A reverse initiation multi- shaped charge warhead

Abstract

The application discloses a reverse initiation type multi-explosive-forming projectile combat unit. The application is provided with a detonating head at the front end of a charge, and the detonating energy of a fuse is transmitted to the detonating head by using a detonating cord A, a booster and a detonating cord B, so that the reverse multi-point simultaneous initiation is realized. Meanwhile, a supporting structure composed of an initiation base plate, a supporting clamping plate and a connecting cover plate is designed, so that the blocking interference effect of the fuse system and the initiation device on the shaped charge penetrator is effectively reduced while ensuring the smooth reverse initiation. The combat unit has a compact structure, and is convenient to disassemble, maintain, replace, handle, and update. The application reduces the overall length of the combat unit, realizes the good forming of the MEFP under a small charge height, promotes the miniaturization of the intelligent cruise missile ammunition, and improves the combat effectiveness of the ammunition weapon system.

Description

Technical Field

[0001] This invention relates to the field of ammunition technology, and specifically to a reverse-detonation type multiple explosive forming projectile warhead. Background Technology

[0002] Multiple explosively formed projectile (MEPG) warheads are a new type of highly efficient shaped charge warhead containing multiple shaped charge liner. During deployment, they can form multiple explosively formed projectiles, resulting in significantly higher destructive power compared to traditional MEPG warheads. MEPG warheads are primarily used against armed helicopters and clustered armored targets, and are now applied in smart mines and terminally guided munitions weapon systems. They represent a rapidly developing warhead type with broad application prospects in recent years.

[0003] In recent years, advanced munitions and weapon systems such as smart loitering munitions and networked munitions have been continuously developing towards miniaturization. The overall lightweighting and miniaturization of weapon systems have placed strict dimensional constraints on warhead design. Traditional multi-explosive forming (MEFP) warheads require a relatively high charge height to ensure proper forming, which cannot meet the demands of munition miniaturization. Therefore, the development of initiation devices suitable for lightweight and miniaturized munition warheads is urgently needed.

[0004] Reverse initiation is a promising and advantageous initiation method for shaped charge warheads, especially under strict design constraints on warhead dimensions. Related research shows that shaped charge warheads with small aspect ratios using this initiation method can still form slender, high-speed jets, possessing excellent armor-piercing capabilities while reducing warhead mass. Recent studies indicate that reverse initiation applied to MEFP warheads, even with a small aspect ratio, can still form high-speed, high-quality explosively formed projectiles. However, reverse initiation typically requires multi-point synchronous detonation at the warhead tip, while minimizing the obstruction and interference effects of the fuze system and initiation device on the shaped charge penetrator, significantly increasing the difficulty of optimizing the warhead structure. Therefore, reverse initiation has not yet been widely applied in the field of warheads. The engineering implementation of reverse initiation is even more challenging for multi-shaped charge warheads with multi-explosive-formed projectiles. Summary of the Invention

[0005] In view of this, the present invention provides a reverse-initiation type multiple explosively formed projectile warhead, which utilizes the engineering application of reverse initiation technology to achieve good MEFP formation at a relatively small charge height, promotes the miniaturization of intelligent loitering munitions, and improves the combat effectiveness of munition weapon systems.

[0006] The reverse-initiation type multi-explosive forming projectile warhead of the present invention includes: a fuse, a charge, a casing, a main charge liner, a secondary charge liner, an initiation base plate, a support clamp, a connecting cover plate, a detonating charge, an end cap, a detonating cord B, a detonating head, and a detonating cord A.

[0007] The shell is a hollow cylinder with an open top, and the end cap is installed at the top of the shell. The charge is filled inside the shell, the main charge shroud is installed at the center of the top of the charge, and the auxiliary charge shrouds are evenly installed at the top of the charge along the circumference. A central hole is reserved in the center of the charge and the main charge shroud for axial penetration.

[0008] The detonation base plate has a circular ring structure and is installed on the top of the charge. The detonation base plate has a main penetrator channel and an auxiliary penetrator channel. The top of the detonation base plate is evenly and alternately provided with mating grooves and wiring grooves along the circumference. The end of the wiring groove is provided with a detonation hole. The detonation holes are arranged between adjacent auxiliary charge hoods.

