WATER-JET PROPELLER

摘要

FIELD: transport. ^ SUBSTANCE: invention relates to ship building. Proposed propelled comprises vane wheel rotor 2 with vaned hub 3 fitted on the shaft in water duct 1. Cavity 5 is made in rotor vane body peripheral section to extend over vane width. Said cavity communicates with incident flow via inlet channels 7 with water intake holes 8 made in vane body. Said holes are made in vane pressure surface 6. Said cavity has gap nozzle 9 extending over vane width and arranged on vane peripheral section to be oriented towards said pressure surface. Note here that said water intake channels are arranged over vane width at vane relative radius equal to 0.55-0.8 of propeller axle. Inlet sections of vane water intake holes are oriented along propeller rotation. ^ EFFECT: reduced cavitation in slot clearance between vanes and water duct wall. ^ 2 cl, 4 dwg