A transverse low-resistance airfoil type multi-element acoustic array platform for uuv

Abstract

The present application relates to the technical field of UUV sound array platform, and especially relates to a UUV transverse low-resistance wing type multi-element sound array platform, a sound base array platform is installed on a UUV, and a wing line shape is designed to be contracted to a UUV cabin section surface at a front end, the present application guarantees better stability and follow-up performance when the platform moves in water, reduces flow noise, and a soft connection form is adopted between a base array frame and a sound array, so that the transmission sound signal is not distorted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of UUV acoustic array platform, and particularly relates to a transverse low-resistance wing type multi-element acoustic array platform for UUV. BACKGROUND

[0002] The research and development of unmanned underwater vehicle (UUV) has a history of several decades, and UUVs are now widely used in the field of ocean, and are used for various purposes, such as ocean scientific investigation, military investigation, target detection, seabed topography investigation, and ocean environment investigation. The acoustic platform installed on the UUV requires characteristics such as attitude stability, small flow resistance, small flow noise, and good sound transmission performance.

[0003] In combination with the characteristics that the radiation surface of the acoustic array is usually a long rectangle with a wide transverse direction, a horizontal wing line type is used to reduce the resistance during movement and ensure the following performance during movement.

[0004] Currently, the existing UUV acoustic array platform is mostly suspended on the side, and the installation area of the acoustic array is small. The suspension of the towed body can increase the area of the acoustic array, but the stability and following performance of the towed body are poor. The installation on the side of the UUV and the suspension of the towed body are mainly installed on the side of the UUV. The installation area of this scheme is limited, the array direction is difficult to be perpendicular to the downward direction, and it is difficult to ensure good following performance and stability. SUMMARY

[0005] In view of the deficiencies in the prior art, the purpose of the present application is to provide a transverse low-resistance wing type multi-element acoustic array platform for UUV.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a transverse low-resistance wing type multi-element acoustic array platform for UUV, which is composed of a wing cabin section, a multi-element acoustic array frame, a wing fixing frame, a wing shell, a cabin section fairing, a wing top cover plate, a float material, a watertight junction box, an electronic cabin, a non-acoustic sensor, a receiving array, a low-frequency transmitting array, and a medium-frequency transmitting array. The multi-element acoustic array frame is fixed on the wing cabin section 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 plate is installed above the wing shell. The cabin section fairing is installed above the wing cabin section. The front and rear cavities of the wing shell and the cavity between the upper part of the wing cabin section and the cabin section fairing are filled with the float material. The watertight junction box is arranged on the wing fixing frame. The electronic cabin is arranged in the wing cabin section. The non-acoustic sensor, the receiving array, the low-frequency transmitting array, and the medium-frequency transmitting array are respectively installed on the preset installation positions of the multi-element acoustic array frame. The non-acoustic sensor, the receiving array, the low-frequency transmitting array, and the medium-frequency transmitting array are connected and communicated with the electronic cabin through the watertight junction box.

[0007] In some embodiments, two multi-element acoustic array frames are symmetrically arranged on both sides of the wing cabin section, and each multi-element acoustic array frame is provided with corresponding mechanisms and device units.

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

[0009] In some embodiments, the front end of the wing shell is retracted to the UUV cabin section surface, and the maximum thickness of the transverse two ends is greater than the thickness of the middle region close to the cabin section.

[0010] In some embodiments, the size of the wing cabin section matches the size of the UUV.

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

[0012] In some embodiments, the low-frequency transmitting array and the medium-frequency transmitting array are installed in a soft connection mode between the multi-element acoustic array frame.

[0013] Compared with the prior art, the beneficial effects of the present application are: a transverse low-resistance wing type multi-element acoustic array platform is designed, the platform has a large transverse space, and a smooth transition is adopted between the platform and the relatively flat (occupying less vertical space) multi-element acoustic array, the front end is smoothly connected to the cabin section, so that the resistance generated by the platform during movement is small, and the platform has good follow-up performance. The platform is installed in a fixed manner, the front end of the wing is retracted to the UUV cabin section surface, and the maximum thickness of the transverse two ends is slightly greater than the thickness of the middle region close to the cabin section, which better ensures the stability during movement in water, so that the platform has good hydrodynamic performance during rotation with the UUV, the attitude is stable, the flow noise is small, and the platform does not tilt or roll. The transducer is installed in a soft connection mode, and the transmitted signal is not distorted.

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

[0015] Figure 1 The system schematic diagram of the present application is shown in the figure;

[0016] Figure 2 The top view of the installation platform is shown in the figure;

[0017] Figure 3 The internal top view of the installation platform is shown in the figure;

[0018] Figure 4 The internal isometric view of the installation platform is shown in the figure

[0019] Figure 5 Figure 1 is a schematic diagram of the wing shell line (right half);

[0020] Figure 1 is a schematic diagram of the wing shell line (right half); DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] Please refer to Figures 1-5 The present application provides a technical solution: a transverse low-resistance wing type multi-element acoustic array platform for UUV, which is composed of a wing cabin section, a multi-element acoustic array frame, a wing fixing frame, a wing shell, a cabin section fairing, a wing top cover plate, a floating material, a watertight junction box, an electronic cabin, a non-acoustic sensor, a receiving array, a low-frequency transmitting array and a medium-frequency transmitting array. The multi-element acoustic array frame is fixed on the wing cabin section 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 plate is installed above the wing shell. The cabin section fairing is installed above the wing cabin section. The front and rear cavities of the wing shell and the cavity between the upper part of the wing cabin section and the cabin section fairing are filled with the floating material (the floating material is hard polyurethane foam, and the filling volume is determined comprehensively according to the water weight of the platform and the water weight of the installed array, which can ensure that the wing platform has zero buoyancy in water). The watertight junction box is arranged on the wing fixing frame. The electronic cabin is arranged in the wing cabin section. The non-acoustic sensor, the receiving array, the low-frequency transmitting array and the medium-frequency transmitting array are respectively installed on the preset installation positions of the multi-element acoustic array frame. The non-acoustic sensor, the receiving array, the low-frequency transmitting array and the medium-frequency transmitting array are connected and communicated with the electronic cabin through the watertight junction box.