[0009] The support plate includes a propellant groove and a plurality of mating plates extending radially outward from the propellant groove; the propellant groove is located in the center of the detonation base plate, and the mating plates are inserted into the mating grooves on the detonation base plate;

[0010] The connecting cover plate has a circular ring structure, is installed on the top of the detonating base plate and the support clamping plate, and is fixedly connected to the shell; the bottom end of the connecting cover plate is provided with a mating boss, which is inserted into the mating groove on the detonating base plate; the connecting cover plate is reserved with a main penetrator channel and an auxiliary penetrator channel.

[0011] The fuse is installed at the bottom of the casing, the explosive charge is filled in the charge slot, and the detonating head is installed in the detonation hole; one end of the detonating cord A is connected to the fuse, and the other end passes through the through hole reserved in the center of the charge and the main charge liner and is connected to the explosive charge; the detonating cord B is installed in the wiring groove of the detonation base plate, one end is connected to the explosive charge, and the other end is connected to the detonating head.

[0012] Preferably, the axial length of the charge is 0.25 to 1.50 CD, where CD is the charge diameter.

[0013] Preferably, the diameter of the central hole of the charge and the main charge shroud is 3 to 10 mm.

[0014] Ideally, the number of auxiliary drug masks should be 3 to 8.

[0015] Preferably, the material of the detonation substrate is polyethylene, polyurethane or phenolic resin plastic.

[0016] Preferably, the thickness of the detonation substrate is 10-15 mm.

[0017] Preferably, the material of the support plate is polyethylene, polyurethane or phenolic resin plastic.

[0018] Preferably, the thickness of the support plate is 1.5 to 4.5 mm.

[0019] Preferably, the thickness of the connecting cover plate is 2.5 to 6.5 mm.

[0020] The preferred diameter of the detonating charge is 8–16 mm.

[0021] Preferably, the thickness of the end cap is 1.5 to 5.5 mm.

[0022] Beneficial effects:

[0023] (1) This invention has made an innovative design for the multiple explosively formed projectile warhead. It has achieved reverse initiation of the multiple explosively formed projectile warhead in engineering by using a new type of initiation device, optimized and improved the warhead structure layout, reduced the overall length of the warhead, realized the miniaturization of the MEFP warhead, and improved the combat effectiveness of the weapon system.

[0024] (2) The novel detonation device design adopted in this invention can realize the safe and reliable transfer of detonation energy from the rear to the front of the warhead, while having little impact on the formation process of the damage element. In addition to being applied to multi-explosive-formed projectile warheads, this design can also be applied to other shaped charge warheads through improvement.

[0025] (3) The reverse-initiation multi-explosive forming projectile warhead designed in this invention has a compact structure and is relatively easy to disassemble, assemble, and maintain. The initiation base plate, support clamp, connecting cover plate, detonating cord A, detonating charge, detonating cord B, and detonating head can all be disassembled and replaced, which facilitates logistics and equipment updates. Attached Figure Description

[0026] Figure 1 This is the MEFP forming effect of the warhead of the present invention.

[0027] Figure 2 This is a cross-sectional view of the warhead structure of the present invention.

[0028] Figure 3 This is a structural diagram of the warhead of the present invention without the supporting components.

[0029] Figure 4 This is an exploded view of the detonation device of the present invention.

[0030] Figure 5 This is a schematic diagram of the explosion transmission process of the present invention.

[0031] Among them, 1-fuze, 2-charge, 3-shell, 4-main charge liner, 5-auxiliary charge liner, 6-detonating base plate, 7-supporting clamp, 8-connecting cover plate, 9-detonating charge, 10-end cap, 11-bolt, 12-detonating cord B, 13-detonating head, 14-detonating cord A; 61-main penetrator channel, 62-auxiliary penetrator channel, 63-fitting groove, 64-wiring groove, 65-detonating hole; 71-fitting plate, 72-charge groove; 81-main penetrator channel, 82-auxiliary penetrator channel, 83-fitting boss, 84-connecting lug, 841-assembly hole. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] This invention provides a reverse-initiated multi-explosive formed projectile (MEFP) warhead, which reliably transfers detonation energy from the rear to the front of the warhead. The designed initiation device achieves multi-point synchronous reverse initiation of the warhead in engineering terms. This initiation method ensures good MEFP formation even with a relatively small charge height. Figure 1 As shown, this provides technical support for the miniaturization of ammunition weapon systems.

