JPH1134968A - Water surface/underwater towed body and power generating system by towing vibration - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water surface/underwater towed body storing a marine information measuring instrument and an information communication apparatus, self-generating power via steady state vibration at the time of underwater towing, allowing the operation of the apparatuses over a long period, and capable of stably exchanging communications with another system such as an artificial satellite in a stable attitude at the time of water surface towing. SOLUTION: The body 4 of this towed body is constituted of a head section 1, a barrel section 2, and a tail section 3. The upper section and the rear end 5 of the head section 1 connected to the cylindrical barrel section 2 are erected into a U-shaped cross section, and both side ends are protruded outward from the outer periphery of the barrel section 2. A slant plane 9 with the tilt angle of about 40 deg. is formed from a head section tip upper section 7 toward a head section rear end 5, side slant planes 10 made gradually slender from both outside end sections toward the head section tip center is formed, and a hook tool 12 connecting a towing rope is fitted nearly at the center section of the slant plane 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a towed body having a built-in marine information measuring device, which generates self-power by vibrating steadily at the time of underwater towing, makes it possible to operate the device for a long time, and at the time of water surface towing. The surface of the water, which enables stable communication with other systems such as satellites
It relates to an underwater towing body.

[0002]

2. Description of the Related Art A conventional towing body having built-in observation equipment mainly uses a battery and has a limited power supply capacity.
For long-term operation, the volume becomes large and troubles occur in various fields. In addition, a method of self-power generation by vibrating the tow body is also being planned, but the fact is that a tow body that can simultaneously perform efficient power generation and stable information exchange with other systems has not yet been developed. is there.

[0003]

SUMMARY OF THE INVENTION In order to efficiently operate a self-powered generator, the present application is to stably perform steady vibration during underwater towing to provide efficiency information through a satellite communication system or the like. This was done to develop a towing body that could be used.

In general, an object towed in water generates a vortex due to separation of a boundary layer from the surface of the towed body as the towing speed increases, and a turbulent state occurs around the towed body. Therefore, the towing attitude becomes unstable, and the resistance of the towing body increases. Although this turbulent state can be solved by making the towing body streamlined, the present application has developed a structure suitable for efficiently converting the vibration of the towing body into electric energy and reducing the towing resistance. It was done to do so.

Further, the towed body to which the present invention relates incorporates an information measuring device for collecting various information such as water depth, water temperature, salinity, water pressure, current position, etc., and a device for transmitting the collected information. However, this towed body needs to float the collected valuable information when whales and the like surface on the surface of the water and communicate efficiently with external information systems such as satellites. Stable running is also required in terms of directivity and the like, and contradictory functions are required between underwater and water.

The present application has been made to provide a towing body having both of these contradictory functions, that is, a function of obtaining a desired steady-state vibration at the time of towing underwater and a function of maintaining a stable posture of the boat at the time of towing. is there.

[0007]

According to the present invention, in a body comprising a head, a torso, and a tail, an upper portion of the head from the center is raised in a U-shaped section so as to protrude from a cylindrical torso, and , With the rear end protruding outward, and with a slanting plane from the top of the head to the rear end of the head, at the same time forming a side slanting plane that gradually narrows from both outer ends toward the center of the head In addition, a tow rope locking device is attached to a substantially central portion of the inclined plane.

When the head is formed as an inclined plane, it becomes a rectifying surface during towing on the surface of the water and the towing attitude is stabilized. The posture in the water is stabilized.

In addition, the rear end of the head projects outward from the trunk, and a side slope is formed from the rear end toward the front end. A steady vibration mainly composed of the body can be obtained, which contributes to the improvement of the efficiency of self-power generation built into the body, and the change in the force applied to the locking device during towing compared to pitching and yawing vibration. Can be smaller.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described below in detail with reference to the drawings. According to the present invention, the upper part and the rear end 5 of the head 1 connected to the cylindrical body 2 in the body 4 composed of the head 1, the body 2 and the tail 3 stand up in a U-shaped cross section, and the both ends 6, 6 ｀
Is projected outwardly from the outer periphery of the torso portion 2, an inclined plane 9 having an inclination angle 8 of about 40 ° is formed from the upper end 7 of the head to the rear end 5 of the head, and both outer ends 6, Bevel plane 1 so that it gradually becomes thinner toward the center of the head than 6 ｀
0, 10 ° are formed, and a locking member 12 for connecting the towing line 11 is attached to a substantially central portion of the inclined plane 9.

In the drawings, 13 is an antenna, 14 is an information measuring device, 15 is an information communication device, 16 is a power generator, 17
Indicates a weight. However, the weight 17 is used for balance adjustment and may not be used.

Various tests were conducted on the towing body of the present invention using a circulating water tank. Conditions: Flow velocity 50, 100, 130cm / sec. Towing line diameter 0.29mm
Length 80cm (1) Water surface towing test The towing line 11 is parallel to the water surface 18. FIG. 6 shows the attitude at the time of towing the water surface. Result: The body 4 became a hull-shaped towing body with the inclined plane 9 as the sliding plate due to the relationship between the buoyancy and the center of gravity, and the towing posture was stable. At any of the flow velocities of 50, 100 and 130 cm / sec, no running wave was applied to the upper part of the body, and no large vibration was observed.

