Metal-cover-free missile wall cable and individual missile and missile system thereof

Abstract

The invention provides a metal-cover-free elastic wall cable and an individual guided missile and guided missile system thereof, and the elastic wall cable is of a flat strip-shaped structure, and comprises a conductive core wire layer which is formed by arranging a plurality of insulated wires side by side or in a twisting manner from inside to outside in sequence; the insulating coating layer partially or completely coats the conductive core wire layer; the electromagnetic shielding and protecting outer layer completely coats the outer part of the insulating coating layer; and the elastic wall cable is directly fixed on the outer surface of the engine compartment through a bonding layer. According to the invention, a raised metal protective cover is abandoned, and the flat cable is directly attached to the wire passing groove preset in the surface of the projectile body, so that the outer surface of the cable is basically flush with the engine compartment shell. The fairness of the aerodynamic shape of the missile body is greatly guaranteed, the flight resistance is reduced, an asymmetric flow field caused by sudden change of the shape is avoided, and therefore the flight stability and the control precision of the missile are improved.

Description

Technical Field

[0001] This invention relates to the technical field of man-portable guided cables, and more particularly to a metal-free shielded missile wall cable for man-portable guided missiles. Background Technology

[0002] Missile wall cables are critical connecting components in missile electrical systems, used to transmit power and control signals between different sections of the missile body. In the field of man-portable guided munitions, there are extremely stringent requirements regarding the weapon's weight, size, aerodynamic shape, and cost.

[0003] Currently, missile wall cables are mainly arranged externally and covered with a metal protective cover. This method has significant drawbacks: 1. It disrupts the aerodynamic shape: the protruding metal cover affects flight stability; 2. It increases weight and complexity: it adds an extra 50-100 grams and complicates the launch tube design; 3. It poses assembly and reliability risks. Summary of the Invention

[0004] Based on the above problems, the present invention addresses how to eliminate the metal cover and achieve reliable external laying of cables, thus resolving the conflict between the external protection requirements of cables and the requirements for lightweight and low-complexity overall structure.

[0005] To achieve the above objectives, the present invention provides a metal-free missile wall cable for man-portable missiles, disposed outside the engine compartment, wherein the missile wall cable has a flat strip structure, comprising, from the inside to the outside:

[0006] The conductive core layer is composed of multiple insulated wires arranged side by side or twisted together;

[0007] An insulating coating layer that partially or completely covers the conductive core wire layer;

[0008] An electromagnetic shielding and protective outer layer completely covers the outside of the insulating covering layer;

[0009] The spring-loaded cable is directly fixed to the outer surface of the engine compartment via an adhesive layer.

[0010] Furthermore, the conductor of the insulated wire is a silver-plated copper core, and the insulation method of the insulated wire is a polytetrafluoroethylene film wrapped around the silver-plated copper core.

[0011] Furthermore, the insulating covering layer is a high-temperature resistant polyimide insulating tape, which is wrapped and covered in an intermittent or continuous manner.

[0012] Furthermore, the high-temperature resistant polyimide insulating tape has a wrapping interval of 20-30mm and a width of 18mm.

[0013] Furthermore, the electromagnetic shielding and protective outer layer is a copper-nickel plated polyester fiber conductive cloth.

[0014] Furthermore, the overall thickness of the spring-loaded cable is no greater than 2.8 mm, and the width is no greater than 10 mm.

[0015] A man-portable missile includes a metal-free shielded wall cable as described in any of the preceding claims. The engine compartment housing is provided with a cable groove for accommodating the wall cable. The width of the cable groove is adapted to the width of the wall cable, and the groove depth is adapted to the thickness of the wall cable, such that after the wall cable is fixed, its outer surface is flush with or slightly lower than the outer surface of the engine compartment housing.

[0016] A man-portable missile system includes: a man-portable missile as described above; and a launch tube, the inner wall of which is provided with an axial cable groove penetrating the tube body corresponding to the position of the missile wall cable on the man-portable missile, for accommodating the missile wall cable during loading.

[0017] The beneficial effects of this invention are as follows:

[0018] This invention eliminates the need for a protruding metal protective cover, instead using a flat cable directly mounted in a pre-designed groove on the missile body surface, making the cable's outer surface essentially flush with the engine compartment casing. This greatly ensures the smoothness of the missile's aerodynamic shape, reduces flight drag, and avoids asymmetric flow fields caused by abrupt changes in shape, thereby improving the missile's flight stability and control precision.

