down here that would be impressive, 2400 rpm
thing would be shooting skyward in no time
but its such a thin atmosphere there
like swimming in air
The larger RC helicopters here on earth spin about the same speed.
They have blades that are narrower in chord, but that's because of the thicker atmosphere.
Ingenuity's blades are shaped more like propellers than typical helicopter rotor blades because they would get more 'bite' in the Mars atmosphere.