CORROSION-PROOF STRUCTURE OF WATER JET PROPELLER

摘要

PROBLEM TO BE SOLVED: To provide a corrosion-proof structure of a water jet propeller, capable of preventing cavitation damage to a blade due to bubbles. SOLUTION: The corrosion-proof structure of the water jet propeller having an impeller 4 rotatably arranged in a housing 6 for providing driving force by jetting backward a water sucked with the rotation of the impeller 4, for preventing the cavitation damage to a blade surface (f) due to bubbles generated on the blade surface (f) and broken with the rotation of the impeller 4, comprises a communication part lid formed at the front side and in the vicinity in the rotating direction of a cavitation damage generated area B on the blade 11 for communicating the surface (f) side of the blade 11 with a reverse (g) side.