[0019] This invention utilizes lightweight composite cable and a thin layer of adhesive for fixation. In the face of stringent requirements for individual soldier weapon weight control, this weight reduction makes a significant contribution, directly improving weapon portability and the mobility of combat personnel. Attached Figure Description

[0020] Explanation of reference numerals in the attached figures:

[0021] Figure 1 This is a schematic cross-sectional view of the launch tube of a missile system that is paired with a man-portable missile and contains a metal-free shielded missile wall cable, according to the present invention.

[0022] Figure 2 This is a partial cross-sectional view of the launch tube of the missile system of the present invention;

[0023] Figure 3 This is a schematic diagram of the docking assembly of the servo compartment, the missile wall cable, and the engine compartment of a man-portable missile containing a metal-free shielded missile wall cable according to the present invention.

[0024] Figure 4 This is a schematic diagram of a spring-loaded cable.

[0025] Figure 5 This is a schematic diagram of the cross-section of the spring-loaded cable.

[0026] 1. Metal-free shielded bulletproof cable; 11. Insulated wire; 2. Insulation sheath layer; 3. Electromagnetic shielding and protective outer layer; 4. Adhesive layer; 5. Engine compartment; 51. Cable tray; 52. Servo compartment; 6. Launch tube; 61. Axial cable tray; 7. Electrical connector. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art. The terms "comprising" and similar expressions used herein mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but does not exclude other elements or objects. Unless otherwise specified, "connection" herein can refer to a direct connection or an indirect connection, i.e., a connection through an intermediate object.

[0028] like Figures 1 to 5 As shown, a metal-free spring-wall cable includes:

[0029] Metal-free spring-loaded cable 1, which has a flat ribbon structure. The cable, from the inside out, includes: a conductive core layer, which is composed of multiple insulated wires 11 arranged side by side or twisted together;

[0030] Insulating layer 2, partially or completely covering the conductive core wire layer;

[0031] The electromagnetic shielding and protective outer layer 3 completely covers the outside of the insulating covering layer 2. The spring-loaded cable is directly fixed to the outer surface of the engine compartment 5 through the adhesive layer 4.

[0032] This invention adopts a flat structure without a metal shield, eliminating the traditional metal cable shield. Without reducing the protective performance, it effectively reduces the overall weight of the man-portable missile (by about 50-100g) and solves the problems of incomplete aerodynamic shape and difficulty in adapting the launch tube caused by the metal shield.

[0033] In a preferred embodiment, the conductor of the insulated wire 11 is a silver-plated copper core, and its insulation layer is formed by wrapping a polytetrafluoroethylene film around the silver-plated copper core. Specifically, the insulated wire 11 can be an AFR-250 type wire with a cross-sectional area of ​​0.15 mm², utilizing its excellent physical properties to ensure the conductivity stability and temperature resistance of the metal-free shielded missile wall cable 1 in extreme environments such as man-portable missile flight.

[0034] In a preferred embodiment, the insulating sheath 2 is a high-temperature resistant polyimide insulating tape. It is wrapped around the core layer in an intermittent or continuous manner, providing excellent interlayer insulation and enhancing the tensile strength of the cable.

[0035] In a preferred embodiment, the high-temperature resistant polyimide insulating tape is wrapped at intervals of 20-30 mm and has a width of 18 mm. This specific size of the wrapping ensures insulation strength while maintaining the good flexibility of the metal-free shell-walled cable 1, facilitating its installation within the cable tray 51 on the surface of the engine compartment 5.

[0036] In a preferred embodiment, the electromagnetic shielding and protective outer layer 3 is a copper-nickel plated polyester fiber conductive cloth. This material replaces the traditional rigid metal shielding mesh or shielding cover, achieving efficient electromagnetic shielding while greatly reducing the system weight, and it has good flatness with a maximum thickness of no more than 2.8 mm.

[0037] In a preferred embodiment, the spring-loaded cable assembly, such as Figure 4 As shown, this is a cable assembly with an electrical connector 7 pre-fabricated at only one end, and the total cable length is 500mm.

