SHIP'S WAVE PROPELLER Russian patent published in 1995 - IPC

FIELD: marine propellers. SUBSTANCE: wave propeller has unbalanced swivel hydrofoil secured on spindle. Secured on spindle 2 is lever 3 whose opposite end is articulated to rod of piston of pressure hydraulic cylinder 4 of the control unit. Besides that, control unit has control hydraulic cylinders 11, 12 and 13 which are connected to one another and to pressure hydraulic cylinder by means of pipe lines 7 provided with valves 8,9 10 and 21. Mounted inside each control cylinder along its axis is guide 14 on which piston 15 and stack of disks 17 are movably fitted. Disks 17 have perforation between which springs 19 are mounted; stops 18 limiting travel of disks 17 are secured on inner wall. EFFECT: enhanced reliability. 2 dwg