AIR-EMITTING SYSTEM FOR REDUCING CAVITATION

摘要

An air-discharging system for reducing cavitation is provided to reduce sound characteristics of a propeller by differentially discharging an air or gas depending on a minimum pressure difference due to different vertical positions of propeller blades. An air-discharging system for reducing cavitation includes a shaft(4), and a propeller(1). The shaft includes air passages(5,5a,5b). The propeller includes blades, holes(3), and an air orifice(2). The shaft is connected to an air distributor(7) through an adaptor(6). The air distributor includes a low pressure window(9) connected to an air inlet(8) with a pressure(P1), and a high pressure window(10) connected to an air inlet(11) with a pressure(P2). In addition, the shaft is connected to the air distributor with a power transmission apparatus(12).