Missile launching canister mooring film cover in two-section cover opening mode

Abstract

The invention discloses a missile launching canister mooring film cover in a two-section cover opening mode, which comprises an upper cover frame and a lower cover frame which are made of metal or nonmetal, a film cover body is arranged between the upper cover frame and the lower cover frame, the film cover body covers a launching channel before working, and a closed space is formed by the film cover body and a missile launching canister. The film cover body is made of a fiber reinforced resin composite material and is divided into two sections according to the area. Compared with the prior art, the thin film cover body of the mooring thin film cover is designed into two sections, and each section comprises the mooring structure, so that the two-section cover opening mode is achieved. When a missile is launched, the film cover body can be broken by a bullet or broken by high-pressure gas (or shock waves) in a launch canister, the cover body is opened in a two-section mode, interference between cover body fragments after the cover body is opened and protruding accessories outside the missile in the canister outlet process is avoided, and the cover body has a fragment mooring function after the cover body is opened. And the reliability and the safety of the missile launching process are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of missile launch safety, and particularly to a missile launch tube tethered film cover with a two-piece opening method. Background Art

[0002] Generally, the existing missile launch tube tethered film covers mainly adopt a four-piece opening form (such as a film-type sealing cover for a missile or rocket launch tube disclosed in CN117404959A, where a weakening groove is formed on the film cover body to reduce the impact force when the missile exits the tube, and it can rupture and unfold along a specific direction during missile launch). In the actual use of this opening design, although the cover is relatively easy to open, there are still the following deficiencies: 1. The cover is designed in a four-piece structure, and the number of fragments formed during the opening process is large, which leads to a high uncertainty during the splitting process of the cover. There is a risk of forming a different number of split openings during actual use. In actual tests, if a four-piece designed film cover forms a three-piece opening, that is, when any one piece does not open, it will cause a serious impact condition on the missile or radome during launch, and in severe cases, it can cause damage to the missile or radome, thus affecting the entire launch process and threatening the missile and its accessories to exit the tube; 2. Currently, missile launch box technology is gradually developing towards lightweight, integrated, and small-gap directions, which puts higher requirements on the launch space of the film cover with an opening function. The four-piece opening of the cover means that there need to be four tethering structures between the cover and the cover frame. During the structural design, the root positions of multiple tethering structures are easily occupied by the space of the launch channel. And there are multiple protruding structural accessories installed or connected outside the missile, such as adapters, folding rudders, cable covers, etc. These accessories are prone to spatial interference with the tethering root positions and fragments during the process of exiting the tube, causing damage to the accessories and affecting the safety of the missile exiting the tube. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the above-mentioned existing technologies and provide a missile launch tube tethered film cover with a two-piece opening method, which reduces the number of split pieces during the opening process of the film cover, reduces the uncertainty during the opening process, and at the same time provides more space positions for the missile and its accessories to exit the tube, greatly improving the passing performance during missile launch, and also improving the reliability and safety of missile launch, and solving various risks and deficiencies existing in the traditional tethered film cover during missile launch.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] The object of the present invention is to provide a tethered film cover for a missile launcher with a two-piece opening method. The tethered film cover for the missile launcher includes a cover frame and a film cover body. The cover frame includes an upper cover frame and a lower cover frame. The upper cover frame and the lower cover frame are both formed with a launch channel for the missile to pass through, and the positions of the launch channels of the upper cover frame and the lower cover frame are opposite. The film cover body is arranged between the upper cover frame and the lower cover frame. The film cover body covers the launch channels of the upper cover frame and the lower cover frame. The film cover body is divided into two pieces by region and has a function of tethering fragments after opening the cover.

[0006] Further, the upper cover frame is made of metal or non-metal; the lower cover frame is made of metal or non-metal.

[0007] Further, the film cover body is assembled and bonded with the upper cover frame and the lower cover frame through a sealing material and a sealing standard part.

[0008] Further, the sealing material is a sealant.

