Vimanas are the mythical flying machines chronicled in the ancient Sanskrit epics of India. The story of the Vimana predates Christ by many thousands of years, and the Hindus of today’s India believe the existence and usage of Vimana to be historical fact. There is a plethora of ancient Indian literature which deals with the Vimana and its many aspects. Most of the epics await translation. One epic, titled Manusa, gives clear instructions on how to build the craft and the proponents that make them able to fly. Other texts have names such as ‘The secret of making Planes invisible’, ‘The Secret of hearing conversations and other sounds in Enemy Aircraft’ and ‘The secret of making Planes motionless’. There are many other texts about Vimana which are spoken of in the epics, but have not yet been discovered. Many texts speak of ships and planes with nuclear capabilities and a great nuclear war that took place. In the ancient ruins of Mohenjo-Daro, once part of the Indus Valley Civilization, 3000 year old skeletons where found with radioactivity levels that surpassed that of the bodies at Nagasaki and Hiroshima. The ruins themselves also emit high radioactivity levels. It is a documented fact that the city was destroyed suddenly.
The wording of the texts is highly technical, and speaks at a high level of intellectual maturity in areas such as physics and aero dynamics. One text of the Vaimanika Shastra, which translates as ‘Science of Aeronautics’, includes 230 stanzas, concerning aviation matters such as construction, take off, cruising for thousands of miles, normal and forced landing, protections of the airships from storm and lightening and how to switch the power source to solar energy from free energy. The same text describes at great detail the construction of the mercury vortex engine, which is the forerunner of the Ion vortex engine used today by NASA. In 1895, a Sanskrit scholar named Shivkar Talpade designed an aircraft based solely on the Sanskrit document concerning the mercury vortex engine. The unmanned craft reached a height of 1500ft.
Apparently these machines have been written about and discussed in great detail for thousands of years. Hell, someone made one and flew it.