[0038] In a preferred embodiment, the other end of the metal-free shell-mounted cable 1 is a distributed strand. During installation, this strand is threaded into the interior of the servo compartment 8 and secured as necessary according to the compartment layout. The ends of its wires are welded or plugged into corresponding points of the servo control system, thereby completing the final electrical path from the shell-mounted cable to the servo actuator.

[0039] In a preferred embodiment, combined with Figure 2 As shown, after the engine compartment 5 and the servo compartment 8 complete the mechanical docking, the metal-free shield wall cable 1 is laid along the cable groove 51 on the surface of the engine compartment 5, and the electrical connector 7 at its front end extends into and is fixed in the servo compartment 52, thereby forming a complete electrical connection link from the flight control compartment (not shown in the figure) to the servo compartment 8 through this shield wall cable.

[0040] In a preferred embodiment, the adhesive layer 4 is made of acrylic foam double-sided tape. For example, using a tape with a thickness of 0.8 mm, its excellent adhesive strength and shear resistance ensure that the metal-free shield cable 1 can still be firmly attached to the surface of the engine compartment 5 under the conditions of high-speed missile flight and high-temperature engine operation.

[0041] In a preferred embodiment, such as Figure 2 and Figure 5As shown, the engine compartment 5 of the man-portable missile is provided with a cable channel 51 for accommodating the missile wall cable. The width of the cable channel 51 is adapted to the width of the metal-free shield missile wall cable 1, and the depth of the channel is adapted to the thickness of the metal-free shield missile wall cable 1, so that the outer surface of the metal-free shield missile wall cable 1 after being fixed is flush with or slightly lower than the outer surface of the engine compartment 5, thereby maintaining the missile's excellent aerodynamic shape.

[0042] In a preferred embodiment, such as Figure 1 As shown, the man-portable missile system includes a launch tube 6, whose inner wall has an axial cable groove 61 that passes through the tube body at the position corresponding to the metal-free missile wall cable 1. During loading and launch, the cable groove of the launch tube 6 provides a space for the missile wall cable, avoiding frictional interference between the cable and the tube wall and reducing launch resistance.

[0043] The above are merely specific embodiments of this application, but the protection scope of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A metal-free shielded missile wall cable, arranged outside the engine compartment, characterized in that, The spring-loaded cable has a flat, strip-shaped structure, which includes, from the inside out: The conductive core layer is composed of multiple insulated wires arranged side by side or twisted together; An insulating coating layer that partially or completely covers the conductive core wire layer; An electromagnetic shielding and protective outer layer completely covers the outside of the insulating covering layer; The spring-loaded cable is directly fixed to the outer surface of the engine compartment via an adhesive layer.

2. The metal-free sheathed spring-walled cable according to claim 1, characterized in that, The conductor of the insulated wire is a silver-plated copper core, and the insulation method of the insulated wire is a polytetrafluoroethylene film wrapped around the silver-plated copper core.

3. The metal-free sheathed spring-walled cable according to claim 1, characterized in that, The insulating coating layer is a high-temperature resistant polyimide insulating tape, which is wrapped and covered in an intermittent or continuous manner.

4. The metal-free sheathed spring-walled cable according to claim 3, characterized in that, The high-temperature resistant polyimide insulating tape has a wrapping interval of 20-30mm and a width of 18mm.

5. The metal-free sheathed spring-walled cable according to claim 1, characterized in that, The electromagnetic shielding and protective outer layer is made of polyester fiber copper-nickel plated conductive cloth.

6. The metal-free sheathed spring-walled cable according to claim 1, characterized in that, The overall thickness of the spring-loaded cable is no more than 2.8 mm and the width is no more than 10 mm.

7. A man-portable missile, characterized in that, The device includes a metal-free shielded ballistic cable as described in any one of claims 1 to 6, wherein the housing of the engine compartment is provided with a cable groove for accommodating the ballistic cable, the width of the cable groove being adapted to the width of the ballistic cable, and the groove depth being adapted to the thickness of the ballistic cable, such that after the ballistic cable is fixed, its outer surface is flush with or slightly lower than the outer surface of the housing of the engine compartment.

8. A man-portable missile system, characterized in that, include: The man-portable missile as described in claim 7 or 8; The launch tube, whose inner wall corresponds to the position of the missile wall cable on the man-portable missile, is provided with an axial cable groove that runs through the tube body to accommodate the missile wall cable during loading.

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