JP2016068670A - Underwater observation equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underwater observation device capable of stabilizing the posture in the water where a water flow changes in various ways.SOLUTION: An underwater observation device 1 includes a sensor accommodation container 10 for accommodating a sensor 16 used in water, and a pair of stabilizing wings 12L and 12R provided outside the sensor accommodation container 10 and having a long plate-like part 120 that extends backward along a water flow 5 against the sensor accommodation container 10. The stabilizing wings 12L and 12R can be equipped with a vertical tail 121. Thereby, even when a relative flow 5 changes in various ways, the posture of the underwater observation device 1 can be maintained in a constant direction with respect to the water flow 5 following the change of the flow.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an underwater observation apparatus.

  Underwater observation devices are towed by a towed mother ship, or fixed at a fixed point with anchors or floats to search for resources and measure tidal currents and water temperatures. Underwater observation devices often take the shape of a sphere or capsule in order to resist water pressure. The underwater observation device having such a shape is affected by a vortex generated behind the underwater observation device itself due to the action of a relative flow or tidal current during towing. For this reason, the underwater observation apparatus may be greatly touched so as to rotate up and down or left and right, and further with respect to a vertical axis or a horizontal axis.

  Various measuring devices are installed inside the underwater observation device. Therefore, if the flow acts on the underwater observation device and the attitude of the underwater observation device changes greatly or the relative positional relationship between the underwater observation device and the observation target changes, the measurement accuracy of the measurement device decreases.

  Therefore, in Patent Document 1, a stabilizing blade opened at 120 degrees is installed on the rear side of the capsule-like observation device. Thereby, in patent document 1, it is trying to stabilize the attitude | position of an observation apparatus by suppressing the pressure fluctuation which generate | occur | produces when a flow peels from the surface of an observation apparatus.

  Moreover, in the underwater observation apparatus shown in Patent Document 2, the observation apparatus having a streamline shape has a desired towing attitude, and the attitude is maintained by controlling the roll angle and the pitch angle. In Patent Document 2, the towing posture is controlled by controlling the position of the weight inside the observation apparatus.

  In Patent Document 3, side stabilizer blades extending in the longitudinal direction of the observation apparatus are provided on the outer peripheral surface of the capsule-shaped observation apparatus, spaced apart by 90 degrees in the circumferential direction. Thus, in Patent Document 3, the attitude of the observation apparatus is held vertically even when the observation apparatus is rapidly submerged in water or rapidly pulled up.

U.S. Pat. No. 4,528,930 Japanese Patent Laid-Open No. 11-20788 JP 2000-153798 A

  In the technique of Patent Document 1, since only a stabilizing wing that slightly protrudes from the outer peripheral surface of the observation device is provided, when the water flow hits the observation device obliquely from the front, near the point where the water flow separates from the observation device. Therefore, it is difficult to control the water flow that peels off from the observation device, and it takes time to stabilize the posture again.

  In the technique of Patent Document 2, since it is necessary to provide a mechanism for moving the weight inside the observation apparatus, the observation apparatus is increased in size, the configuration thereof is complicated, and the cost is increased.

  The technique of Patent Document 3 aims at attitude control when the observation apparatus is subsidence and when it is pulled up, and does not consider attitude control when a water flow strikes the observation apparatus at an angle.

  The present invention has been made paying attention to the above problems, and an object of the present invention is to provide an underwater observation apparatus capable of stabilizing the posture in water in which the flow of water flow changes variously. Another object of the present invention is to provide an underwater observation apparatus that can stabilize the posture with a relatively simple configuration and does not require a large space for posture stabilization.

  In order to solve the above problems, an underwater observation device used in water according to the present invention includes a sensor storage container for storing a sensor to be used in water, and a stabilizing blade provided outside the sensor storage container, the sensor storage container A pair of stabilizing blades having a long plate-like portion extending rearward along the water flow.

