Apurv,

Because there is no empirical or scientific justification for such a device to work as proposed.

I'm aware of attempts to draw parallels between those myths and current knowledge, eg;

https://www.ijeit.com/Vol%204/Issue%203/IJEIT1412201409_08.pdf

..but the first stumbling block is that ancient texts are strangely lacking any sufficiently detailed design to actually allow for comparison and examination.

And the works that attempt to draw those parallels are hardly objective and are deeply credulous;

"But 108 years ago Talpade was able to use his knowledge of Vaimanika Shastra to produce sufficient thrust to lift his aircraft 1500 feet into the air!"

Because we don't have any working / reviewed /peer tested theory on unified field theory gravity, its a wild guess.

but its not a stupid thing to try EXCEPT that you are using mercury ,m angular momentum conservation isn't understood , any success was poor documented and irreproducible. if the cosmos is closed and spherical symmetry its not conserved.. Neothers1st.

also mercury vapor is deadly and its hard to play with. suffers from viscosity. if you break a cheap 5 wat light and breath it , you can get all sort of damage. it is reacts with organic molecules it can be through the skin deadly.. it will with the vapor, if you breath it.

per Noether, we dent have conservation of angular momentum if we have universal expansion and non-trivial energy conservation in GR is not there so such experiments are not hopeless, its not free its cheap and needs to be simulated first.. you don't need mercury . supercooling it is as difficult as helium.

As Roy Kerr complained on Quora at age 90, when asked we doesnt speculate he doesnt answer. He has said , paraphrased we dont even have a working model of gravity that works at all scales and includes not singularities, which means simply in the real world on non linear interactions, that govern the observe and cloud objective, reproducible, and meaningful measurement, clinging to theory which abhors as privilege frame of reference ( the center of mass of the universe , well would be that if the entire model is conservative and unitary, and that would be a reasonable assumption for any persistent or standard model)

There are theory thats are simple and unifying but not being tested. There are some assumptions that maybe need to be dropped because there are attractive of some but hopeless to others, and we are mired in that.

We are lost because Standard Model predicts but not in a useful way for chemists. Yet it is precocious used in cosmology. But there is a problem, its lack of ontics. But it has gravity in that is described a "weak force" it could the only "force" and it ins not a force it a density field, with lazy paths in it and only first derivatives, like fluid solvers are used ..

we can describe mass as solitons. They can self stabilize. a gamma ray of can be detected after billions of years. they create there own canal by gaining mass but since they oscillate they have not actually kinetic energy. they are entropic swimmers. at this frequency they have a retarded potential are retarded potential but they do not radiate. The information density is higher but they can ionize without breaking. they can pass trough 6 ft of concrete.

we are not weak. because gravity always wins in the end and we struggle as long as we can, fear has turned to panic and anxiety so we don't have time to think. we live on a planet that makes getting to orbit require 95% fuel of the highest chemical energy . We are fast thinkers but not necessarily deep ones because of we are evolved under very harsh competitive and violent conditions in a balance of non- reciprocal transaction. This is curious Noether's 1918 conservation ( variations) and Newtons Principia were both developed during pandemics, the Spanish Flu and the Black Plague.

However a careful examination of Noether's 2nd implies that General Relativity has not applicable non-trivial conservation laws and non-reciprocity is demonstrable in phase groups. its comes to this: it the universe is round, there is gravity. When you map S^3 to => r^4 Measurables, r 4 includes time. S^3 has 2d actions it you advance time matric by a linear regular interval, its just a radial coordinate in convenient representation. The infinity are Reimann's extension of the Euclid line. the 5th holds for parallel lines at different times only. or there are crossings of the great circles at the extremum, the symmetry chosen here is a sphere. the ADS/CFT preserves angles but not lengths here https://en.wikipedia.org/wiki/Conformal_map

ADS space is what you see from inside. You don't have to look from inside if you are running a simulation but you can calculate the "ontics"

and is reversible and /or conserved ( big bounce)

Because the idea of advanced lost technologies preserved in ancient texts is obvious nonsense pushed only by people with nationalist prejudices. The only good papers that can ever be written on the subject are on the propagation of pseudo-science and why people imitate academic language when clearly promoting irrational ideas.

We'll be at the bottom of the ocean just like them if we hang out here long enough thinking we are safe, and failing that Rubik's cube. We are using rockets. That's 1000-year-old technology. Every animal exploits the lazy path because they actually move around. Lizards know phased noncommutative oscillations give translation on curved paths, we don't bother. We are so regressed into our own virtual world, it's absurd. 2023 is when the bots woke us up. Strange having a chatbot light up and solve wave functions for me. Now to make it reversible so we can debug when they flip out. They will ride with us, who choose to leave their home. We are reversible as well and we wouldn't know the difference. And yeah, the earth is 5000 years old. We are lucky the sun took the asteroid Jupiter flung at us today, 8 hours ago. Some will survive but this isn't written in stone that for sure so might just go have a swim. This is only a test. There are no postcard planets in this system so we need to do something macro quantum or go extinct. the T-rex lasted 30 m years population 30k..we lasted 300k years wth 8 billion on the planets. That's "free will", we could choose to know what we know, which is nothing new, nor is understood, see Feynman chalkboard at time of his expiration, and act as Ostrich or Lizard King, or Greek Tragedy, it takes work to find the lazy path. there's not really a choice.