AUXILIARY HYDROJET DEVICE FOR SUBMERSIBLE CRAFTS Russian patent published in 2010 - IPC B63G8/14 F03B13/14 B63H1/02 

FIELD: power engineering.

SUBSTANCE: auxiliary hydrojet device for submersible crafts comprises at least two water conduits arranged symmetrically on lateral sides relative to longitudinal axis of submersible craft. Each water conduit is arranged in the form of nozzles that narrow along with flow direction with output openings arranged inside water conduit and faced outside with inlet water intake openings. Vertical walls of water conduit are formed by flat plates. In each water conduit in vertical plane there are upper and lower rows of nozzles arranged as symmetrically relative to longitudinal axis of water conduit with formation of central water-speeding chamber inside water conduit communicated from the side of inlet to central nozzle arranged in front part of water conduit and output opening from the side of back part of water conduit. Nozzles are formed by curvilinear walls arranged between vertical walls of water conduit as horizontal in cross section of nozzles to form rectangular cross section of nozzles. Horizontal curvilinear walls of nozzles are made of plates with smoothly bent section convex relative to longitudinal axis of submersible craft arranged on the side of input water intake opening. Between smoothly bent sections of adjacent horizontal curvilinear walls at the inlet to nozzles there are plates installed as bent in longitudinal direction and concave relative to longitudinal axis of submersible craft to guide flow and horizontal in cross section.

EFFECT: improved efficiency of water flow energy application in process of submersible craft motion in it.

2 cl, 4 dwg