Transverse low-resistance wing type multi-element acoustic array platform for UUV (Unmanned Underwater Vehicle)

Abstract

The invention relates to the technical field of UUV sound array platforms, in particular to a transverse low-resistance wing type multi-element sound array platform for a UUV, the sound array platform is installed on the UUV, the front end of a wing is designed to be in a linear shape and contracts to the cabin section face of the UUV, it is guaranteed that the platform has better stability and follow-up performance when moving in water, flow noise is reduced, and the stability of the platform is improved. The array frame and the acoustic array are in flexible connection, and it is guaranteed that transmitted acoustic signals are not distorted.

Description

Technical Field

[0001] The present invention relates to the technical field of UUV acoustic array platforms, and specifically relates to a lateral low-resistance wing-shaped multi-element acoustic array platform for UUVs. Background Art

[0002] The research and development of unmanned underwater vehicles (UUVs) has a history of several decades and is now widely used in the marine field. They carry acoustic instruments for various purposes and are used in marine scientific investigations, military investigations, target detection, seabed topography and landform investigations, marine environmental investigations, etc. The acoustic platform installed on the UUV is required to have the characteristics of stable attitude, small flow resistance, small flow noise, and good sound transmission performance.

[0003] Considering the characteristics of the acoustic array, which is often a large rectangular radiation surface and wide laterally, a horizontal wing line is used to reduce resistance during movement and ensure tracking performance during movement.

[0004] Currently, most existing UUV acoustic array platforms are suspended on the side, and the area for installing the acoustic array is small. The method of hanging the towing body can increase the area of ​​the acoustic array, but the stability and follow-up performance of the towing body are poor. The form of installation on the side of the UUV and the form of hanging the towing body are mainly installed on both sides to fit the side of the UUV. This solution has a limited installation area, and the array direction is difficult to be vertically downward, and it is difficult to ensure good follow-up and stability. Summary of the invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a lateral low-drag wing-shaped multi-element acoustic array platform for UUV.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lateral low-resistance wing-shaped multi-element acoustic array platform for UUV, comprising a wing compartment, a multi-element acoustic array frame, a wing fixing frame, a wing shell, a compartment fairing, a wing top cover, a floating body material, a watertight junction box, an electronic compartment, a non-acoustic sensor, a receiving array, a low-frequency transmitting array and an intermediate-frequency transmitting array, wherein the multi-element acoustic array frame is fixed to the wing compartment by the wing fixing frame, the wing shell is installed on the wing shell reserved interface of the multi-element acoustic array frame, and the wing top cover It is installed above the wing outer shell, the compartment fairing is installed above the wing compartment, the front and rear cavities of the wing outer shell, and the cavity between the upper part of the wing compartment and the compartment fairing are filled with floating materials, the watertight junction box is arranged on the wing fixing frame, the electronic compartment is arranged in the wing compartment, the non-acoustic sensor, receiving array, low-frequency transmitting array and medium-frequency transmitting array are respectively installed on the preset installation positions of the multi-acoustic base array frame, and the non-acoustic sensor, receiving array, low-frequency transmitting array and medium-frequency transmitting array are connected and communicated with the electronic compartment through the watertight junction box.

[0007] In some of the embodiments, a multi-element acoustic matrix array is symmetrically arranged on both sides of the wing compartment, and each multi-element acoustic matrix array is provided with corresponding mechanisms and device units.

[0008] In some of the embodiments, the wing shell is made of carbon fiber.

[0009] In some of the embodiments, the front end of the wing shell is retracted forward to the UUV cabin surface, and the maximum thickness at both ends is greater than the thickness of the middle area close to the cabin.

[0010] In some of these embodiments, the wing compartment dimensions match the dimensions of the UUV.

[0011] In some of the embodiments, the low frequency transmitting array and the medium frequency transmitting array are respectively arranged at two lateral ends of the multi-element acoustic base array frame.

