a low drag boat

Abstract

The invention discloses a ship with low water resistance. The ship comprises a ship body and a speed increase cabin positioned below the ship bottom, wherein a horizontal choke section, a contracting section, a water feeding section, an arched section and a draining section which are connected end to end are sequentially arranged on the ship bottom from front to back; an opening at the rear end of the speed increase cabin is a water outlet which is positioned at the tail of the ship body; an opening at the front end of the speed increase cabin is a water inlet; the upper end of the water inlet on the wall of the speed increase cabin is positioned in the middle of the horizontal choke section; the bottom surfaces of the ship in the horizontal choke section, the water feeding section and the draining section are parallel one another; the arched section is upwards arched; two impellers which are positioned at the same horizontal position and arranged in parallel are arranged in the arched section; and the two impellers are in respectively driving connection with a motor. The speed increase cabin is sequentially thinned from front to back, can be used for supplying water to the impellers more sufficiently and has high water flowing speed and more remarkable effects for forward absorption and backward push. In addition, the arched section on which the impellers are mounted are arranged, thus the work areas of the impellers are far greater than the section area of a cavity below the draining section. Therefore, the ship disclosed by the invention has higher driving speed.

Description

technical field [0001] The invention relates to a ship with low water resistance, and the ship includes large, medium and small ships, submarines, ships and aircraft carriers. Background technique [0002] The current boats are very slow, and the concept of high horsepower and low speed has been adopted. The ensuing problem is that the speed of the ship cannot be increased simply by increasing the propeller speed. There are two reasons for this phenomenon. One is that the resistance of water is greater, and the deeper the draft, the greater the resistance; the other is air intake, because the ship is driving between water and air, and the natural flow rate of water is at a certain depth. There is a certain limit. When the speed of the propeller exceeds a certain limit, there will be no water for the propeller, and the water will be cut off. At this time, the air will be added, which is the so-called air intake. The water in the air intake is white, and the white color is th...

AI Technical Summary

Problems solved by technology

In order to reduce the contact area and resistance between the ship and the water, the shape of the bottom of the ship is warped forward based on the horizontal plane. When the ship is running, the bottom surface of the front end of the ship is away from the water surface. If it is pumped into the speed-increasing tube, it is easy to have the above-mentioned air intake problem, which will affect the further improvement of the ship's speed

On the other hand, the water inlet diameter at the front end of the speed-increasing pipe is similar to the water outlet diameter at the rear end. When the impeller drains water at high speed, the water supply is limited, which ultimately affects the drainage speed, and the speed-up effect is not ideal.

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