Originally Posted by
LAfrequentflyer
Turbo-prop is a turbine jet engine with the blades on the outside (propellers) - right?
Well, they still have the same blades on the inside, but they also have propeller blades on the outside. The propeller blades on the outside are usually driven by the air being moved by the jet engine. Sort of like an automatic transmision without fluid. Others are driven off of the shaft of the turbine through a gear reduction gear box.