[0012] In some of the embodiments, the low-frequency transmitting array and the intermediate-frequency transmitting array are installed with the multi-element acoustic base array frame by means of a soft connection.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: a lateral low-resistance wing-shaped multi-element acoustic array platform is designed, the platform has a larger lateral space, and a smooth transition is adopted between the platform and the relatively flat (occupying a smaller vertical space) multi-element acoustic array, and the front end smoothly transitions to the cabin section, so that the platform generates less resistance when moving, and ensures that the platform has better follow-up performance. The platform adopts a fixed installation method, and the front end of the wing is retracted forward to the UUV cabin section surface. At the same time, the maximum thickness at both ends of the lateral direction is slightly larger than the thickness of the middle area close to the cabin section, so as to better ensure the stability when moving in the water, so that the platform has better hydrodynamic performance when rotating with the UUV, stable attitude, small flow noise, and no tilt or roll phenomenon. The base array frame adopts a soft connection to install the transducer, and the transmitted signal is not distorted.

[0014] Details of one or more embodiments of the present application are presented in the following drawings and descriptions to make other features, purposes and advantages of the present application more concise and easy to understand. The present application is fully described and understood through the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the system of the present invention; Figure 2 This is a top view of the installation platform; Figure 3 This is a top view of the interior of the installation platform; Figure 4 Axonometric view of the interior of the installation platform Figure 5 is the line diagram of the wing shell (right half); In the figure: 1. Wing compartment; 2. Multi-element acoustic array frame; 3. Wing fixing frame; 4. Wing outer shell; 5. Wing top cover; 6. Floating material; 7. Array bracket; 8. Non-acoustic sensor; 9. Watertight junction box; 10. Receiving array; 11. Low-frequency transmitting array; 12. Medium-frequency transmitting array; 13. Compartment fairing. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-5 The present invention provides a technical solution: a lateral low-resistance wing-shaped multi-element acoustic array platform for UUV, which is composed of a wing compartment, a multi-element acoustic array frame, a wing fixing frame, a wing shell, a compartment fairing, a wing top cover, a floating body material, a watertight junction box, an electronic compartment, a non-acoustic sensor, a receiving array, a low-frequency transmitting array and an intermediate-frequency transmitting array. The multi-element acoustic array frame is fixed to the wing compartment by the wing fixing frame, the wing shell is installed on the wing shell reserved interface of the multi-element acoustic array frame, the wing top cover is installed above the wing shell, the compartment fairing is installed above the wing compartment, and the wing shell The front and rear cavities, and the cavity between the upper part of the wing compartment and the compartment fairing are filled with floating materials (the floating material is hard polyurethane foam, and the filling volume is determined by the weight of the platform in water and the weight of the installation array in water, which can ensure that the wing platform has zero buoyancy in water), a watertight junction box is set on the wing fixing frame, and the electronic compartment is set in the wing compartment. The non-acoustic sensor, receiving array, low-frequency transmitting array and medium-frequency transmitting array are respectively installed on the preset installation positions of the multi-acoustic array frame. The non-acoustic sensor, receiving array, low-frequency transmitting array and medium-frequency transmitting array are connected and communicated with the electronic compartment through the watertight junction box.

[0018] A multi-element acoustic matrix array frame is symmetrically arranged on both sides of the wing compartment section, and each multi-element acoustic matrix array frame is provided with corresponding mechanisms and device units.

[0019] The wing shell is made of carbon fiber material. The front end of the wing shell is retracted forward to the UUV compartment surface. At the same time, the maximum thickness of the two ends is greater than the thickness of the middle area close to the compartment. The size of the wing compartment matches the size of the UUV. The platform shape adopts a wing shape, which gradually decreases at both ends. The line shape is as shown in the schematic diagram, which can effectively reduce the resistance of the wing when moving in the water. The thickness of the two ends is slightly thicker than the middle, which increases the stability when moving in the water.

[0020] The wing shell with optimized linear shape is used to wrap the sound base array. The wing shell is made of carbon fiber, and its thickness is designed for sound transmission performance to ensure high sound transmission performance. The surface of the shell is painted to ensure its smoothness to minimize the flow noise caused by friction.

[0021] The low frequency transmitting array and the intermediate frequency transmitting array are respectively arranged at the two lateral ends of the multi-element acoustic base array frame, and the low frequency transmitting array and the intermediate frequency transmitting array are installed with the multi-element acoustic base array frame by means of soft connection to offset the acoustic signal distortion caused by the vibration of the base array frame.