[0009] Further, the sealing standard part is a screw. The sealing standard part is sequentially connected to the upper cover frame, the film cover body, and the lower cover frame, and the upper cover frame, the film cover body, and the lower cover frame are bonded with a sealing material.

[0010] Further, the outer shape structure of the tethered film cover for the missile launcher can be a circular cover, a rectangular cover, or a polygonal cover.

[0011] Further, the film cover body is divided into two pieces by region: a flap A and a flap B.

[0012] Further, the tethered film cover for the missile launcher further includes a tethering structure. The tethering structure is arranged between the upper cover frame and the film cover body and between the lower cover frame and the film cover body. The flap A and the flap B are respectively provided with a tethering structure near the upper cover frame and the lower cover frame to ensure that the fragments do not fall off after opening the cover.

[0013] Further, the tethering structure is composed of a high-strength flexible material compounded in the film cover body and is connected to the upper cover frame and the lower cover frame through a standard part.

[0014] Further, the tethering structure can be a layered structure or a cord structure.

[0015] Further, the area ratios of the flap A and the flap B can be matched and designed according to the impact position of the missile and the positions of the accessories to be avoided.

[0016] Further, the area ratios of the flap A and the flap B in the film cover body are not limited to equal division, that is, S A :S B = 1:1.

[0017] Further preferably, the area ratio of the A flap to the B flap in the film cover body is 1:1.

[0018] Further, weakening grooves are formed on the film cover body; the weakening grooves are arranged between the A flap and the B flap, and / or the weakening grooves are arranged at the edges of the A flap and the B flap. Here, the edges of the A flap and the B flap refer to the edge portions of the A flap and the B flap that do not coincide with the upper cover frame and the lower cover frame, corresponding to the edge positions of the emission channels.

[0019] Further, the film cover body is made of a fiber-reinforced resin composite material, a foam material, an engineering plastic, etc.

[0020] Further, the cover frame is provided with standard part connection holes, so that standard parts can be inserted through the standard part connection holes and connected to the missile launch tube.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1) A tethered film cover for a missile launch tube with a two-flap opening method provided by the present technical solution. By designing the film cover into a two-flap opening form, on the one hand, the number of split flaps during the opening process of the film cover is reduced, and the uncertainty during the opening process is reduced; on the other hand, due to the reduction in the number of tethering structures, there is more position space for the external structural parts outside the missile to exit the tube, greatly improving the passing performance during missile launch, and also improving the reliability and safety of missile launch.

[0023] 2) A tethered film cover for a missile launch tube with a two-flap opening method provided by the present technical solution. By reducing the number of split flaps during the opening process of the film cover, while reducing the uncertainty during the opening process, there is more space position for the missile and its accessories to exit the tube. The passing performance during missile launch is greatly improved, and the reliability and safety of missile launch are also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a tethered film cover for a missile launch tube with a two-flap opening method in an embodiment of the present invention.

[0025] Figure 2 It is a schematic diagram of the film cover body structure of a tethered film cover for a missile launch tube with a two-flap opening method in an embodiment of the present invention.

[0026] Figure 3 It is a schematic diagram of the assembly structure of a tethered film cover for a missile launch tube with a two-flap opening method in an embodiment of the present invention.

[0027] The reference numerals in the figures are shown as:

[0028] 10. Upper cover frame; 20. Lower cover frame; 30. Thin film cover body; 40. Standard part connection hole; 50. Sealing standard part; 31. A flap; 32. B flap; 33. Weakening groove; 34. Mooring structure. Detailed implementation mode

[0029] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Features such as component models, material names, connection structures, control methods, etc. that are not clearly stated in this technical solution are regarded as common technical features disclosed in the prior art.