  According to the present invention, the pair of stabilizing blades has the long plate-like portion extending rearward along the water flow with respect to the sensor container, so that even when the relative flow changes variously, the followability to the change is good. Since it is high, the posture of the underwater observation device can be maintained in a fixed direction with respect to the water flow, and even when the posture changes, it can be returned to the original posture in a relatively short time.

Explanatory drawing which shows a mode that the underwater observation apparatus is towed by the towed mother ship. The schematic perspective view which expands and shows an underwater observation apparatus. FIG. 3 is a schematic cross-sectional view along arrows III (a) -III (a) and III (b) -III (b) in FIG. 2. The schematic perspective view of the underwater observation apparatus concerning 2nd Example. The schematic perspective view of the underwater observation apparatus concerning 3rd Example. The schematic perspective view of the underwater observation apparatus which concerns on 4th Example. The schematic perspective view of the underwater observation apparatus which concerns on 5th Example. The schematic perspective view of the underwater observation apparatus which concerns on 6th Example. The schematic perspective view of the underwater observation apparatus concerning 7th Example. The schematic perspective view of the underwater observation apparatus concerning 8th Example. The schematic perspective view of the underwater observation apparatus concerning a 9th example. The schematic perspective view of the underwater observation apparatus concerning 10th Example. The schematic perspective view of the underwater observation apparatus concerning 11th Example. The schematic perspective view of the underwater observation apparatus concerning a 12th example. The schematic perspective view of the underwater observation apparatus concerning 13th Example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present embodiment, posture stabilization structures 12L and 12R that can stabilize the posture of the underwater observation apparatus 1 under various situations are disclosed. As will be described later, the underwater observation device 1 of the present embodiment changes the point at which the flow separates from the underwater observation device 1 in the vertical line direction (Z direction) of the underwater observation device 1. That is, in the vicinity of the upper part of the underwater observation device 1 where the pair of stabilizing blades 12L and 12R are provided, the flow is separated at a position away from the underwater observation device 1, and the underwater observation device where the stabilization blades 12L and 12R are not provided. In the vicinity of the lower part of 1, the flow is separated at a position close to the underwater observation apparatus 1. Thereby, in this embodiment, the force which acts on the underwater observation apparatus 1 is reduced, and the behavior of the underwater observation apparatus 1 is suppressed.

  For example, in the present embodiment, the pair of stabilizing blades 12L and 12R are rotatably provided behind the relative traveling direction (X direction) of the underwater observation apparatus 1. Each of the stabilizing blades 12L and 12R has a long plate-like portion 120 that extends to the rear of the underwater observation apparatus 1. By adopting such a configuration, in the present embodiment, when the flow is relatively applied to the underwater observation device 1, the posture of the underwater observation device 1 is maintained so as to maintain a constant direction with respect to the flow. , Suppress the behavior. Further, even when the flow direction changes locally or temporarily due to the influence of a tidal current or the like, the attitude of the underwater observation apparatus 1 can be corrected in a relatively short time by following the change quickly. .

  A first embodiment will be described with reference to FIGS. FIG. 1 shows an underwater observation apparatus 1 that is being towed by a towed mother ship 2. The detailed configuration of the underwater observation apparatus 1 will be described later with reference to FIGS.

  The underwater observation apparatus 1 is suspended underwater (for example, in the sea) from the towed mother ship 2 via the cable 3 and performs predetermined observation while being towed by the towed mother ship 2. Examples of the predetermined observation include measurement of a tidal current and a water temperature, observation of an observation object, and the like. Reference numeral 4 denotes the sea surface.

  In addition to functioning as a towline, the cable 3 shown in FIG. 1 also functions as a communication cable for an apparatus (not shown) on the towed mother ship 1 to exchange signals and information with the underwater observation apparatus 1. .

  The flow 5 acts on the underwater observation apparatus 1 relatively. Hereinafter, the flow 5 may be referred to as the water flow 5. In the following description, the direction of the flow 5 relative to the underwater observation apparatus 1 is the X direction, the vertical line is the Z direction, and the direction orthogonal to both the X direction and the Z direction is the Y direction. For convenience, the X direction may be referred to as the front-rear direction, the Z direction as the up-down direction, and the Y direction as the left-right direction.

