The influence of screw propellers manufacturing accuracy on conditions of the propulsion system operating

Further provided calculations were based on the example of the Ka series ducted propellers.

2 THE IMPACT OF THE ACCURACY OF THE PROPELLER DIAMETER D

Propellers of inland vessels often work in very difficult conditions. This results in a fairly rapid mechanical consumption of propellers (abrasion and deformation). Propellers are also mostly performed in a technology giving low accuracy (welded carbon steel). Most of these results in negligently manufacturing of propellers (Dudziak, 1988).