Drones are everywhere. A few years ago, we saw them as small aircraft of the most exotic, but today we all saw or even used some. Therefore, how this happened when the cars ceased to be almost anecdotic and began to fill the roads and roads, we must study the problems associated with their agglomeration. In the case of drones, we did not reach dangerous levels of movement, but it was clear that they could gradually cause the great Noise pollution. Come on, they do a lot of noise. Urgently change their design in order to try to be less loud in the face of the future, but scientists complicate it. At least so far. And, according to some scientists from University of John HopkinsThe key can be in design Leonardo da Vinci.

We all know the innovative designs of the Italian genius. Despite the fact that he did not see a flying car in his life, he was able to develop gadgets that, when they were built, flew. For example, a case PropellerIt is considered some The modern predecessor of the helicopter.

The authors whose studies have recently been published studied the characteristics of this invention Leonardo da Vinci and came to the conclusion that This can be material And this, in this case, it will be a lot Less loud than current drones. It should be noted that the study still does not have a viewing of steam, so we should be caution. Despite this, this is curious. And we already knew that the inventor of Anchiano was a seer, but in fact we did not know what extent it was.

Why are the drones so noisy?

Drones are produced High -frequency pure sinusoidal tones. We call sinusoidal tones to those tones that consist of one frequency and, therefore, Completely clean. On the other hand, high -frequency tones are the most acute. This combination is considered the most irritating to the human earThe field besides when jumping to the ground, They become even stronger and more durableThe field as a result is the noise of the drones This is more annoying than its equivalent in aircraft or road trafficImagine a field of a future full of drones. The hair of the end.

All this is due to the ascending movement of the blades of drones. Its flight is very effective, but this annoying security deposit applies. Therefore, some scientists have already tried to solve; For example, a change in the materials by which the blades are made. But the reality is that Not all this is a matter of materials.

Scientists at the University of John Hopkins wanted to check various conformations of flying devices, in search of one that was not so noisy, regardless of the material with which it was made. This is how, analyzing the old sketches, they have reached the design of the famous Leonardo da Vinci screw.

What was Leonardo da Vinci’s air screw?

The Air screw Leonardo de Vinci was a device consisting of a large spiral screw designed to turn and create vertical support power. The authors of the study that was published Iflscience They do not know what made him think that the shape of the screw could be useful. Nevertheless, it is clear that if we take into account that there were no flying cars and, therefore, he did not see a single one. Despite the interesting design, Da Vinci never created a functional prototype. He did everything theoretically. Therefore, the first thing they wanted to check these researchers today was If I really could fly.

Leonardo da Vinci never built a functional prototype of his air screw. Credit: Timetravelrome (Wikimedia Commons)

But for this they were not based directly on the air screw, but ElikoThe prototype, created in 2020 by students of aerospace engineering of the University of Maryland. First, they developed a series of computing models to check whether the DA Vinci air screw can. The results were positive, but they were still sure, so they launched a prototype that could really fulfill Test flight. Already at that time, a student representative said that the device can be less noisy than ordinary helicopter rotors. They did not mention drones, but that would be completely extrapolated.

On the other hand, they noticed that Eliko could get the same amount of elevation, but with fewer rotations compared to the traditional rotor. This will reduce both annoying noise and Descending washingThe usual problem that reduces the level of aircraft height.

Step on

It was shown with Elico that the invention of the Italian genius would be realized, and it was suggested that it could have some additional advantages compared to current aircraft. Of course, the authors have just been published Eliko Digital model And he performed complex mathematical operations to find out their characteristics with accuracy and compare them with the characteristics of drones. Thus, they saw that the noise that makes the screw is The lowest toneand thanks to many whirlwinds, which also rotate outside their screw scatter fasterThe field also mechanical force, As Eliko’s developers have already felt, this is better than many current drones.

helicopter
With the invention of da Vinci, some problems of current helicopters are solved. Credit: Freepik

Should Da Vinci’s invention replace current drones?

All this does not mean that the conformation of drones should already be changed to replace it with the DA Vinci screw. But this means that it is important to reconsider this study in pairs and, if its results are preserved, continue to explore in this line. As their authors remember to improve the design of drones. Look at the past and nature that surrounds usThe field is two huge sources of inspiration.

Source: Hiper Textual

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