  Please refer to FIG. 2 and FIG. The underwater observation apparatus 1 includes, for example, a sensor container 10, a support device 11 as a “support portion”, stable blades 12L and 12R, a blade attachment portion 13, a support device attachment portion 14, a sensor 16, and the like.

  The sensor storage container (hereinafter referred to as a container) 10 is formed in a capsule shape (long spherical shape) in which hemispherical portions are integrally formed on upper and lower ends of a cylindrical main body, for example. The container 10 is often formed in a capsule shape or a spherical shape to withstand water pressure, but is not limited thereto. Any shape other than a capsule shape or a spherical shape may be used as long as the shape can withstand water pressure at a predetermined depth and the posture can be controlled by the pair of stabilizing blades 12L and 12R. In addition, the container 10, the support device 11, and the stabilizing blades 12L and 12R can be manufactured from, for example, a metal material such as high-tensile steel. However, the material is not limited to this, and any material that can withstand use in the sea at a predetermined depth may be used. .

  The support device 11 is an instrument for attaching the cable 3 to the container 10. The support device 11 includes, for example, a pair of attachment stays 110 attached to the left and right side surfaces of the container 10 and a connecting portion 111 that connects one end of each attachment stay 110 (the upper end in FIG. 2). Each attachment stay 110 is attached to the container 10 by a support device attachment portion 14.

  Between the connection part 111 of the support apparatus 11 and the upper surface vicinity of the container 10, the flow path 15 which has a function as an attitude | position stabilization apparatus is formed. A part 6 of the flow 5 toward the underwater observation apparatus 1 flows into the low pressure region generated on the rear side (back side) of the container 10 through the flow path 15. The low pressure region generated on the rear surface side of the container 10 can be reduced by the flow 6 flowing into the rear side of the container 10, and the underwater observation apparatus 1 can be prevented from becoming unstable. Thus, in this embodiment, the attitude of the underwater observation device 1 is changed by utilizing not only the attitude stabilizing action by the one stabilizing blade 12L, 12R but also the low pressure region reducing effect caused by the flow 6 passing through the flow path 15. Can be stabilized.

  The pair of stabilizing blades 12 </ b> L and 12 </ b> R are provided on the left and right sides of the container 10 so as to extend to the rear of the container 10. Hereinafter, unless otherwise distinguished, the stable blades 12L and 12R are referred to as stable blades 12.

  Each stabilizing blade 12 includes a long plate-like portion 120 and a tail blade 121 formed integrally with the long plate-like portion 120. One end side of the long plate-like portion 120 is a fixed end that is rotatably attached to the wing attachment portion 13, and the other end side of the long plate-like portion 120 is in the flow 5 relative to the container 10. Along the rear side (X direction), it becomes a free end. The tail 121 is formed so as to extend upward from the rear part of the long plate-like part 120 in the vertical direction.

  The long plate-like portion 120 is formed with a length such that the rear portion protrudes rearward from the rear surface side of the container 10. More specifically, the length of the long plate-like portion 120 is set such that the tail 121 provided at the rear portion of the long plate-like portion 120 is located at the rear portion of the container 10.

  The stabilizer blade 12 of this embodiment is attached to the support device 11 via the blade attachment portion 13, and as a result, attached to the container 10 via the support device 11. The blade attachment portion 13 rotates the stabilizing blade 12 by a motor (not shown) in the container 10. The motor is driven in accordance with a control signal input from the towed mother ship 2 via the cable 3.

  When the stabilizer blade 12 is housed, the stabilizer blade 12 is positioned on both the left and right sides of the container 10 along the vertical direction, as indicated by a two-dot chain line in FIG. The posture indicated by the two-dot chain line is referred to as an accommodation posture. On the other hand, when the stabilizer blade 12 is used, the motor is driven to rotate, and the stabilizer blade 12 takes a posture along the water flow as shown by a solid line in FIG. The posture indicated by the solid line is referred to as a use posture.

