvae, are completely aquatic and have a completely different morphology and habits from the adults.
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Dragonflies can stay in the air anywhere, and through the study of dragonflies, humans have invented a helicopter that can stay in the air and take off vertically.
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<> hello! The dragonfly's ability to fly is a revelation for human inventions.
One of the most famous is to improve the safety of aircraft flight according to the principle of dragonfly low flight, which relies on the nervous system.
Controlling the angle of inclination, subtly adapting its flight speed to the air pressure, while on the other hand, there are some spots on the wings of the dragonfly, which effectively control the wings from vibrating and shaking, making the flight stable.
According to this, scientists applied this characteristic to the aircraft, and thickened some parts of the wings of the aircraft, which effectively solved the problem of flutter and ensured the safety of the aircraft.
Secondly, the entire fuselage of the aircraft is also made in imitation of dragonflies, so the inspiration of dragonflies to human inventions is very large.
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1. Dragonfly has superb flying skills and is an important research object in biomimetic engineering. In addition, its large compound eyes allow it to easily catch small prey in high-speed flight, and its field of view is almost 360 degrees.
2. Dragonfly is an excellent mosquito catcher, like a small airplane, with strong flight ability, known as the "aviator" of the insect world.
3. Dragonfly is also a qualified "weather forecaster". If they fly low in the air in groups, it is a sign that heavy rain is coming.
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Based on the special structure of the dragonfly's "compound eye", human beings invented phased array radar. As the speed of the aircraft continues to increase, the wings of the aircraft are shattered due to violent shaking. After research, scientists found that the dragonfly has a slightly heavier object at the end of its wings, which keeps the plane balanced.
Dragonflies have a lot of flying stunts. In flight, they often take turns vibrating their forewings and hindwings, and suddenly they glide with their wings straight. Occasionally, only the front wings vibrate, while the back pair of wings are calmly extended.
Dragonflies can not only fly forward, but also backwards.
They vibrate their wings and stay in the air for a short distance, even when hunting prey, and they can fly vertically for short distances. However, when flapping their wings, they can also experience harmful flutter. Nature has given them the means to eliminate this harmful phenomenon.
It is not difficult to find that above the leading edge of each wing of the dragonfly, there is a thickened dark cuticle - the wing eye (wing nevus), which is their special device to eliminate the hidden danger of flutter. Although dragonflies will not lose their ability to fly if they remove their wing eyes, it will affect the correctness of wing vibration, making their flight wobbly and floating like "drunks".
People were inspired by this, and an invention was made to prevent flutter. A weighting device is placed on the leading edge of the wing end of the aircraft (the simplest is to weld a lead weight) and harmful vibrations are eliminated.
Don't forget to divide it.
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