How fast can a propeller turn?

[Exhaustgases]

Maybe 12,000 rpms.

https://www.youtube.com/watch?v=51BEbZlps80

[planecrazy2]

Re: How fast can a propeller turn?

Depends on the diameter and pitch of the prop and the power behind it.

[Wild Bill Kelso]

Re: How fast can a propeller turn?

All the way to maximum helical tip speed

[Exhaustgases]

Re: How fast can a propeller turn?

In other words waaaaayyyyy past the super sonic tip speed, is that what you all are saying ? Gosh I love it when the old thinking in the box is ruined. I knew this was possible 40 years ago.