Large-fault-terrace high-speed planing boat type

Abstract

The invention discloses a large-fault-terrace high-speed planing boat type. The boat bottom of a planing boat comprises a front hull section and a rear hull section; the front hull section is in an arc shape; the two ends of the rear hull section are the same in height and are located at the lowest point of the bottom of the planing boat; the upper portion of the rear hull section comprises a horizontal hull section close to the front hull section; the fault-terrace-type height difference HD exists at the junction of the horizontal hull section and the front hull section, the length of the horizontal hull section is L1, and HD / L1 is equal to 2-4; the rear hull section is straight, and the included angle between the rear hull section and the horizontal plane is alpha 1, and alpha 1 is equalto 4-6 degrees; the boat width of the planing boat is K, and K / HD is equal to 6-8; and the draft of the planing boat is T, and T / HD is equal to 0.7-0.9. Large fault terraces and anti-slip strips aresimultaneously applied to the planing boat type design innovatively, under the condition that the incoming flow speed remains unchanged, a rear hull body provides larger lift, meanwhile, the space atthe tail of a hull can further be effectively enlarged, and cabin layout is facilitated.

Description

technical field [0001] The invention relates to the technical field of ship types, in particular to a large-step high-speed planing boat type. Background technique [0002] As a speedboat sailing at high speed on the water surface, the planing boat makes full use of the dynamic lift of the fluid during the gliding process to lift the hull and reduce the contact area between the hull and the water, thereby achieving the effect of reducing resistance. The speed of a conventional planing boat can reach 40 ~50 knots. There are many types of planing boats, including single-body round bilge type, pointed bilge type, and double-body channel type, etc. Although its speed is higher than that of general displacement ships, its seaworthiness is poor. Whether it is a deep V-shaped planing boat or a channel-type planing boat, or a planing boat with a stepped form, usually in the process of their take-off , when the volume Fourier number Fr ▽ In the range of 1 to 3, resistance peaks ar...

AI Technical Summary

Problems solved by technology

Although its speed is higher than that of general displacement ships, its seaworthiness is poor. Whether it is a deep V-shaped planing boat or a channel-type planing boat, or a planing boat with a stepped form, usually in the process of their take-off , when the volume Fourier number Fr ▽ In the range of 1 to 3, resistance peaks are likely to appear. At the same time, within this speed range, the attitude of the planing boat changes drastically, and the maximum trim angle even exceeds 10°, which seriously affects the sailing performance of the planing boat. Generally, it is accompanied by an excessive resistance peak, which brings difficulties to the normal start-up of the planing boat, and also poses certain safety hazards.

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