(2) Underwater towing test FIG. 7 shows the posture during underwater towing. Result: Due to the effect of the dive force and the buoyant position generated by the diagonal plane 9 of the head 1 of the body (4) under the water pressure and the floating position, the dive surface is turned upside down as compared with the above-mentioned towed surface, and a stable dive posture with steady vibrations Kept. At this time, separation of the boundary layer due to the effects of the inclined plane 9, the side inclined planes 10 and 10 °, the rear end 5 of the head, and both end parts 6 and 6
A vortex was generated in ｀, and the body 4 generated a slight vibration.

(3) Measurement of vibration period of towing body, comparison with video image analysis during towing underwater Measurement of vibration period of towing body by change in tension applied to locking device Measurement instruments: strain gauge, dynamic strain Total, FFT analyzer-Flow velocity 100cm / sec Result: The vibration of the towing body is mainly shown in Figs.
Was kind. 1) Rolling vibration: see FIG. 8 Vibration cycle (Hz) rotating about the central axis of the body trunk 2 11.5 2) Yaw vibration: see FIG. Vibration period (Hz) oscillating right and left 5.8 3) Pitching vibration ... see Fig. 10 Vibration period in which the whole body moves up and down Period (Hz) 1.0 to 4.5 Pitching vibration has a low period and small amplitude Therefore, there was no significant effect on the towing behavior.

Test results 1) to 3) It has been found that the towing body according to the present invention vibrates mainly by rolling having a high vibration period.

[0016]

[Table 1]

[0017]

The water surface / underwater towed body of the present invention can obtain a rolling type steady vibration which is convenient for self-power generation while maintaining a stable posture during underwater towing, and at the time of water surface towing. In this case, a stable running posture can be maintained. Therefore, self-generated electricity can be efficiently generated during towing underwater, so that long-term stable power can be supplied to various information collection equipment and information communication equipment built in the body, and the data collected so far when it surfaced on the water It has many excellent features, such as being able to efficiently and stably exchange information with a satellite communication system or the like.

[Brief description of the drawings]

FIG. 1 is a perspective view of a state where the upper and lower parts are inverted.

FIG. 2 is a side view of the towing body.

FIG. 3 is a rear view of the towing body.

FIG. 4 is a rear view of the towing body.

FIG. 5 is a front view of the towing body.

FIG. 6 is a side view when the water surface is towed.

FIG. 7 is a side view at the time of underwater towing.

FIG. 8 is a plan view showing rolling vibration during towing underwater.

FIG. 9 is a plan view showing yawing vibration.

FIG. 10 is a plan view showing the pitching vibration.

[Description of sign]

 Reference Signs List 1 head 2 torso 3 tail 4 body 5 rear end of head 6, 6 ｀ side end 7 head end 8 inclination angle 9 inclined plane 10, 10 ｀ side inclined plane 11 towing cable 12 locking device 13 antenna 14 Information measurement equipment 15 Information communication equipment 16 Power generation equipment 17 Weight 18 Water surface

 ──────────────────────────────────────────────────続 き Continued on the front page (71) Applicant 597109438 Tomohiro Miki 4-25-5 Nishikamata, Ota-ku, Tokyo (71) Applicant 597109449 Tomonao Hayashi 2-17-7, Kichijoji Higashicho, Musashino City, Tokyo (71) Applicant 597109450 Hisaaki Maeda 3-17-25 Yakumo, Meguro-ku, Tokyo (72) Inventor Hisao Hoshino 23-14-203 Yaesaki-cho, Hiratsuka-shi, Kanagawa Chisun Garden House Yaesaki (72) Inventor Hiroshi Inada Fujigaoka, Fujisawa-shi, Kanagawa 3-24 RA53 (72) Inventor Nozomi Noda 4-11-17 Sanno, Ota-ku, Tokyo (72) Inventor Tomohiro Miki 4-25-5, Nishikamata, Ota-ku, Tokyo (72) Inventor Tomonao Hayashi Kichijoji, Musashino-shi, Tokyo 2-17-7 Higashicho (72) Inventor Hisaaki Maeda 3-17-25 Yakumo, Meguro-ku, Tokyo

Claims (4)

[Claims] 1. An oblique plane is provided from an upper end of a head to a rear end of a head of a body including a head, a torso, and a tail, and
A water surface / underwater towed body characterized in that a tow rope locking device is attached at a substantially central portion thereof. 2. With the upper part of the head raised from the center of the head in a U-shaped cross section, the head protrudes outward from the cylindrical body, and gradually narrows from both outer ends toward the center of the head end. The water surface / underwater towed body according to claim 1, wherein the side inclined plane is formed as described above. 3. The body becomes a stable towed body when ascending by making the head of the body an oblique plane, and when underwater towing, the body is turned upside down due to the interaction of the position of the center of gravity, the position of the towed rope, and the like. A water surface / underwater towing body characterized in that steady vibrations can be obtained by generating vortices having a fixed period at the edge and the rear end of the side inclined plane of the head. 4. A towing device characterized in that a body containing an information collecting device, a communication device, an antenna, a power generator or a weight or the like is steadily vibrated at the time of towing underwater to generate power by itself and to supply power to various devices. Power generation system by vibration.