  The sensor 16 is a device for measuring an underwater object, a water temperature, a tidal current, and the like, and is provided inside the container 10. Measurement information (measurement signals and measurement data) from the sensor 16 is sent to a device (not shown) in the towed mother ship 2 via the cable 3.

  FIG. 3 schematically shows the relationship between the underwater observation apparatus 1 and the flow. FIG. 3A shows a state where the flow is separated at the stabilizing blade 12. The relative water flow 5 with respect to the container 10 flows backward along the stabilizer 12 and generates a vortex 7. The flow passing through the flow path 15 is between the stabilizing blades 12 and flows into the rear surface side of the container 10.

  FIG. 3 (b) shows a state of the vortex 7 generated on the rear side of the container 10 located below the stabilizing blade 12. Comparing FIG. 3A and FIG. 3B, the position where the vortex 7 is generated differs by a distance ΔD corresponding to the length of the stable blade 12 depending on the presence or absence of the stable blade 12.

  As described above, in the present embodiment, by providing the stabilizing blade 12, the generation position of the vortex 7 can be made different between the upper and lower sides of the container 10. As a result, the force applied to the container 10 can be reduced as compared with the case where the vortex 7 is generated at substantially the same position in the vertical direction of the container 10. Therefore, when the underwater observation apparatus 1 is placed in the relative water flow 5, the behavior change can be suppressed, and the original stable posture can be restored in a relatively short time.

  In the present embodiment configured as described above, as described above, a pair of stabilizing blades 12 are installed on the left and right sides of the underwater observation apparatus 1, and the longitudinal direction of the stabilizing blade 12 is the direction of the relative flow 5 acting on the underwater observation apparatus 1. To match. The inventors attached the stable blades of various conditions to the underwater observation device using the water channel test and confirmed the motion of the underwater observation device. However, the pair of stable blades 12 may be provided on both the left and right sides of the underwater observation device. It showed the best stability.

  Further, in this embodiment, the stabilizer blade 12 includes a tail blade 121 in addition to the long plate-like portion 120, and is formed so that its surface area is relatively large. As the surface area of the stabilizer 12 increases, the stability improves. Furthermore, not only by extending the wings in the flow direction of the relative water flow 5, but also by providing the tail blades 121 perpendicular to the long plate-like portion 120, not only can it cope with steady flow changes, but also local or It is possible to follow the fluctuation of the temporary flow stably.

  As shown in FIG. 2, the stabilizing blade 12 of the present embodiment is kept away from the sensor 16 during use, so that the measurement by the sensor 16 is not disturbed. Therefore, in this embodiment, the posture of the underwater observation apparatus 1 can be stabilized without affecting the measurement accuracy of the sensor 16. As a result, the accuracy of observation can be increased.

  A second embodiment will be described with reference to FIG. Each of the following embodiments including this embodiment corresponds to a modification of the first embodiment, and therefore, description will be made focusing on differences from the first embodiment. In the underwater observation apparatus 1A of the present embodiment, the container 10A has a spherical shape. Configuring this embodiment like this also achieves the same operational effects as the first embodiment. Whether the shape of the container 10A is spherical or capsule-shaped, it is known that its fluid properties do not change much.

  A third embodiment will be described with reference to FIG. In the underwater observation apparatus 1 </ b> B of the present embodiment, the stabilizer blade 12 is directly attached to the container 10 instead of the support device 11. In the present embodiment, the positional relationship between the blade attachment portion 13 and the support device attachment portion 14 is opposite to the example shown in FIG. 2, and the blade attachment portion 13 is positioned below the support device attachment portion 14. To do.

