Physicists have studied the features of the flight of a mosquito in the rain
Scientists managed to describe in terms of dynamics the moment of collision of a raindrop and a flying mosquito. This observation helps explain how mosquitoes can continue flying when it rains. For the first time, the results of observations were published in the scientific journal Proceedings of the National Academy of Sciences.
During the experiments, the scientists were tasked with studying and explaining the basic principles of the interaction of a raindrop and a flying mosquito. A special high-speed camera was used as the main experimental equipment. The mosquito was in a special installation, where real rain was simulated with the help of a pump.
It is worth recalling that the average size of a mosquito is about 3 mm, and the mass of this insect is only 2 mg. A raindrop has a diameter of about 2-3 mm, but its mass can reach 100 mg. Thus, the vertical velocity of the falling drop can reach 9 m / s. It was also found that, on average, a mosquito is hit by droplets about 1 time in 20 seconds.
According to the observations of physicists, the mosquito behaves differently depending on the local impact on the body. So, when a drop hits the legs, the mosquito tumbles a little to the side, while the direction of its movement practically does not change. If a raindrop falls on the body of a mosquito itself, then the insect for some time decreases by an average of 6 cm, after which it is freed from the drop.
According to scientists, a simple falling drop is quite capable of destroying a mosquito on a hard surface. However, the interaction of a droplet and a mosquito in the air looks different. At the same time, the mosquito experiences an overload of the order of 100 g, but this is not dangerous for it. Physicists argue that lowering the flight altitude of a mosquito at the moment a drop enters it allows you to extinguish energy and reduce the speed of its transfer to the mosquito, while the drop falling speed practically does not change. That is why when a mosquito collides with a raindrop in the air, the insect does not die.
To date, there are practically no results of studying the features of biomechanics in relation to the flight of insects in the rain. Scientists hope that the observations made may initiate a more careful study of a similar topic. Research in this direction can become extremely useful, since in the future it will be possible to talk about the creation of miniature aircraft.