Ground clearance and prop speed are just as important on our models, mainly scale 'tail-draggers' ( which nose over on rough fields).

I was meaning to say that whilst working at the airport, I can confirm that some of the modern transport must have powerfull turbo-props judging by the noise of the tubines compared to other JETS.

Also, as already mentioned, the prop blades consisit of at least six blades, and they are very wide in section. Noise is a big issue these days - for full size.

I was wondering that multi-bladed props became popular after they were uses in aerobatic model competitions ie - pattern ships.
Is this due to having a braking effect when having the throttle right back when diving straight down??

A larger blade area with low pitch would be best??
Thats my understanding....