Proof: Advanced Ancient Indian Civilization existed, page 26

Originally posted by Indigo_Child
We have have flying vehicles described over and over again in ancient Indian literature. Now, for the first time, see an ancient Indian document of aeronautical science, the Vyanmaika Shastra(VS) that gives us technical and schematical information on propulsion, energy, weapons, flight tactics, pilots food and clothes and metallurgy. This is the the most groud-breaking document ever and has been studied by many scholars, engineers and scientists from Europe and India from the early 20th century and onwards. It is currently being studied on the highest level of the Indian government and scientifiic community, at the Aeronautical Development Agency(ADA) of the Indian Ministry of Defence.

I'm not sure about your research but -

en.wikipedia.org...

A 1974 study by researchers at the Indian Institute of Science, Bangalore found that the heavier-than-air aircraft that the Vaimanika Shastra described were aeronautically unfeasible. The authors remarked that the discussion of the principles of flight in the text were largely perfunctory and incorrect, in some cases violating Newton's laws of motion. The study concluded

Any reader by now would have concluded the obvious – that the planes described above are the best poor concoctions, rather than expressions of something real. None of the planes has properties or capabilities of being flown; the geometries are unimaginably horrendous from the point of view of flying; and the principles of propulsion make then resist rather than assist flying. The text and the drawings do not correlate with each other even thematically. The drawings definitely point to a knowledge of modern machinery.

This can be explained on the basis of the fact that Shri Ellappa who made the drawings was in a local engineering college and was thus familiar with names and details of some machinery. Of course the text retains a structure in language and content from which its 'recent nature' cannot be asserted. We must hasten to point out that this does not imply an oriental nature of the text at all. All that may be said is that thematically the drawings ought to be ruled out of discussion. And the text, as it stands, is incomplete and ambiguous by itself and incorrect at many places.

The authors expressed puzzlement at the contradiction and errors in the Vaimanika Shastra text, especially since its compilers supposedly had access to publications that did not make such errors

J. B. Hare of the Internet Sacred Text Archive in 2005 compiled an online edition of Josyer's 1973 book, in the site's "UFOs" section. In his introduction, Hare writes

The Vymanika Shastra was first committed to writing between 1918 and 1923, and nobody is claiming that it came from some mysterious antique manuscript. The fact is, there are no manuscripts of this text prior to 1918, and nobody is claiming that there are. So on one level, this is not a hoax. You just have to buy into the assumption that 'channeling' works. ... there is no exposition of the theory of aviation (let alone antigravity). In plain terms, the VS never directly explains how Vimanas get up in the air.

The text is top-heavy with long lists of often bizarre ingredients used to construct various subsystems. ... There is nothing here which Jules Verne couldn't have dreamed up, no mention of exotic elements or advanced construction techniques. The 1923 technical illustration based on the text ... are absurdly un-aerodynamic. They look like brutalist wedding cakes, with minarets, huge ornithopter wings and dinky propellers. In other words, they look like typical early 20th century fantasy flying machines with an Indian twist.