Skimming boat

Abstract

The invention discloses a skimming boat. The skimming boat comprises a boat body, wherein a plurality of steps are disposed at the bottom of the boat body at intervals along the length direction of the boat body, and each step has a first end part close to a boat bow and a second end part close to a boat stern; for any adjacent two of the steps, the height of the second end part, close to one side of the boat bow, of each step is bigger than that of the first end part, close to one side of the boat stern, of each step. Due to the disposition of the steps at the bottom of the boat body at intervals, as the skimming boat is sliding, a cavity can be formed behind one step by water when water is flowing through the step, and water forms a sliding surface close to the second end part of the step, and would contact with the next step after a certain distance, and so on; the cavity can reduce the sliding resistance of the skimming boat to some extent, each sliding surface has a small length, i.e. a bigger span-chord ratio, and therefore the sliding resistance of the skimming boat is reduced while the sliding speed and the acceleration rate of the skimming boat are improved.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a planing boat. Background technique [0002] The conventional monohull planing boats are all slender and long planing boats. There are many factors that affect the speed of a planing boat, such as the size of the boat, the propulsion system, the navigation environment, etc., and it is a very complicated process to achieve the best cooperation with the boat's propellers, and the contradiction is more prominent for high-speed planing boats. Since the environmental factors cannot be changed, the design of the propulsion system is limited by the existing equipment, and a slight change in the ship type can achieve a multiplier effect with half the effort. The longitudinal position of the center of gravity of the existing monolithic planing boat does not match the hydrodynamic center, the longitudinal stability is poor, and the space for increasing the speed of the planing speed is lim...

AI Technical Summary

Problems solved by technology

The longitudinal position of the center of gravity of the existing monocoque planing boats does not match the hydrodynamic center, the longitudinal stability is poor, and the space for increasing the taxiing speed is limited, which cannot meet the higher and higher speed requirements; and the length of the bottom of the boat is too long , so that the potential of reducing sliding resistance has not been fully realized

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