JPS61200080A - Full submergence type hydrofoil boat - Google Patents

Abstract

PURPOSE:To improve rolling stability at turning by providing flaps at the submerged portion of struts mounted with the hydrofoils at the front and rear of the hull and concurrently and freely operating the front and rear flaps in the same direction or in the reverse direction, so as to generate rolling and turning moments independently. CONSTITUTION:Struts 2 and 3 are protruded at the front and rear of the center of gravity of a hull and full submergence type hydrofoils 4 and 5 are provided on their tips respectively. Flaps 6 and 7 are provided at the submerged portion of the respective struts 2 and 3 and are concurrently and freely operated around each of shafts 22 and 32 in the same direction or in the reverse direction. Only rolling moment is generated by turning the front and rear flaps in the same direction by the same angle and only turning moment is generated by turning the flaps in the reverse direction by the same angle. Each moment can properly be adjusted by independently operating both flaps. As a result, a boat can be kept in a stable state even at sudden turning.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fully immersive hydrofoil boat with excellent maneuverability.

(Prior Art) Conventionally, fully immersed hydrofoils have been known that have front and rear fully immersed hydrofoils having struts projecting downward from the bottom of the ship and fully immersed hydrofoils attached to the tips of the struts. This hydrofoil boat has struts that penetrate the water surface and the hydrofoils are completely submerged, making it less susceptible to the effects of waves and providing a comfortable ride, but this alone does not provide resilience. Furthermore, when the ship turns, if the ship is upright, centrifugal force will act and a tilting moment will be generated, so it is necessary to provide an inward tilt corresponding to the centrifugal force.

A conventional hydrofoil boat has at least a pair of left and right ailerons on the hydrofoil, which generate a heeling moment. That is, by raising one of the hydrofoils and lowering the other by means of the left and right ailerons, the hull on the water surface is moved toward the turning center, and thereby the hull is steered to incline within a predetermined angle. Since the ship is tilted by moving the center of gravity of the ship, its operation is slow, making it impossible to make sharp turns, resulting in poor maneuverability.

(Purpose of the Invention) This invention was made in order to eliminate such conventional drawbacks, and by moving the hydrofoils laterally, the movement of the center of the hull is reduced, and the hull can be quickly brought to a predetermined position. The purpose of the present invention is to provide an underwater Q-ship that can tilt and tilt, thereby improving maneuverability.

(Structure of the Invention) The present invention provides a hydrofoil boat having at least one strut on the front side and one rear side of the center of gravity of the hull, and a fully submerged submerged portion of the tip of the strut, the underwater portion of the front strut. It has flaps provided on each side and operating means for operating the flaps, and the operating means is configured to operate the front and rear flaps simultaneously in the same direction or in opposite directions. In this way, the hydrofoil itself is laterally moved by the flaps of the struts to cause the hydrofoil to tilt laterally, thereby rapidly tilting to a predetermined angle during a turn.

(Example) In FIGS. 1 and 2, a pair (two) of struts 2.3 are provided at the bottom of the hull 1, projecting downward from the front and rear, and the tips of the struts 2, 3 are Underwater 14.5 is attached to each. Above strut 2.
3 has a flap 6.7 attached to its underwater portion, and this flap 6.7 is configured to pivot from side to side around a vertical axis 22.32 as shown by phantom lines in FIG. 2 by operating means not shown. There is.

The forward angle of attack of the front hydrofoil 4 can be changed, and the height of the hull above the water surface is measured while cruising using ultrasonic waves emitted from the lower part of the bow to the water surface, and the height of the hull above the water surface is determined according to the measured value.
By changing the angle of attack of 4, the ship floats or sinks, thereby maintaining the ship at a constant height above the water surface and cruising along. In addition, the configuration of this point,
Since the operation may be performed using known means, detailed explanation will be omitted. Further, although the propulsion device is not shown, any known means such as propeller propulsion or jet propulsion may be used.

The configuration of the flap can be modified in various ways, for example, the third
It may be configured as shown in the figure. i.e. strut 2
0.30 is formed in a cylindrical shape, and the flaps 60.70 are formed in a streamlined shape and are attached to enclose the struts 20.30, and the underwater 14.5 is attached to their lower ends.

That is, the flaps 60 and 70 are configured to play the role of struts. The flap 60.70 is rotated about the strut 20.30 together with the strut 20.30 and the hydrofoil 4.5.

Alternatively, the struts 20, 30 and the submersible 14.5 may be fixed so that only the flaps 60.degree. 70 rotate around the struts 20.30.

A pair of struts having flaps may be provided at the front and rear as shown in FIG. 2, or one strut may be provided at the front and rear as shown in FIG.

In the case of a small boat, it is preferable to use one strut at the front and the rear, as this makes the structure simpler, lighter, and easier to operate. Further, the flaps may be formed not only on the struts but also on the hydrofoils so that a tilting moment is generated by both the flaps of the struts and the flaps of the hydrofoils.

An example of the operating means for the flaps 60 and 70 is shown in the fourth example.
As shown in the figure. A connecting rod 8 is attached to the arm 81 at the shaft end of the operating handle 8.
2 are connected to each other, and an arm 84 rotatable around a pivot 83 is connected to the distal end thereof, and a connecting member 86 is provided at the distal end of an arm 85 that is integral with this arm 84. This connecting member 8
6 is rotatably connected to arm 85 about its axis 89. The connecting member 86 has connecting rods 8 extending in opposite directions.
7 and 88 are connected to each other, and an arm 61 for operating the strut 60 and an arm 71 for operating the strut 70 are respectively connected to their other ends.

