System for reducing blade tip vortex cavitation by controlling mass flow
AssigneeMoth Co., Ltd.
InventorsJae Hyung Lee, Yeong Ju Go
Life of this patent
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Abstract
Disclosed is a system for reducing blade tip vortex cavitation by controlling mass flow. The system reduces blade tip vortex cavitation that occurs around blades of a propulsive propeller of a ship when the propulsive propeller rotates to generate force required to propel the ship across the sea by forming a plurality of flow holes in the propeller blades and controlling mass flow through the plurality of flow holes, i.e., appropriately discharging water to the outside or suctioning outside water through the plurality of flow holes, thereby reducing underwater noise and vibration of the hull. The system includes a propeller, a water feeding pipe, a water supply/suction unit, and a controller.
Claims10
A system for reducing blade tip vortex cavitation by controlling mass flow, the system comprising:
- a propeller configured to discharge water to an outside or suction outside water in order to reduce blade tip vortex cavitation occurring due to rotation thereof;
- a plurality of water feeding pipes mounted in a propeller driving shaft so as to match corresponding ones of blades of the propeller in order to feed water to be discharged to the propeller or feed water suctioned through the propeller to a plurality of water supply/suction units;
- the plurality of water supply/suction units mounted in a hull so as to match the corresponding ones of the blades of the propeller in order to supply water to be discharged to the propeller or suction water through the propeller under control of a controller;
- and
- the controller configured to control the plurality of water supply/suction units so that discharge and suction of water through the propeller are implemented,
- wherein the plurality of water feeding pipes and the plurality of water supply/suction units are provided as the same number as the blades of the propeller.
Dependencies are inferred from the claim text.