  The effect of stabilizing the posture of the underwater observation apparatus 1B is almost the same between the case where the stabilizer blade 12 is directly attached to the underwater observation apparatus 1B and the case where it is indirectly attached via the support apparatus 11. However, when the stabilizer blade 12 is directly attached to the underwater observation apparatus 1B, the attachment position is determined by comprehensively considering the position of the center of gravity of the underwater observation apparatus 1B.

  A fourth embodiment will be described with reference to FIG. The underwater observation apparatus 1C of the present embodiment is further provided with a connecting blade 122 for connecting the stable blade 12 in the configuration of the underwater observation apparatus 1 of the first embodiment.

  Specifically, in the present embodiment, a flat connecting blade 122 is integrally provided so that the upper ends of the vertical tails 121 of the stabilizing blade 12 are connected to each other. When the stabilizing blade 12 is in the use posture, the position of the connecting blade 122 of the stabilizing blade 12 in the vertical line direction is substantially equal to the position of the connecting portion 111 of the support device 11.

  Configuring this embodiment like this also achieves the same operational effects as the first embodiment. Furthermore, in this embodiment, since the vertical tails 121 of the stabilizing blades 12 are connected by the flat connecting blades 122, the stability in the vertical direction can be improved. That is, in this embodiment, the long plate-like portion 120 parallel to the relative water flow 5 can improve the stability in the left-right direction of the underwater observation apparatus 1C, and the connecting wings 122 that connect the vertical tails 121 to each other The stability in the vertical direction of the observation apparatus 1C can be improved.

  When the stabilizer blade 12 is attached to the support device 11 by the blade attachment portion 13 as in the present embodiment, when the support device 11 tilts forward due to the underwater observation device 1C being towed, the connecting blade 122 of the connection blade 122 is tilted in accordance with the tilt. The angle to the water flow (attack angle) changes. Therefore, in a normal towing or mooring state, the support device 11 is tilted, so that lift is applied to the connecting blade 122 according to the angle of attack with respect to the water flow 5A. Using this lift, the posture of the underwater observation apparatus 1C can be further stabilized.

  A fifth embodiment will be described with reference to FIG. The underwater observation apparatus 1D of the present embodiment uses a spherical container 10A as described in FIG. In addition, as described in FIG. 5, the underwater observation apparatus 1 </ b> D of the present embodiment directly attaches the stable blade 12 to the container 10 </ b> A using the blade attachment portion 13. Furthermore, as described in FIG. 6, the underwater observation apparatus 1 </ b> D according to the present embodiment connects the vertical tails 121 to each other with the flat connecting blades 122.

  Configuring this embodiment like this also achieves the same operational effects as the first embodiment. Furthermore, in the present embodiment, since the stabilizing blade 12 is attached to the container 10A of the underwater observation apparatus 1D, the same effect as in the case of FIG. 6 can be obtained by setting an angle with respect to the flow in advance.

  A sixth embodiment will be described with reference to FIG. Compared to the configuration of the underwater observation device 1C shown in FIG. 6, the underwater observation device 1E of the present embodiment does not include the vertical tail 121, and instead of the flat connection blade 122, the arc-shaped connection blade 123 is used. Have

  The stabilizer blade 12 is attached to the support device 11 so as to be rotatable about the blade attachment portion 13, and the arcuate connecting blade 123 is folded so as to cover the outer periphery of the container 10 when housed. Therefore, the radius of the arcuate connecting blade 123 is designed to be slightly larger than the radius of the container 10.

  Accordingly, when the stabilizing blade 12 is in the accommodation posture, the arc-shaped connecting blade 123 is positioned so as to cover the outer peripheral side of the container 10, so that the outer dimensions of the underwater observation apparatus 1 </ b> E are reduced during transportation or accommodation. can do. Therefore, the space required for transportation and accommodation of the underwater observation apparatus 1E can be reduced, and usability is improved.

  The arc-shaped connecting blade 123 does not need to be configured to be able to be in close contact with the outer peripheral side of the container 10. The arcuate connecting blade 123 may be configured to be positioned on the outer peripheral side of the container 10 to such an extent that the overall dimensions of the underwater observation apparatus 1E can be made smaller than that in use.

