Comments by "Solo Renegade" (@SoloRenegade) on "DIY Perks" channel.

And when you learn there is new aerodynamics out there that can reduce the fan noise by 66% at a given energy consumption, while simultaneously increasing thrust by 24%, suddenly any remaining advantages start to evaporate rather quickly. But it is a neat idea/project. This is the sort of thing that would have been an excellent college project for students.
1