Transcavitating propeller

摘要

A propeller blade for a multi-bladed propeller comprises a radial inner portion, a radially outer portion and a transition portion extending therebetween. Generally, the leading edge of the blade portions are colinear and the trailing edges of the inner and outer blade portions are offset from each other so that shoulders are defined on the transition portion and the outer blade portion has a higher blade angle of attack than the inner blade portion. The shoulders extend from the leading edge to the trailing edge of the transition for providing flow stability and blade reinforcement.