The Vimanika Shastra
From PhalkeFactory
"This is the English translation of the Vimanika Shastra, which purports to be an ancient Hindu manuscript on the construction and use of flying machines. You can read too, this book on line on Books-Google."
"This is the English translation of the Vimanika Shastra, which purports to be an ancient Hindu manuscript on the construction and use of flying machines. You can read too, this book on line on Books-Google."