[0022] Through this technical solution, the platform installation sequence adopts the form of separate installation of the platform body and the wing compartment and final closure: The platform first installs the acoustic array, and installs the acoustic transducer on the reserved interface of the multi-element acoustic array frame by soft connection. After the 48 yuan receiving transducer is installed, the multi-element acoustic array frame is installed together with the left and right wing shells. When installing the wing shell, the wing shell needs to be nested on the multi-element acoustic array frame as a whole, and then the low-frequency transmitting array and the medium-frequency transmitting array on both sides of the multi-element acoustic array frame are installed. After the low-frequency transmitting array and the medium-frequency transmitting array are fixed by soft connection, the screws on the outside of the wing shell are installed to fix the wing shell. A fully installed wing platform is formed.

[0023] Before installing the wing compartment, you need to install the connectors on the wing compartment and the internal junction box first. After the connectors and junction box are installed, they are installed together with the UUV compartment to complete the installation of the entire UUV.

[0024] Place the UUV on the fully installed wing platform through the positioning surface and positioning holes on the wing compartment, and fix it with the wing fixing frame. Connect the connectors on the wing compartment and the external watertight junction box, and fix the external watertight junction box. Finally, install the wing top cover and compartment air deflector on both sides, and fix them with the external screws of the wing top cover and compartment air deflector. At this point, the installation and integration of the entire platform is completed.

[0025] The beneficial effects of the present invention are: (1) The platform has a large installation area. The platform is designed to be flat with a large plane area, which provides a large space for installing the acoustic array. This solves the problem of small installation space for the acoustic array on the UUV body and also avoids the problems of poor follow-up and stability of the towed body during installation.

[0026] (2) The platform has good stability in water movement, low flow noise, and low movement resistance, ensuring that the platform has good follow-up performance.

[0027] (3) The array frame and transducer are installed in a flexible connection to ensure that the transmitted signal is not distorted.

[0028] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lateral low-drag wing-shaped multi-element acoustic array platform for UUV, characterized by: The invention comprises a wing compartment, a multi-element acoustic array frame, a wing fixing frame, a wing shell, a compartment air guide cover, a wing top cover plate, a floating material, a watertight junction box, an electronic compartment, a non-acoustic sensor, a receiving array, a low-frequency transmitting array and an intermediate-frequency transmitting array. The multi-element acoustic array frame is fixed to the wing compartment by a wing fixing frame, the wing shell is installed on a wing shell reserved interface of the multi-element acoustic array frame, the wing top cover plate is installed above the wing shell, the compartment air guide cover is installed above the wing compartment, the front and rear cavities of the wing shell and the cavity between the upper part of the wing compartment and the compartment air guide cover are filled with floating material, the watertight junction box is arranged on the wing fixing frame, the electronic compartment is arranged in the wing compartment, the non-acoustic sensor, the receiving array, the low-frequency transmitting array and the intermediate-frequency transmitting array are respectively installed on preset installation positions of the multi-element acoustic array frame, and the non-acoustic sensor, the receiving array, the low-frequency transmitting array and the intermediate-frequency transmitting array are connected and communicated with the electronic compartment through the watertight junction box.

2. A lateral low-drag wing-shaped multi-element acoustic array platform for UUV according to claim 1, characterized in that: A multi-element acoustic matrix array is symmetrically arranged on both sides of the wing compartment, and each multi-element acoustic matrix array is provided with corresponding mechanisms and device units.

3. The UUV lateral low-drag wing-shaped multi-element acoustic array platform according to claim 1, characterized in that: The wing shell is made of carbon fiber material.

4. The UUV lateral low-drag wing-shaped multi-element acoustic array platform according to claim 1, characterized in that: The front end of the wing shell is retracted forward to the UUV cabin surface, and the maximum thickness at both ends is greater than the thickness of the middle area close to the cabin.

5. The lateral low-drag wing-shaped multi-element acoustic array platform for UUV according to claim 4, characterized in that: The wing compartment dimensions match those of the UUV.

6. The UUV lateral low-drag wing-shaped multi-element acoustic array platform according to claim 1, characterized in that: The low-frequency transmitting array and the medium-frequency transmitting array are respectively arranged at two lateral ends of the multi-element acoustic base array frame.

7. The UUV lateral low-drag wing-shaped multi-element acoustic array platform according to claim 6, characterized in that: The low-frequency transmitting array and the intermediate-frequency transmitting array are installed with the multi-element acoustic base array frame in a soft connection manner.

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