PROPELLER HAVING NOZZLE FOR INJECTING AIR

摘要

PURPOSE: A propeller containing a nozzle for injecting air is provided to reduce variable pressure generated by tip vortex through injecting compressed air into an end portion of the propeller and to improve life span of the propeller. CONSTITUTION: A propeller having a nozzle for injecting air comprises an injecting nozzle unit(20) having an anti-singing edge shape by being mounted on a tip portion of a propeller(10); a supply unit(30) connected to a lower end portion of the injecting nozzle unit; a hole mounted in the middle of the supply unit for transferring compressed air; a propeller shaft(40) connected to the supply unit; a transferring pipe(50) mounted in the propeller shaft; a compressor(60) generating the compressed air by being mounted on an engine room; a connecting pipe(70) engaged with the transferring pipe and the compressor of the engine room; a bearing mounted on a connection portion between the connecting pipe and the transferring pipe; and a check valve preventing sea water from letting.