The topic of such aircraft as vimanas interested me for a very long time, as it seems to me that they could exist not only in the past, but continue to exist to this day. But first, it's worth dealing with everything.
What are vimanas? They are known to us from the myths and literature of ancient India. These are conical aircraft that moved in the air, no worse than our modern aircraft.
In general, again from myths and legends, we know that vimanas supposedly could reach quite large sizes. In addition, some of them flew really fast, it would even be more correct to say very fast, the "gods" in them could cross huge distances in minutes.
Now it's time to move on to some interesting points. It is worth starting with Egypt, since there is a mention of the same Vimanas. From one story, we know how one of the pharaohs traveled around the world, literally in a matter of minutes on some kind of apparatus.
We can say that all these are myths, and only, although I am sure that all myths and legends are based on a fraction of reality. But it is worth moving on to our time and our civilization.
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Probably many people know that Hitler was interested in the development of Wimans, and in other fairly global things, including the mysterious Antarctica. This cannot be called some serious argument, but the fact remains, in our time, devices allegedly from myths were interested.
For me personally, vimanas are the same "plates", only in a transformed form. Sometimes I even have the idea that ordinary people are in the saucer-shaped UFOs, we just don't know much and someone created them all the same.
But what about the vimanas themselves? The widespread version, which I also adhere to, is that the "gods" are an extraterrestrial highly developed civilization that visited Earth in the past.
Based on this, it can be assumed that the Vimanas are a very real aircraft of antiquity. And it is quite possible, as I said above, that the vimaanas could be transformed into "plates" and now they already look exactly like that. That is, alien civilizations, in theory, can still continue to observe the development of mankind.
Unfortunately, there are no "hard facts" about this version. One can only speculate, but this is my subjective opinion about the aircraft of the past, called vimanas.