Pre-swivel triangular guide for right-handed single oar boats
A triangular and conduit technology, applied in the direction of rotating propellers, rotary propellers, etc., can solve the problems of uneven wake and low propulsion efficiency of the propeller, reduce the wet surface area, facilitate processing and positioning, and have a good pre-rotation effect Effect
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[0024] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0025] According to the characteristics of hull follow current calculated by CFD or measured by ship model test and the direction of propeller rotation, a pre-swirl triangular duct with completely asymmetric arrangement in front of the propeller installed at the stern of a medium-low speed ship is invented to improve the propulsion efficiency and evenly accompany the propeller. flow, reducing the risk of hull vibration.
[0026] Such as figure 1 , figure 2 The shown one is used for the pre-swirl triangular duct of a right-handed single-screw boat, which is arranged between the propeller 20 at the stern and the hull 21, and is characterized in that:
[0027] The pre-swirling triangular duct of the present invention is fan-shaped. Seen from the rear side of the propeller 20, the stern on the left side of the longitudinal cent...
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