Originally Posted by
GrayHorizonsHeli
such a crappy video to tell, but perhaps its just camouflage painting techniques so that you have trouble telling the design from a distance as most auto manufacturers do.
I cant see 4 small fans being anywhere near efficient to carry out the task required.
Indeed. I can't imagine any benefit but can think of several detractions for this idea. 4 fans have 4 times as many parts to maintain. Small fans have to spin faster than large fans so are noisy and stressed. 4 fans mean 4 times the risk of something failing and high speed moving parts failing is very dangerous.