FIELD: shipbuilding. SUBSTANCE: propeller has hub with swivel blades on whose roots protectors are fitted. Protectors are made in form of caps or rings brought in electric contact with hub by means of flexible conducting busbar. Protectors are made of material whose electrode potential in sea water is less than potential of material of propeller blades by no less than 300 mV. EFFECT: enhanced durability of propeller. 4 cl, 6 dwg
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|---|---|---|---|
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