The geometric parameters are mutually interrelated and constrained,affecting hydrodynamic performance,noise,cavitations,vibration and so on.The performances of propeller are in conflict with each other,so improving some performances may lead to the deterioration of others.As for the purpose of energy saving,this paper combined particle swarm optimization algorithm with surface panel method theory forecast program and DTRC 4382 propeller was used as the original propeller.The curve of geometric parameters ca...