ACTIVE HYDROFOIL Russian patent published in 2001 - IPC

Abstract RU 2176609 C2

FIELD: shipbuilding; manufacture of active hydrofoils provided with water-jet propellers. SUBSTANCE: hydrofoil is streamlined body having upper suction surface in form of slotted nozzles. Hydraulic supercharger is arranged inside hydrofoil body. Outlet water passage of supercharger terminates in nozzle of water-jet propeller. Water passage of hydraulic supercharger is provided with branches. Slotted nozzles designed for control of boundary layer are hydraulically connected with branches of water passage of hydraulic supercharger. Guide of slotted nozzles are rotatable around horizontal axes. Sections of slotted nozzle shears may be made varying along hydrofoil span. EFFECT: reduced power requirements at increased lift force and retained high hydrodynamic property in wide range of ship's motion characteristics equipment with such hydrofoil. 3 cl, 13 dwg

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RU 2 176 609 C2

Authors

Bojtsov E.N.

Dates

2001-12-10Published

1999-06-21Filed