[0023] One multi-element acoustic array frame is symmetrically arranged on each side of the wing cabin section. Each multi-element acoustic array frame is provided with corresponding mechanisms and device units.

[0024] The wing shell is made of carbon fiber material, the front end of the wing shell is retracted to the UUV cabin section surface, the maximum thickness of the transverse two ends is greater than the thickness of the middle region close to the cabin section, the wing cabin section size is matched with the UUV size, the platform shape adopts a wing shape, the two ends are gradually reduced, and the line type is shown in the schematic diagram, so that the resistance of the wing in water movement can be effectively reduced. The thickness of the two ends is slightly thicker than the middle, so that the stability in water movement is increased.

[0025] The wing shell with an optimized line type is used for wrapping the sound base array frame. The wing shell is made of carbon fiber material, the thickness is designed according to the sound transmission performance, and high sound transmission performance is ensured. The outer surface of the shell is painted or treated by other means to ensure smoothness, so as to reduce the flow noise generated by friction as much as possible.

[0026] The low-frequency transmitting array and the medium-frequency transmitting array are arranged at the transverse two ends of the multi-element sound base array frame respectively, and the low-frequency transmitting array and the medium-frequency transmitting array are installed in a soft connection mode between the multi-element sound base array frame, so as to offset the sound signal distortion caused by the vibration of the base array frame.

[0027] According to the technical scheme, the installation sequence of the platform is in the form of separate installation of the platform main body and the wing cabin section and final folding:

[0028] Firstly, the sound base array is installed, the sound transducer is installed on the reserved interface of the multi-element sound base array frame in a soft connection mode. After the installation of the 48-element receiving transducer is completed, the multi-element sound base array frame and the left and right wing shells are installed together. When the wing shell is installed, the wing shell is nested on the multi-element sound base array frame as a whole, then the low-frequency transmitting array and the medium-frequency transmitting array on the two sides of the multi-element sound base array frame are installed, after the low-frequency transmitting array and the medium-frequency transmitting array are fixed through the soft connection, the screws outside the wing shell are installed, and the wing shell is fixed. The wing platform is formed.

[0029] Before the wing cabin section is installed, the connector on the wing cabin section and the internal terminal box need to be installed, after the installation of the connector and the terminal box is completed, the cabin section of the UUV is installed together, and the installation of the entire UUV is completed.

[0030] The UUV is placed on the completely installed wing platform through the positioning surface and the positioning hole on the wing cabin section, and is fixed by using the wing fixing frame. The connector on the wing cabin section and the external water-tight terminal box is connected, and the external water-tight terminal box is fixed. Finally, the wing top cover plates on the two sides and the cabin section fairing are installed, and are fixed by using the external screws of the wing top cover plates and the cabin section fairing. Thus, the installation and integration of the entire platform are completed.

[0031] The beneficial effects of the present application are:

[0032] (1) Large platform installation area. The platform is designed to be flat, with a large planar area, and can install a large acoustic array space, solving the problem of small acoustic array installation space of the UUV body, and avoiding the problems of poor installation towbody followability and poor stability.

[0033] (2) Good stability in water movement, small flow noise, small movement resistance, ensuring good followability of the platform.

[0034] (3) The base array frame and the transducer are installed in a soft connection form, ensuring that the transmission signal is not distorted.

[0035] The above examples only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

[0036] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A transversely low-drag airfoil multi-element acoustic array platform for a UUV, characterized by: The system comprises a wing section, a multi-element acoustic array, a wing mounting frame, a wing shell, a section fairing, a top wing cover, floatation material, a watertight junction box, an electronics compartment, non-acoustic sensors, a receiving array, a low-frequency transmitting array, and a medium-frequency transmitting array. The multi-element acoustic array is fixed to the wing section by the wing mounting frame. The wing shell is installed on a pre-reserved interface of the multi-element acoustic array. An optimized wing shell shape is used to enclose the multi-element acoustic array. The top wing cover is installed above the wing shell, and the section fairing is installed above the wing section. The front and rear cavities of the wing shell, and the cavity between the upper part of the wing section and the section fairing, are filled with floatation material. The watertight junction box is located on the wing mounting frame, and the electronics compartment is located inside the wing section. Non-acoustic sensors, a receiving array, and a low-frequency transmitting array are also present. The low-frequency and intermediate-frequency transmission arrays are respectively installed in the preset mounting positions of the multi-element acoustic base array. The non-acoustic sensors, receiving array, low-frequency transmission array, and intermediate-frequency transmission array are connected to the electronics compartment for communication through a watertight junction box. A multi-element acoustic base array is symmetrically arranged on both sides of the wing section. Each multi-element acoustic base array is equipped with corresponding mechanisms and device units. The wing shell is made of carbon fiber. The front end of the wing shell is tapered forward to the surface of the UUV compartment. At the same time, the maximum thickness at both ends of the lateral direction is greater than the thickness of the middle area near the compartment. The size of the wing section matches the size of the UUV. The low-frequency and intermediate-frequency transmission arrays are respectively located at the two ends of the multi-element acoustic base array. The low-frequency and intermediate-frequency transmission arrays are installed with the multi-element acoustic base array using a soft connection method.

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