Sanskrit documents which describe how to build Space craft and extraordinary weapons
Ancient Indian texts on Vimanas are so numerous it would take several books to relate what they have to say.
The Ramayana describes a Vimana as a double-deck, circular (cylindrical) aircraft with portholes and a dome. It flew with the speed of the wind and gave forth a melodious sound (a humming noise?).
Sanskrit texts are filled with references to Gods who fought battles in the sky using Vimanas equipped with weapons as deadly as any we can deploy in these more enlightened times. For example, there is a passage in the Ramayana which reads: The Puspaka car that resembles the Sun and belongs to my brother was brought by the powerful Ravan; that aerial and excellent car going everywhere at will.... that car resembling a bright cloud in the sky.
".. and the King [Rama] got in, and the excellent car at the command of the Raghira, rose up into the higher atmosphere."
In the Mahabharatra, Asura Maya had a Vimana measuring twelve cubits in circumference, with four strong wheels.
The Ramayana, does have a highly detailed story in it of a trip to the moon in a Vihmana (or "Astra"), and in fact details a battle on the moon with an "Asvin" airship. This is a small bit of evidence of anti-gravity and aerospace technology used by Indians.
The Mahabhrata records the use of other deadly weapons. 'Indra's Dart' operated via a circular 'reflector'. When switched on, it produced a 'shaft of light' which, when focused on any target, immediately 'consumed it with its power'.
In one particular exchange, Krishna, is pursuing his enemy, Salva, in the sky, when Salva's Vimana, the Saubha is made invisible in some way. Undeterred, Krishna immediately fires off a special weapon: 'I quickly laid on an arrow, which killed by seeking out sound'.
Many other terrible weapons are described, quite matter of factly, in the Mahabharata, but the most fearsome of all is the one used against the Vrishis.
The narrative records:
Gurkha flying in his swift and powerful Vimana hurled against the three cities of the Vrishis and Andhakas a single projectile charged with all the power of the Universe. An incandescent column of smoke and fire, as brilliant as ten thousands suns, rose in all its splendor. It was the unknown weapon, the Iron Thunderbolt, a gigantic messenger of death which reduced to ashesthe entire race of the Vrishnis and Andhakas.
The after-affects of this Iron Thunderbolt have an ominously recognizable ring. Apparently, those killed by it were so burnt that their corpses were unidentifiable. The survivors fared little better, as it caused their hair and nails to fall out.
There are Sanskrit documents which describe how to build a Vimana!
In the Sanskrit Samarangana Sutradhara, it is written: Strong and durable must the body of the Vihmana be made, like a great flying bird of light material. Inside one must put the mercury engine with its iron heating apparatus underneath. By means of the power latent in the mercury which sets the driving whirlwind in motion, a man sitting inside may travel a great distance in the sky. The movements of the Vimana are such that it can vertically ascend, vertically descend, move slanting forwards and backwards. With the help of the machines human beings can fly in the air and heavenly beings can come down to earth.
The ancient Indians wrote entire flight manuals on the control of the various types of Vimanas, many of which are still in existence, and some have even been translated into English.
The Samara Sutradhara is a scientific treatise dealing with every possible angle of air travel in a Vimana. There are 230 stanzas dealing with the construction, take-off, cruising for thousand of miles, normal and forced landings, and even possible collisions with birds. In 1875, the Vaimanika Sastra, a fourth century B.C. text written by Bharadvajy the Wise, using even older texts as his source, was rediscovered in a temple in India.
It dealt with the operation of Vimanas and included information on the steering, precautions for long flights, protection of the airships from storms and lightning and how to switch the drive to "solar energy" from a free energy source which sounds like "anti-gravity." The Vaimanika Sastra (or Vymaanika-Shaastra) has eight chapters with diagrams, describing three types of aircraft, including apparatuses that could neither catch on fire nor break. It also mentions 31 essential parts of these vehicles and 16 materials from which they are constructed, which absorb light and heat; for which reason they were considered suitable for the construction of Vimanas.
This document has been translated into English and is available by writing the publisher: VYMAANIDASHAASTRA AERONAUTICS by Maharishi Bharadwaaja, translated into English and edited, printed and published by Mr. G. R.Josyer, Mysore, India, 1979. Mr. Josyer is the director of the International Academy of Sanskrit Investigation, located in Mysore. There seems to be no doubt that Vimanas were powered by some sort of "anti-gravity." Vimanas took off vertically, and were capable of hovering in the sky, like a modern helicopter or dirigible. Bharadvajy the Wise refers to no less than seventy authorities and 10 experts of air travel in antiquity! (These sources are now lost!)
Vimanas were kept in a Vimana Griha, a kind of hanger, and were sometimes said to be propelled by a yellowish-white liquid, and sometimes by some sort of mercury compound, though writers seem confused in this matter. It is most likely that the later writers on Vimanas, wrote as observers and from earlier texts, and were understandably confused on the principle of their propulsion. The "yellowish- white liquid" sounds suspiciously like gasoline, and perhaps Vimanas had a number of different propulsion sources, including combustion engines and even "pulse-jet" engines. There are so many such texts and most of them have not even been translated into English yet.