JPH04119293U - small high speed boat - Google Patents

Abstract

(57) [Summary] [Purpose] Increase speed and improve rudder effectiveness by effectively using the energy of water flow as propulsive force. [Structure] A stern rectifying plate 7 having an arc shape is attached to the boundary between the stern 2 and the lower stern curved portion 3 so as to be smoothly continuous with the lower stern curved portion 3.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a small high-speed boat.

0002

[Conventional technology]

As shown in FIG. A lower curved portion 3 is formed, and a propeller 4 is disposed in the lower curved portion 3 of the stern. The water flow 5 generated by the stern 4 is guided rearward by the stern lower curved part 3, and 1 is now being promoted.

0003 In addition, 6 in the figure is a rudder.

0004

[Problem that the idea aims to solve]

However, the above-mentioned conventional small high-speed boat has the following problems.

[0005] In other words, since the size of the lower stern curved portion 3 is restricted by law, the propeller The water flow 5 generated by the stern 4 is sufficiently suppressed by the stern lower curved part 3. Therefore, most of the water flow 5 is directed in the direction of arrow a and becomes wave spray. Since it escapes onto the water surface, effectively use the energy of water flow 5 as a propulsion force. As a result, I was unable to increase my speed.

[0006] Also, since most of the water flow 5 turns into wave spray and escapes onto the water surface, the rudder 6 should not be turned sharply. The effectiveness of rudder 6 was not very good.

[0007] In view of the above-mentioned circumstances, this invention is designed to effectively use the energy of water flow as a propulsion force. By making it possible to increase the speed and improve the effectiveness of the rudder. The purpose of this project is to provide small, high-speed boats with high speeds.

[0008]

[Means to solve the problem]

This invention installs an arc-shaped stern current plate at the boundary between the stern and the lower curved part of the stern. A small high-speed vehicle characterized by a protrusion that extends smoothly into the curved part of the lower tail. It depends on the ship.

[0009]

[Effect]

According to the present invention, at the boundary between the stern and the lower stern curved part, The water flow is suppressed below the water surface by the protruding stern rectifying plate that continues smoothly. The energy of the water flow is effectively used as propulsive force, increasing speed and increasing the effectiveness of the rudder. Improved performance.

0010

【Example】

Embodiments of the present invention will be described below with reference to the drawings.

[0011] 1 and 2 show an embodiment of the present invention.

0012 In addition, in the figure, the same reference numerals are given to the same parts as those shown in Figure 3. Therefore, the explanation will be omitted, and only the configuration unique to this invention will be explained below. Ku.

[0013] At the boundary position between the stern 2 and the lower stern curved part 3, the diameter of the propeller 4 is approximately 630 mm. It has an arc shape with a curvature of approximately 1.5 times 945 mm and a length of 200 mm. A stern rectifying plate 7 is provided so as to protrude smoothly and continuously from the stern lower curved part 3.

[0014] Next, the operation will be explained.

[0015] A stern current plate 7 is installed at the boundary between the stern 2 and the stern lower curved portion 3. The water flow generated by the propeller 4 is 5 is directed in the direction of arrow b and is kept almost out of the water by the stern baffle plate 7. can be suppressed to

[0016] As a result, the energy of the water flow 5 can be effectively used as propulsive force, The speed increases accordingly.

[0017] In addition, since most of the water flow 5 exists underwater, the water flow 5 is effectively transmitted to the rudder 6, and the rudder 6 The effectiveness of the rudder 6 when turning is improved.

[0018] Note that the present invention is not limited to the above-mentioned embodiment, and the stern current plate may be long. be as effective as possible, and that various other modifications be made within the scope of the gist of the present invention. Of course, modifications can be made.

[0019]

[Effect of the idea]

As explained above, according to the small high-speed boat of the present invention, the energy of water flow is used for propulsion. Since it can be used effectively as force, it can increase speed and improve the effectiveness of the rudder. It has the excellent effect of being able to increase the

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is a rear view of FIG. 1;

FIG. 3 is a side view of a conventional example.

[Explanation of symbols]

2 Stern 3 Lower stern curved section 7 Stern current plate

Claims (1)

[Scope of utility model registration request] 1. A small high-speed boat, characterized in that an arcuate stern rectifying plate is provided at the boundary between the stern and the lower stern curved portion so as to protrude smoothly and continuously from the stern lower curved portion.