[0030] The present invention discloses a mooring thin film cover for a missile launch tube with a two - flap opening method, which includes an upper cover frame and a lower cover frame made of metal or non - metal. A thin film cover body is arranged between the upper cover frame and the lower cover frame. Before work, the thin film cover body covers the launch channel and forms a sealed space with the missile launch tube. The thin film cover body is made of fiber - reinforced resin composite material and is divided into two flaps according to regions. Compared with the prior art, the present invention realizes the two - flap opening method by designing the thin film cover body of the mooring thin film cover into two flaps and each flap contains a mooring structure. During missile launch, the thin film cover body can be pierced by the missile head or burst by high - pressure gas (or shock wave) in the launch tube, opening the cover in the form of two flaps, avoiding the interference between the broken pieces of the cover body after opening and the external protruding accessories of the missile during the process of exiting the tube, and the cover body has the function of mooring broken pieces after opening, greatly improving the reliability and safety of the missile launch process.

[0031] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] It should be noted that in the present invention, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "including", "comprising" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0033] Example 1

[0034] Reference Figures 1-3 As shown, this embodiment proposes a tethered film cover for a missile launch tube in a two-piece opening form, including a cover frame. The cover frame includes an upper cover frame 10 and a lower cover frame 20 made of metal or non-metal. Both the upper cover frame 10 and the lower cover frame 20 are formed with a launch channel for the missile to pass through, and the channel positions of the two are opposite. A film cover body 30 is arranged between the upper cover frame 10 and the lower cover frame 20. The film cover body 30 covers the launch channel, and the film cover body 30 is divided into two pieces by region. In specific implementation, the upper cover frame 10 and the lower cover frame 20 are made of metal or non-metal. Specifically, they can be made of materials such as aluminum alloy, ordinary steel, stainless steel, or non-metal. To ensure reliable connection between the upper cover frame 10 and the lower cover frame 20, connection holes for connecting the two are provided on the upper cover frame 10 and the lower cover frame 20. The number of these connection holes is multiple and they are evenly distributed on the upper cover frame 10 and the lower cover frame 20. The connection holes on the upper cover frame 10 and the lower cover frame 20 are arranged oppositely. Connection holes are also provided on the film cover body 30, and the connection holes on the film cover body 30 are arranged oppositely to the connection holes on the upper cover frame 10 and the lower cover frame 20. The connection holes cooperate with the sealing standard parts 50 for connecting the upper cover frame 10 and the lower cover frame 20, thereby realizing the fixed connection of the upper cover frame 10 and the lower cover frame 20. Specifically, the sealing standard parts 50 are sequentially connected to the connection holes on the upper cover frame 10, the connection holes on the film cover body 30, and the connection holes on the lower cover frame 20.

[0035] Both the upper cover frame 10 and the lower cover frame 20 are annular by themselves. The outer diameter of the upper cover frame 10 is smaller than the outer diameter of the lower cover frame 20. The channels formed inside the upper cover frame 10 and the lower cover frame 20 serve as the launch channels for the missile to pass through. In specific use, the missile and external accessories are launched from this launch channel. A film cover body 30 is arranged between the upper cover frame 10 and the lower cover frame 20, and the film cover body 30 covers the launch channel. The film cover body 30 is divided into two pieces by region. Therefore, the film cover is integrally arranged on the missile launch tube. Since the film cover is opened in a two-piece manner, it provides a good space avoidance effect for the missile and external accessories when passing through the launch channel, improving the safety of missile launch.

[0036] The film cover body 30 is divided into two pieces by region, including lobe A 31 and lobe B 32. The film cover body 30 is made into a two-piece structure, including lobe A 31 and lobe B 32. The distribution angle of lobe A 31 and lobe B 32 on the film cover body 30 is not limited to the horizontal and vertical position distribution as Figure 2 shown. In specific use, the splitting angle of the film cover 30 can be matched and designed according to the distribution positions of the missile and its accessories. As Figure 2As shown, the area ratio of flap A 31 to flap B 32 in the thin film cover 30 is 1:1, but the area ratio of flap A 31 to flap B 32 in the thin film cover 30 is not limited to S A :S B = 1:1, and it can be designed according to the positions of the missile and the accessories to be avoided.

