Areodynamics of ancient flying machines. Did they really worked for them?
Just a few points:


You are yourself conceding that these are from mythology. If something is from mythology, it is (almost) certainly a myth.
Description of a fictional flying machine and explaining their principles of operation are completely different. To the best of my knowledge, none of these texts even try to explain the principle of operation.
Actually, there was a study carried out on one of these texts, which thoroughly debunked the claims made and concluded,



  ... the planes described above are (at) the best poor concoctions, rather than expressions of something real.None of the planes has properties or capabilities of being flown; the geometries are unimaginably horrendous from the point of view of flying; and the principles of propulsion make then  resist rather than assist flying.