Detailed guidelines for making aircrafts - 7000 BC India

Ancient Indian Maha Rishi Bharadwaj had written about planes and diet of pilots

According to a paper the ancient Indian sage Maharshi Bharadwaj had given detailed guidelines for making aircrafts. It says that sages and scientists had written about them as early as 7000 BC. In fact the presenter of the paper at the Indian Science Congress exhorted young scientists to attempt making metal alloys as per the Maharshi's book 'Vimana Samhita' for plane making. [Yes, that's great.]
And India also had a radar system! [ :-) ] And there a prescribed diet for pilots. Pilots had to wear clothes made out of vegetation grown underwater.
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"... There are 97 reference books for aviation. In Brihatvimanshastra, he has given 500 guidelines ... The Maharishi ... defined an aeroplane as “a vehicle which travels through air from one country to other, from one continent to other, from one planet to other.” ... Captain Bodas also spoke of the “jumbo” aeroplanes of ancient India. “The basic structure was of 60 by 60 feet and in some cases, over 200 feet,” he said, some with “40 small engines”.
The ancient Indian radar system was called, rooparkanrahasya. “In this system, the shape of the aeroplane was presented to the observer, instead of the mere blimp that is seen on modern radar systems,” he said. ..."

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Find this at http://www.thehindu.com/news/cities/mumbai/first-man-to-build-and-fly-an-aircraft-was-indian/article6753840.ece .