[0037] Weakening grooves 33 are formed on the thin film cover 30. On the one hand, it reduces the bursting force or bursting pressure when the missile exits the tube; on the other hand, when the thin film cover is opened, the cover body can be opened in two flaps along the weakening grooves 33 in a pre-designed form. As Figure 2 shown, in this embodiment, the weakening grooves 33 pass through the center of the launch channel and are arranged along the diameter of the launch channel. The weakening grooves 33 are also provided at the edges of flap A 31 and flap B 32. The edges of flap A 31 and flap B 32 here refer to the edge parts of flap A 31 and flap B 32 that do not coincide with the upper cover frame 10 and the lower cover frame 20. This edge part corresponds to the edge position of the launch channel. However, in specific implementation, the structure that plays a weakening role is not limited to the shape as Figure 2 shown.

[0038] There are connection holes 40 on the overall cover frame formed by the upper cover frame 10 and the lower cover frame 20. The thin film cover as a whole is placed into standard parts through these connection holes 40 to be connected to the launch tube. As Figure 3 shown, the connection holes 40 penetrate through the lower cover frame 20, are arranged outside the upper cover frame 10, and are evenly distributed on the lower cover frame 20. However, the arrangement of the connection holes 40 is not limited to the form as Figure 3 shown. In specific use, standard parts are inserted into the connection holes 40 and then connected to the end of the missile launch tube, so as to fixedly connect the overall cover frame formed by the upper cover frame 10 and the lower cover frame 20 to the launch tube. The number of connection holes 40 is multiple.

[0039] The thin film cover 30 is connected to the upper cover frame 10 and the lower cover frame 20 in the form of a combination of a sealing material and a sealing standard part 50. In order to make the connection part between the upper cover frame 10, the lower cover frame 20 and the thin film cover 30 have a good sealing function, the above-mentioned combination form of the sealing material and the sealing standard part 50 is used for connection. The specific connection method is: the sealing material is sealant, the sealing standard part 50 is a screw, the sealing standard part 50 is sequentially threadedly connected to the upper cover frame 10, the thin film cover 30, and the lower cover frame 20, and the upper cover frame 10, the thin film cover 30, and the lower cover frame 20 are bonded with the sealing material.

[0040] The tethered film cover of the missile launch tube further includes a tethering structure 34; the tethering structure 34 is provided between the upper cover frame 10 and the film cover body 30 and between the lower cover frame 20 and the film cover body 30; the A flap 31 and the B flap 32 are respectively provided with the tethering structure 34 near the upper cover frame 10 and the lower cover frame 20 to ensure that the fragments do not fall off after the cover is opened. The tethering structure 34 is composed of a high-strength flexible material compounded in the film cover body 30, and the tethering structures 34 provided on the A flap 31 and the B flap 32 are respectively connected to the upper cover frame 10 and the lower cover frame 20 through standard parts. The tethering structure 34 can be a layered structure or a cord structure, etc., but in specific implementation, the structure of the tethering structure 34 is not limited to a layered structure or a cord structure.

[0041] The weakening groove 33 is provided avoiding the tethering structure 34.

[0042] By setting parameters such as the distribution angle and area ratio of the A flap 31 and the B flap 32 on the film cover body 30, during the missile launch process, the cover fragments and the positions of the tethering roots can well avoid the space during the passing process of the missile and its accessories, so as to improve the safety and reliability of the missile launch.

[0043] Embodiment 2

[0044] This embodiment provides a tethered film cover of a missile launch tube with a two-flap opening form, which is basically the same as Embodiment 1. The difference of this embodiment lies in:

[0045] The area ratio of the A flap 31 and the B flap 32 to the film cover body 30 is S A :S B = 2:1 to meet the missile launch systems with some eccentric structures.

[0046] Embodiment 3

[0047] This embodiment provides a tethered film cover of a missile launch tube with a two-flap opening form, which is basically the same as Embodiment 1. The difference of this embodiment lies in:

[0048] The upper cover frame 10, the lower cover frame 20 and the film cover body 30 are all set into structures such as rectangles, polygons, ellipses, etc. to meet the use of some missile launch boxes.