  The stable wing 12 of the present embodiment does not include the vertical tail wing 121, and the connecting wing 123 is formed in an arc shape, so that the attitude of the underwater observation apparatus 1E is more stable than those of the first and fourth embodiments. There is a possibility that the effect to be reduced will be reduced. Therefore, in the present embodiment, the area of the long plate-like portion 120 and the arc-shaped connecting blade 123 is made larger than that of the first embodiment or the fourth embodiment, and is equivalent to the first embodiment or the second embodiment. It is preferable to design so as to obtain a posture stabilizing effect.

  A seventh embodiment will be described with reference to FIG. The underwater observation apparatus 1F of the present embodiment includes a pair of stabilizing blades 12 provided with an arc-shaped connecting blade 12 behind the long plate-like portion 120, as described in the sixth embodiment.

  However, in the present embodiment, the stabilizing blade 12 is provided so as to be directly rotatable on the container 10 without using the support device 11. Therefore, in the present embodiment, as described in the third embodiment, the mounting position of the stabilizing blade 12 is determined by comprehensively considering the position of the center of gravity of the underwater observation apparatus 1F.

  The eighth embodiment will be described with reference to FIG. The underwater observation device 1 </ b> G of the present embodiment has a stable wing 12 composed only of a long plate-like portion 120, and has neither a vertical tail blade 121 nor connecting blades 122 and 123.

  Therefore, the underwater observation device 1G of the present embodiment is more stable in the posture than the other underwater observation devices 1, 1A, 1B, 1C, 1D, 1E, and 1F having the vertical tail 121 and the connecting blades 122 and 123. Low performance. However, since the stabilizing blade 12 of the underwater observation apparatus 1G according to the present embodiment does not include the vertical tail blade 121 and the connecting blades 122 and 123, the overall structure is simple and small, and the weight can be reduced. Accordingly, it is possible to reduce the motor torque required for the rotation of the stable blade 12 and to move the stable blade 12 with a relatively low torque motor.

  Therefore, for example, in underwater with a relatively stable flow, the underwater observation apparatus 1G of the present embodiment is less likely to have the disadvantage that the posture stability performance is low, while being able to enjoy the benefits of downsizing.

  A ninth embodiment will be described with reference to FIG. As described in the eighth embodiment, the stable blade 12 of the underwater observation apparatus 1H according to the present embodiment includes only the long plate-like portion 120, and neither the vertical tail blade 121 nor the connecting blades 122 and 123 are provided. And the stabilization blade | wing 12 of the underwater observation apparatus 1H by a present Example is attached to the container 10 so that rotation is possible directly.

  A tenth embodiment will be described with reference to FIG. In the underwater observation apparatus 1J according to the present embodiment, the support blade 11 is integrally provided with the stabilizing blade 12A. The stabilizing blade 12A is, for example, a triangular plate-like portion 120A provided on the upper side of each mounting stay 110 of the support device 11, and each long plate so as to cover the upper side of the pair of long plate-like portions 120A. It is comprised from the rectangular connection wing | blade 124 connected to the upper end part of the shape part 120A.

  The long plate-like portion 120A has a triangular shape (for example, a right triangle shape) such that the width dimension on the base end side connected to the support device 11 is the largest, and the width dimension decreases toward the distal end side extending rearward of the container 10. ). Note that the long plate-like portion 120A is not limited to a triangular shape, and may have another shape such as a trapezoidal shape.

  Configuring this embodiment like this also achieves the same operational effects as the first embodiment. Further, in this embodiment, the stabilizing blade 12A and the support device 11 are integrated, so that the number of parts can be reduced, and the manufacturing cost can be reduced.

  A thirteenth embodiment will be described with reference to FIG. In this embodiment, unlike the above embodiments, the underwater observation device 1K is used upside down, and the fixing device 8 fixed in water and the underwater observation device 1K are connected by the cable 3.

