Flying machines in ancient India—myth or reality?

The Vedic literature of India contains many descriptions of flying machines called Vimanas. Scholars have discovered detailed accounts of the construction and operation of several types of civilian and military flying machines. The aircraft used for military purposes employed weapons capable of destroying large concentrations of soldiers on the ground and entire cities, with consequences resembling the use of nuclear weapons. Were these the mere ramblings of imaginative writers, or evidence of ancient advanced technology? Decide for yourself.
http://www.hinduwisdom.info/Vimanas.htm

Here is a related site:
http://www.hinduwebsite.com/sacredscripts/hinduism/vimana/ancientvimanas.asp