[0049] Embodiment 4

[0050] This embodiment provides a tethered film cover of a missile launch tube with a two-flap opening form, which is basically the same as Embodiment 1. On the basis of Embodiment 1, this embodiment further includes the following settings:

[0051] The total number of the above connection holes 40 and sealing standard parts 50 is 30. Among them, there are 10 connection holes 40 evenly distributed on the lower cover frame 20; there are 20 sealing standard parts 50 evenly distributed on the upper cover frame 10 and the lower cover frame 20.

[0052] The above description of the embodiments is provided to enable those of ordinary skill in the art to understand and use the invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments, and all improvements and modifications made by those skilled in the art without departing from the scope of the present invention according to the disclosure of the present invention should be within the protection scope of the present invention.

Claims

1. A tethered thin film cover for a missile launcher tube with a two-piece opening method, characterized in that, The tethered film cover of the missile launcher tube includes a cover frame and a film cover body (30); The cover frame includes an upper cover frame (10) and a lower cover frame (20); Both the upper cover frame (10) and the lower cover frame (20) are formed with launch channels for the missile to pass through, and the positions of the launch channels of the upper cover frame (10) and the lower cover frame (20) are opposite; The film cover body (30) is disposed between the upper cover frame (10) and the lower cover frame (20); The film cover body (30) covers the launch channels of the upper cover frame (10) and the lower cover frame (20); The film cover body (30) is divided into two petals by region and has a debris tethering function after the cover is opened.

2. The tethered film cover of a missile launcher tube with a two-piece opening method according to claim 1, characterized in that, The upper cover frame (10) is made of metal or non-metal; The lower cover frame (20) is made of metal or non-metal.

3. The tethered film cover of the missile launcher with a two-piece opening method according to claim 1, characterized in that, The film cover body (30) is connected to the upper cover frame (10) and the lower cover frame (20) by a sealing material and a sealing standard part (50).

4. The tethered film cover of the missile launcher with a two-piece opening method according to claim 1, characterized in that, The outer shape structure of the tethered film cover of the missile launcher tube is a circular cover, a rectangular cover or a polygonal cover.

5. The tethered film cover of a missile launch tube with a two-piece opening method according to claim 1, characterized in that, The film cover body (30) is divided into two petals by region: petal A (31) and petal B (32); The tethered film cover of the missile launcher tube further includes a tethering structure (34); The tethering structure (34) is disposed between the upper cover frame (10) and the film cover body (30) and between the lower cover frame (20) and the film cover body (30); Tethering structures (34) are respectively arranged at the positions where the petal A (31) and the petal B (32) are close to the upper cover frame (10) and the lower cover frame (20) to ensure that the fragments do not fall off after the cover is opened.

6. The tethered film cover of the missile launcher with a two-piece opening method according to claim 5, characterized in that The tethering structure (34) is formed by a high-strength flexible material compounded in the film cover body (30) and is connected to the cover frame by a standard part.

7. The tethered film cover of the missile launcher with a two-piece opening method according to claim 5, characterized in that, The area ratio of the petal A (31) and the petal B (32) in the film cover body (30) is 1:

1.

8. The tethered film cover of the missile launcher with a two-piece opening method according to claim 5, characterized in that, Weakening grooves (33) are formed on the film cover body (30); The weakening grooves (33) are disposed between the petal A (31) and the petal B (32), and / or the weakening grooves (33) are disposed at the edges of the petal A (31) and the petal B (32).

9. The tethered film cover of the missile launcher with a two-piece opening method according to claim 1, characterized in that, The film cover body (30) is made of a fiber-reinforced resin composite material, a foam material or an engineering plastic.

10. The tethered film cover for a missile launcher tube with a two-piece opening method according to claim 1, wherein, The cover frame is provided with standard part connection holes (40), and the standard part connection holes (40) are used to place standard parts to connect to the missile launcher tube.

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