  The fixing device 8 is configured, for example, as a ridge or a weight, and is installed on the seabed B or the like. Information observed by the underwater observation apparatus 1K can be transmitted to the outside by radio or ultrasonic waves, or can be stored in a recording device (not shown) in the container 10A.

  By using it upside down as in the underwater observation apparatus 1K of the present embodiment, it is possible to observe at a certain position in the water.

  A fourteenth embodiment will be described with reference to FIG. In the underwater observation device 1L of the present embodiment, the vertical relationship between the support device 11 and the stabilizing blade 14 is reversed. That is, the support device 11 is provided on the lower side of the container 10, and the stabilizing blade 12 is provided on the upper side of the container 10. The support device 11 is connected to a fixing device (not shown) or the like via a cable 3 as a mooring line. As in the fourth embodiment, the stabilizing blade 12 has the connecting blade 122 positioned on the upper side.

  A thirteenth embodiment will be described with reference to FIG. The underwater observation apparatus 1M of this embodiment is connected to a fixed float 9 floating on the sea surface 4 via a cable 3. Thus, the underwater observation device 1M may be towed, connected to the fixing device 8 installed on the seabed B, or connected to the fixed float 9 floating on the sea surface 4.

  In addition, this invention is not limited to embodiment mentioned above. A person skilled in the art can make various additions and changes within the scope of the present invention. The features described in each embodiment can be used in appropriate combination with the configurations of the other embodiments. For example, the structure of the stabilizing blade, the mounting position of the stabilizing blade, the structure of the support device, the mooring or towing method of the underwater observation device can be combined as appropriate.

  1, 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1J, 1K, 1L, 1M: Underwater observation device, 2: Towing mother ship, 3: Cable, 5: Water flow (relative flow), 10: Sensor container, 11: support device, 12L, 12R, 12A: stabilizing blade, 120, 120A: long plate-like portion, 121: vertical tail, 122, 123, 124: connecting blade

Claims (9)

An underwater observation device used underwater,
A sensor container that houses a sensor for use in water;
A pair of stabilizing blades provided on the outside of the sensor container, each having a long plate-like portion extending rearward along a water flow with respect to the sensor container;
An underwater observation device. The pair of stabilizing blades are provided outside the sensor container so as to be rotatable within a predetermined angle range,
When using the pair of stabilizing blades, the elongated plate-like portion takes a use posture extending rearward along the water flow,
When the pair of stabilizing blades are not used, the elongated plate-like portion takes a housing posture located on the side of the sensor housing container,
The underwater observation apparatus according to claim 1. A connecting wing connecting the pair of stabilizing wings;
The underwater observation apparatus according to claim 2. The connecting wing is formed in a predetermined arc shape corresponding to the outer peripheral surface of the sensor container,
When the pair of stabilizing blades takes the housing posture, the connecting blade is close to the outer peripheral surface of the sensor container,
The underwater observation apparatus according to claim 3. The sensor container is provided with a support for connecting the sensor container to an external device via a cable,
Between the support part and the sensor container, a flow path is formed for a part of the water flow flowing toward the sensor container to flow in,
The water flow flowing out from the flow path is designed to flow between the pair of stabilizing blades.
The underwater observation apparatus according to claim 4. The pair of stabilizing blades and the support portion are integrally formed.
The underwater observation apparatus according to claim 5. The external device is a towed mother ship;
The sensor container is suspended from the towed mother ship using the cable.
The underwater observation apparatus according to claim 5. The external device is provided so as to be located at a predetermined point in water or on water.
The underwater observation apparatus according to claim 5. Each of the stabilizing blades includes the long plate-shaped portion and a tail blade provided on the long plate-shaped portion, and the tail blade is perpendicular to the longitudinal direction of the long plate-shaped portion. And provided in the elongated plate-like portion so as to be parallel to the water flow,
The underwater observation apparatus according to claim 1.

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