Ex Cargo Clown
I don't quite know why you would mount it on a prop.
The idea would be in days that a supersonic wind-tunnel didn't exist you could still get a supersonic tip velocity by spinning a sufficiently large diameter prop fast enough with a model on the tip
You'd have all manner of other forces acting, centripetal etc plus the prop itself would ruin any chance of any kind of analysis.
The prop would produce interference effects? Would the model need to be curved (to form the shape of the edge of the prop disc to deal with the fact that it would be spinning rather than going straight) or not?
A supersonic wind tunnel isn't a difficult thing to achieve theoretically, it just requires high pressure gas, and a control of pressure. Realistically it's a right pain, because you need a very high pressure to get the necessary gas velocity.
To some extent I understand how a supersonic wind-tunnel works. Convergent/Divergent with slots in the area where the model is to avoid shockwaves from bouncing off the walls of the tunnel and messing up the readings.