i think i understand what you're saying, and as for increments of time, it is to be for levitation off of the ground so I am not sure how i would convert that into time increments, oh and thanks for the help.
if i had a circular fan with 8 blades and the diameter of 1 foot, how fast would it have to spin to push 125 Lbs of air?
if the angle of the blades would matter, it would be around 45°
if more specifications are needed, please let me know