| 摘要 |
FIELD: propellers for surface and underwater ships; passenger ships, warships, boats, yachts, submarines. ^ SUBSTANCE: proposed propeller has blades of axisymmetric shape and flat profile which are mounted on hub; each blade is provided with end ridge. Each end ridge is connected with respective blade for change of fixed angle between its working surface and working surface of this blade from 180° to 0°. Such construction of propeller ensures obtaining additional pulse of thrust or braking with no increase in consumed power. ^ EFFECT: enhanced efficiency. ^ 3 cl, 4 dwg |
