Bilge planing craft with constant wet length

Abstract

The invention discloses a sharp-bilge planing boat type with constant wetted length. A boat body curved surface is a fairing space closed curved surface formed in a controlling mode with a designed water line, a midship longitudinal section line, an angle folding line, an upper boundary line, a stern transverse section line, a midship section line, a folding angle line longitudinal inclined angle, a stern inclined rising angle and a midship inclined rising angle as characteristics. The sharp-bilge planing boat type has the advantages that the wetted length is constant and unchanged no matter how the ship state changes at various kinds of ship speed; the resistance performance is greatly reduced than that of a traditional planing boat when sailing in states of water draining, transiting and taking off; the resistance performance is close to that of the traditional planing boat when sailing in a planing state; maneuverability, seaworthiness and seakeeping are greatly improved. The sharp-bilge planning boat type can be used in sea conditions 1-2 grades higher than the traditional planing boat. Further, due to the fact that the wetted length remains unchanged, the sharp-bilge planning boat type is more favorable for people to utilize the length Froude number to analyze and study the performance of the sharp-bilge planning boat type theoretically.

Description

technical field

[0001] The invention relates to a planing boat type, in particular to various types of planing boats capable of normal navigation under relatively high sea conditions, and belongs to the technical field of ship types. Background technique

[0002] A planing boat is a small boat that slides at high speed on the water surface. It is widely used in military and civilian fields, such as torpedo boats, missile speedboats, high-speed traffic boats, high-speed luxury yachts, high-speed racing boats, etc. The shape line design of a planing boat is related to various performance indicators of the planing boat. A slight difference in the shape line may sometimes cause a great difference in performance. Whether the shape design is good or not is directly related to its sailing performance. Normal sailing, so how to design an excellent planing boat has become one of the most important topics for shipbuilders to study. When the traditional single-body planing boat with s...

Examples

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] figure 1 Among them, take the hull design waterline stern endpoint o as the origin, draw a horizontal line segment OX whose length is equal to the hull design waterline length L to the bow direction, and the line segment OX is the hull design waterline 12 of the present invention ;

[0018] exist figure 1 and image 3 , taking the stern endpoint o of the hull design waterline as the center, and the length L of the hull design waterline 12 as the radius R, an arc K6K7 is drawn to obtain the lower bow column line 132, and the lower endpoint K6 of the arc is at the hull design waterline 12 , the distance a=L / (9~11) from the hull design waterline 12, the upper end point K7 of the arc is above the hull design waterline 12, and the distance from the hull design waterline 12 b=(0.2 ~0.5) a; take point K8 in the direction of the bow above po...

technical field

[0001] The invention relates to a planing boat type, in particular to various types of planing boats capable of normal navigation under relatively high sea conditions, and belongs to the technical field of ship types. Background technique

[0002] A planing boat is a small boat that slides at high speed on the water surface. It is widely used in military and civilian fields, such as torpedo boats, missile speedboats, high-speed traffic boats, high-speed luxury yachts, high-speed racing boats, etc. The shape line design of a planing boat is related to various performance indicators of the planing boat. A slight difference in the shape line may sometimes cause a great difference in performance. Whether the shape design is good or not is directly related to its sailing performance. Normal sailing, so how to design an excellent planing boat has become one of the most important topics for shipbuilders to study. When the traditional single-body planing boat with s...

Examples

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] figure 1 Among them, take the hull design waterline stern endpoint o as the origin, draw a horizontal line segment OX whose length is equal to the hull design waterline length L to the bow direction, and the line segment OX is the hull design waterline 12 of the present invention ;

[0018] exist figure 1 and image 3 , taking the stern endpoint o of the hull design waterline as the center, and the length L of the hull design waterline 12 as the radius R, an arc K6K7 is drawn to obtain the lower bow column line 132, and the lower endpoint K6 of the arc is at the hull design waterline 12 , the distance a=L / (9~11) from the hull design waterline 12, the upper end point K7 of the arc is above the hull design waterline 12, and the distance from the hull design waterline 12 b=(0.2 ~0.5) a; take point K8 in the direction of the bow above po...

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