When the operating handle 8 is rotated in the direction of the arrow, the arm 81 pulls the connecting rod 82 in the direction of the arrow, and the arm 84.8
5 and connecting member 86, the connecting rods 87 and 88 are moved in the direction of the arrow, respectively, and the strut 60.70 is rotated in the direction of the arrow by the arm 61.71. When the operating handle 8 is rotated in the opposite direction, each member moves in the opposite direction to the above, and the struts 60 and 70 are moved in the opposite direction (
(direction of arrow B). When the operating handle 8 is operated in this way, the strut 60 is moved as shown in FIG. 5(A).
and strut 70 in the same direction.

On the other hand, an operating rod 9 rotatable around a pivot shaft 90 is provided, a semicircular operating plate 99 is integrally connected to this operating rod 9, and operating wires 91 are connected to both ends of the operating plate 99, respectively. A semicircular operating plate 92 rotatable around the pivot shaft 83 is connected to the other end of the operating wire 91, and an arm 93 integrated with the operating plate 92 is connected to the connecting member 86 by a connecting rod 94. is connected to. And foot 1
When the operating rod 9 is rotated around the pivot shaft 90 in the direction B, for example, by using the 0 button, the actuating plate 92 and the arm 93 are rotated around the pivot shaft 83 through the pair of wires 91, and the connecting member 86 is rotated through the connecting rod 94. Rotate around the axis 89, thereby moving the connecting rod 87 in the six directions of the arrow and the connecting rod 88 in the direction of the arrow B, and rotating the strut 60 in the six directions of the arrow and the strut 70 in the direction of the arrow B using the arm 61°71. .

When the connecting rod 9 is rotated in the opposite direction, each member moves in the opposite direction, and the struts 60 and 70 are rotated in the opposite direction. When the operating rod 9 is operated in this manner, the struts 60 and 70 are operated in opposite directions as shown in FIG. 5(B).

As mentioned above, when the operating handle 8 is operated, the front and rear struts 60 and 70 are operated in the same direction, and when the operating rod 9 is operated, they are operated in opposite directions, so both operations can be performed independently of each other. By operating both at an appropriate ratio, the front and rear struts 60 and 70 can be operated in any direction and at any angle. For example, as shown in FIG. 5(C), the front strut 60 can be moved to the neutral position. ,
The rear strut 70 can also be operated to the right.

Note that the strut operating means is not limited to the mechanical operating means as described above, but it is also possible to employ electrical operating means using a servo motor or the like.

Next, the operation of this device will be explained. The ship is propelled by the drive of a propulsion device (not shown), and when the speed reaches a certain level, the hull 1 is lifted above the water surface by the lifting force of the hydrofoils 4 and 5.
The strut 2.3 penetrates the water surface, and the hydrofoil 4.5 travels completely submerged in the water. During navigation, the hull 1 is maintained at a constant height above the water surface by adjusting the angle of attack of the front hydrofoil 4.

Turning is performed by operating the flaps using the operating means as described below.

When the front and rear flaps 60° and 70 are operated in the same direction and at the same angle as shown in FIG. It rotates and tilts substantially to the center of gravity of the hull 1. In other words, only the heeling moment acts, and the lateral movement of the hull 1 is small.
The hydrofoil 4.5 is moved laterally to the center of gravity of the hull 1, thereby causing it to tilt. Also, Figure 5 (B)
When the front and rear flaps 60 and 70 are operated at the same angle in opposite directions as shown in FIG. 0, and only a turning moment is generated. Furthermore, Figure 5 (
If the operating angles of the front and rear flaps 60 and 70 are different from each other in the state shown in C) or in FIGS. A moment occurs.

In this way, since the heeling moment and the turning moment can be generated independently of each other, the heeling moment and the turning moment can be adjusted independently by appropriately adjusting the operating angles of both. The ship can be kept stable even when turning. Note that G indicates the center position of the hull 1.

As described above, the heeling moment and the turning moment can be adjusted independently of each other, so that the movement of the center of gravity of the ship is small, and the hydrofoil is substantially moved to the layer of the center of gravity of the ship. This allows the hull to list rapidly.

(Effects of the Invention) As explained above, the present invention is configured such that flaps are provided in the underwater portions of the front and rear struts, and the front and rear flaps are simultaneously operated in the same direction or opposite directions by the operating means. By moving the wings substantially to the center of gravity of the hull, the hull can be quickly tilted to a predetermined angle, allowing rapid movement.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view of a hydrofoil boat showing an embodiment of the present invention, Fig. 2 is a horizontal sectional view of a strut, Fig. 3 is a view equivalent to Fig. 2 showing another example of the strut, and Fig. 4 is a A perspective view showing an example of a flap operating means, FIGS. 5(A), (B), (
C) is an explanatory diagram showing the operating state of the flaps, and FIG. 6 is an explanatory diagram showing the tilting state of the hull. 1... Hull, 2.3, 20.30... Strut,
4.5... Hydrofoil, 6.7.60.70... Flap, 8... Operating handle, 9... Operating rod. Patent applicant: Yamaha Motor Co., Ltd. No. 5
Figure 6

Claims (1)

[Claims] 1. A hydrofoil boat having at least one strut on the front side and one on the rear side of the center of gravity of the hull and a fully immersed hydrofoil at the tip thereof, and a flap provided on each of the underwater parts of the front and rear struts; 1. A fully immersive hydrofoil boat comprising: operating means for operating the flaps, the operating means being configured to simultaneously operate the front and rear flaps in the same direction or in opposite directions.