FIELD: shipbuilding; fin propellers. SUBSTANCE: propeller is provided with working member made in form of movable wedge-shaped taper fin with flexible reinforced plate at sharp end; as a rule, it has form of tuna fin. Thickness of wedge ranges from 1:2 to 1:6 of its length. Blunt end of fin is articulated to ship's hull. Ship may be provided with two propellers operating in counter phase. EFFECT: enhanced efficiency and avoidance of adverse effect on environment. 2 cl, 2 dwg
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|
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| PROPULSION PLANT | 0 |
|
SU1481141A1 |
