FIELD: transportation.
SUBSTANCE: said utility invention relates to the ship building industry, in particular to designs of double-stage marine blade propeller systems. A blade propeller system comprising a propeller and a counterpropeller coaxially installed behind it, which has variable pitch blades, a mechanism for the rotation of the latter about the vertical axis, and a counterpropeller hub stopping mechanism. Each of the counterpropeller blades is curvilinear and curved in such a manner that its suction or pressure surface at the blade end portion faces the outer surface of the counterpropeller hub.
EFFECT: enhanced multifunctional blade propeller system performance, particularly decreased counterpropeller vibration level in reactive mode of operation, elimination of blade erosion damage, and enhanced hydrodynamic efficiency when counterpropeller operates in reactive mode.
3 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MOTION AND MANEUVERING OF SHIP AND BLADED PROPULSION COMPLEX | 1994 |
|
RU2098316C1 |
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| SIMULATION OF SHIP TWO-STAGE BLADE PROPULSOR IN MODEL BASIN | 2014 |
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| SHIPBOARD PROPULSION ENGINE PLANT, TYPE SWINGING PROPELLER | 1996 |
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| MARINE PROPULSION PLANT OF "STEERING NOZZLE" TYPE | 2003 |
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| SCREW PROPULSOR | 2000 |
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| MARINE PROPULSION COMPLEX | 1995 |
|
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| SHIP PROPULSOR | 2009 |
|
RU2438917C2 |
