PROPULSION COMPLEX OF DOUBLE-SHAFT SHIP Russian patent published in 1997 - IPC

FIELD: shipbuilding; propellers of multi-shaft vessels. SUBSTANCE: propulsion complex includes propellers fitted on shafts in common nozzle for synchronous rotation in opposite directions at passage of each blade between blades of other propeller. Axes of output portions of shafts are located at distance which is lesser than propeller radius. This is achieved due to blade rake through angle of 12-30 deg or by setting the axes of shafts at the same angle or by setting the shafts at angle of 6-15 deg at simultaneous blade rake through an angle within the same limits. EFFECT: enhanced efficiency and compactness of propeller. 4 cl, 4 dwg