Straight wall constant wetted length slideway type round bilge speed boat shape

Abstract

The invention discloses a straight wall constant wetted length slideway type round bilge speed boat shape which is characterized in that a boat body comprises two straight wall constant wetted length round bilge lateral bodies in left-right symmetry, slideway tops and slideways, the straight wall constant wetted length round bilge lateral bodies are formed by straight wall contour lines, slideway contour lines, stern cross section lines, stern bottom oblique ascensions, midship cross section lines and midship bottom oblique ascensions. The straight wall constant wetted length slideway type round bilge speed boat shape has the advantages that the wetted length is constant, during sailing, waves and flying foams on the outer side of the boat body are reduced greatly, the waves, flying foams and air flows on the inner side of the boat body flow through the slideways and flow out towards the rear of the boat at high speed, parts of the energy of the waves and flying foams on the inner side of the boat body are recycled by the slideways (equals to wave and foam elimination) and converted into the dynamic lifting force of the boat body along with the air flows, the operability, navigability and seakeeping performance of the boat shape are increased greatly, and the boat shape is applicable to sea conditions 1-2 levels higher than those which traditional speed boats are applicable to. In addition, due to the fact that the wetted length of the boat shape is constant, the performance of the boat shape can be favorably and theoretically analyzed and researched by using length Froude number.

Description

technical field

[0001] The invention relates to a catamaran planing boat type with sharp bilge, in particular to a military and civil catamaran planing boat type suitable for normal navigation under relatively high sea conditions with a Froude number greater than 1.0 in length, and belongs to ship type technology field. Background technique

[0002] The bilge 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 sharp bilge planing boat has greater wave-making resistance and smaller spray resistance when taxiing at low speed, the sum of these two resistances accounts for more than 70% of the total resistance, and the proportion of wave-making resistance decreases with the increase of taxiing speed However, the proportion of droplet resistance increases, and the sum of these ...

Examples

Embodiment Construction

[0022] The present invention and design method will be further described below in conjunction with accompanying drawings and specific embodiments.

[0023] figure 1 Among them, taking the point o as the origin, draw a horizontal line segment ox whose length is equal to the design waterline length L of the hull toward the bow direction, and the line segment ox is the design waterline 12 of the hull;

[0024] figure 1 Among them, with point o as the center, the length L of the design waterline 12 of the hull is the radius R, and an arc K10K11 is drawn to obtain the bow column line 131; the lower endpoint of the arc K10 is below the design waterline 12 of the hull, and the distance from The distance of the design waterline 12 a=L / (9~11); the upper end point K11 of the arc is above the design waterline 12 of the hull, and the distance b=(0.2~0.5)a from the design waterline of the hull; K10 draws a horizontal straight line toward the stern of the boat, and points K9 are taken on th...

technical field

[0001] The invention relates to a catamaran planing boat type with sharp bilge, in particular to a military and civil catamaran planing boat type suitable for normal navigation under relatively high sea conditions with a Froude number greater than 1.0 in length, and belongs to ship type technology field. Background technique

[0002] The bilge 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 sharp bilge planing boat has greater wave-making resistance and smaller spray resistance when taxiing at low speed, the sum of these two resistances accounts for more than 70% of the total resistance, and the proportion of wave-making resistance decreases with the increase of taxiing speed However, the proportion of droplet resistance increases, and the sum of these ...

Examples

Embodiment Construction

[0022] The present invention and design method will be further described below in conjunction with accompanying drawings and specific embodiments.

[0023] figure 1 Among them, taking the point o as the origin, draw a horizontal line segment ox whose length is equal to the design waterline length L of the hull toward the bow direction, and the line segment ox is the design waterline 12 of the hull;

[0024] figure 1 Among them, with point o as the center, the length L of the design waterline 12 of the hull is the radius R, and an arc K10K11 is drawn to obtain the bow column line 131; the lower endpoint of the arc K10 is below the design waterline 12 of the hull, and the distance from The distance of the design waterline 12 a=L / (9~11); the upper end point K11 of the arc is above the design waterline 12 of the hull, and the distance b=(0.2~0.5)a from the design waterline of the hull; K10 draws a horizontal straight line toward the stern of the boat, and points K9 are taken on th...

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