How to calculate the desired rotation speed?

Question

Physics

How to calculate the required rotation speed and the size of the blades to lift, say, 100 kg into the air.

Answer 1

fix the tags, for starters. none fit.
then point by point:
//at the same time understanding that "rotation speed and blade size" are not all variables of your equation.

Answer 2

ooh, you're in the wrong area, man. everything is very complicated with screws, in fact, this is evidenced by at least the fact that to calculate thrust you need to get an alpha coefficient, which depends on the lambda coefficient, which depends on your speed, rotational speed, diameter. And the power is found through the beta coefficient. In general, everything is difficult. And this applies to a greater extent to an aircraft propeller; for lifting, the propellers are considered a little differently and call the parameters differently. First, decide what screw do you need? Are you collecting a helicopter? maybe a quadrocopter is easier? (yes, it's really easier!) Then you need 4 screws already. Are you going to cut them yourself with sandpaper? no, then look for ready-made screws on sale, and for them, full-fledged characteristics or background information. For a thought experiment, this is quite enough.
a link to one of several calculation programs that I found on Google. This is for aircraft, apparently. Once upon a time I found almost the same file for propellers of helicopters and gyroplanes.
There is also a book that is unlikely to help much, but it will be interesting to read it, since it is modern and it is written about SVP - Ostroukhov "Aerodynamics of propellers and ring propellers"