Hydrofoil craft having hydroplane function

Abstract

The invention discloses a hydrofoil ship with a displacement boat function, which comprises a main hull, a propulsion device and a stern rudder, wherein a deep-wetted hydrofoil and a movable sliding hydrofoil which can achieve lift adjustment are arranged at the bottom of the main hull, the deep-wetted hydrofoil is arranged at the rear portion of the gravity of the main hull while the movable sliding hydrofoil is arranged on the head portion of the main hull, and the distance between the deep-wetted hydrofoil and the main hull is longer than that between the movable sliding hydrofoil and the main hull. The hydrofoil ship has the advantages of fast route speed, sound dynamic stability, high safety, energy-saving and low production cost.

Description

technical field [0001] The invention relates to the field of shipbuilding, in particular to a hydrofoil with the function of a planing boat. Background technique [0002] Among existing ships, planing boats and hydrofoils are similar to the present invention. [0003] The manufacturing cost of the planing boat is low. When it travels at high speed, the bow rises, and about one third of the tail is immersed in the water. It relies on the relative impulse between the bottom of the boat and the water surface to hold up the boat. Due to the small contact surface between the bottom of the boat and the water surface, reducing It reduces the frictional resistance between the water and the hull, so it can reach a higher speed. The defects are: 1. The higher the speed of the planing boat, the higher the bow, and the more dangerous the driver is. 2. The wave-making resistance is large, and the large waves have an impact on the waterway. 3. There are restrictions on the captain, shi...

AI Technical Summary

Problems solved by technology

Its defect has: 1, the higher the speed of the planing boat, the higher its bow, the more dangerous the driver

2. The wave-making resistance is large, and the large waves will have an impact on the channel

3. There are restrictions on the length, breadth and draft of the ship, so it can only be used as a small boat and not as a big ship.

4. I am afraid of wind and waves, and may capsize in big waves

5. High fuel consumption

Its defects are as follows: 1. Once an accident occurs to the hydrofoil deeply immersed in the water, such as when water plants, fishing nets and other sundries are hung on the hydrofoil, it is easy to cause the hydrofoil to fail and cannot provide enough lift to make the hull fall and contact the water surface. The frictional resistance and wave-making resistance on the hull suddenly increase, causing the hull to stall rapidly, and its acceleration is greater than that of a car's sudden brake, which is quite dangerous

2. The hydrofoil remains in the water all the time, and the contact area with the water remains unchanged. When the speed of the ship is stable, the lift provided by the hydrofoil can only be changed by changing its angle of attack. The load is constantly changing. In order to maintain the stability of the ship while driving, the existing deep-immersed hydrofoil boats adjust the angle of attack of the hydrofoils in real time through the automatic balance control system, and change the lift provided by the hydrofoils to maintain the stability of the ship. The stability of the ship, the automatic balance control system is similar to the balance system used on the aircraft, developed by the Boeing Company of the United States, so the cost of this ship type is expensive, generally only used for military

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