Did you know that there are fans that go up to 40k RPM in speed?
They can go faster because the material would disintegrates. There like 30k Gs or force in the blades, as much G force as half of what a bullet being fired from a gun has! 😱

Did you know that there are fans that go up to 40k RPM in speed?
They can go faster because the material would disintegrates. There like 30k Gs or force in the blades, as much G force as half of what a bullet being fired from a gun has! 😱

They are small, but I estimate the outer blade is doing about 300km/h! I expect they are noisy.