An anti-bubble ax-shaped bow and scientific research ship

Abstract

The invention provides an anti-bubble axe-like head and a scientific research ship. The axe-like head is positioned at the bottom of a bow; a junction between the axe-like head and the bow is a concave part; a water line is intersected with the axe-like head due to the position of the axe-like head on the ship; the length of the axe-like head is not more than 8% of the length between perpendiculars of the ship; in side view, the axe-like head is a sheet body, the upper contour and the lower contour of the axe-like head are rounded, and the thickness of the axe-like head is gradually increased from the bow to the rear part of the ship; in the view of transverse section, a raised part of the axe-like head is slowly transitional from top to bottom, the largest width of the transverse section of the axe-like head does not exceed 20% of the maximum water line width, and the half entrance angle of the water line part is not more than 20 DEG. According to the invention, on the one hand, bubbles are furthest reduced and the flowing tendency of the bubbles along a ship body is improved so that influences of the bubbles on acoustic equipment embedded in the bottom of the ship are avoided; and on the other hand, the running resistance of the ship is reduced, the economic efficiency of the ship is enhanced, and both working performances of the acoustic equipment at the bottom of the ship and the resistance performance of the ship are preferably taken into consideration.

Description

technical field [0001] The invention relates to the field of shipbuilding, in particular to an anti-bubble ax-shaped bow and a scientific research ship using the ax-shaped bow. Background technique [0002] As the world pays more and more attention to marine resources, various ocean powers are competing to build a large number of scientific research ships for ocean exploration. For scientific research ships, whether the acoustic detection equipment installed on the bottom of the ship can operate effectively is the key to the success or failure of the ship design. Since the acoustic equipment at the bottom of the ship uses acoustic principles to detect the reflected waves of the ocean and the seabed, the air bubbles moving with the hull boundary layer will have a great impact on the detection effect when they flow through the acoustic detection area, causing the clarity of the collected information to decrease or even completely failure and other adverse consequences. [00...

AI Technical Summary

Problems solved by technology

But through practice, it is found that although the ball nose can reduce the resistance, it will bring a large number of air bubbles generated by the water surface into the bottom of the ship, especially when the ball nose slaps the water surface during pitching, a large number of air bubbles will be generated, which will seriously affect the normal operation of the acoustic equipment on the ship bottom. Work

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