Hi all. In regard to nobi's question of how i made the propellers of my fokker 50 in rhino, i decided to post it here in order to make future browsing of specific topics easier.. It's better if we can include all the other different propellers (ship or plane) and building methods. Anyway, Here's a shot of a propeller blade of the fokker. One will observe that the blade angle at the root of the propeller is greater than the tip chord. Therefore, there's a twist. why this is so has many reasons in the aerodynamics and structural aspects. Aside from looking really wicked (let's face it. Twisted stuff are really cool! :twisted: twisted metal, twisted poems, twister fries, twisted doughnuts), a twisted blade design assures that the thrust produced at varying distances from the root to the tip are equal. Also, since the tip travels at speeds greater than the root of the blade, a large angle of attack would create unwanted loads in the propeller and engine. also well, greater noise levels. Anyway, here's how i built the props. It's really simple. since the props will really be small, not much details are needed. It's also important that the designer/modeler has enough data about the props to be made.