kmguru said:I think there were two types of Vimanas. One was moving through air and other in deep space. For moving through air, all you have to do is ionize the air and run current through it which can create a force if you have the magnetic field strong enough for the item to move in the air.
For deep space...I do not think any kind of standard propulsion will work no matter how much thrust...you have to punch through space using some unknown mechanism. One of these days, someone will figure out to create either sometype of gravitational or magnetic force.
According to the Vymannika Shastra, "There are seven sources of power of the vimaana: fire, earth, air, sun, moon, water and sky. The seven kinds of powers are named udgamaa, panjaraa, solar heat absorber, alien force absorber, solar electric dozen, kuntinee, and primary force."
We already know of fire, water (hydro), air, sun (solar) power, but what do you think the earth, moon, and sky power could mean? Could earth mean mechanical, and moon mean magnetic? And what is this primary force it speaks of?