[0034] The reverse-initiated multi-explosive forming projectile warhead of the present invention includes: a fuse 1, a charge 2, a casing 3, a main charge liner 4, a secondary charge liner 5, an initiation base plate 6, a support clamp 7, a connecting cover plate 8, a detonating charge 9, an end cap 10, a bolt 11, a detonating cord B12, a detonating head 13, and a detonating cord A14, as shown. Figure 2 As shown.

[0035] The shell 3 is a hollow cylinder with one open end. A fuse hole is provided on the bottom end face of the shell 3 for installing the fuse 1. An end cap 10 is sealed and installed at the open end of the shell 3. The propellant charge 2 is filled inside the shell 3. A main propellant shroud 4 is installed at the center of the top of the propellant charge 2, and auxiliary propellant shrouds 4 are evenly installed circumferentially on the top of the propellant charge 2. A central hole for axial penetration is pre-drilled in the center of both the propellant charge 2 and the main propellant shroud 4. Figure 2 and Figure 3 As shown.

[0036] The detonating base plate 6 has a circular structure and is installed at the top of the explosive charge 2. The detonating base plate 6 has a main penetrator channel 61 for the main penetrator formed by the main explosive liner 4 and an auxiliary penetrator channel 62 for the auxiliary penetrator formed by the auxiliary explosive liner 5. One side of the detonating base plate 6 is flat and connects with the explosive charge of the warhead. The other side has a mating groove 63 for installing the support clamp 7, a wiring groove 64 for placing the detonating cord B12, and a detonation hole 65 for placing the detonating head 13. The detonation hole 65 is located at the end of the wiring groove 64 and is evenly arranged circumferentially between adjacent auxiliary explosive liners 5. Figure 4 As shown.

[0037] The support clamp 7 includes a charge groove 72 and multiple mating plates 71 extending outward from the charge groove; the charge groove 72 of the support clamp 7 is located in the center of the detonating base plate 6, and the mating plates 71 are inserted into mating grooves 63 on the detonating base plate 6 and fixed by mating bosses 83 on the connecting cover plate 8, thus restricting their axial movement. The detonating charge 9 is filled into the charge groove 72, realizing the reliable transfer of detonation energy from the detonating cord A 14 to the detonating cord B12; as... Figure 4 As shown.

[0038] The fuse 1 is inserted into the fuse hole on the rear end of the housing 3 via a threaded connection; one end of the detonating cord A 14 is connected to the fuse 1, and the other end passes through the through hole reserved in the center of the charge 2 and the main charge liner 4 and connects to the detonating charge 9 in the charge groove 72 of the support plate 7; the detonating cord B 12 is installed in the wiring groove 64 of the detonating base plate 6, one end is connected to the detonating charge 9, and the other end is connected to the detonating head 13 installed in the detonation hole 65, as shown. Figure 3 As shown.

[0039] The connecting cover plate 8 is a circular structure that covers the top of the detonating base plate 6 and the supporting clamp plate 7. Connecting lugs 84 are evenly distributed on its outer circumference for connection and fixation with the housing 3. Mating bosses 83 are evenly distributed on its inner circumference; during assembly, these are inserted into the mating grooves on the detonating base plate to fix the mating plate 71 of the supporting clamp plate 7. The connecting cover plate 8 also has a main penetrator channel 81 for the main penetrator formed by the main propellant liner 4 and an auxiliary penetrator channel 82 for the auxiliary penetrator formed by the auxiliary propellant liner 5. Bolts 11 are inserted into the housing 3 through threaded mounting holes 841 on the connecting lugs 84. Figure 4 As shown. The function of the connecting cover plate is to connect the shell to other parts inside the shell, and to restrict the axial movement of the support clamp and the circumferential rotation of the internal structures of the shell, such as the explosive charge.

[0040] The assembly process of the reverse-detonation multi-explosive forming projectile warhead of the present invention is as follows:

[0041] First, insert the detonating charge 9 into the charge slot 71 on the support clamp 7. Connect one end of the detonating cord B12 to the side of the detonating charge 9 and the other end to the detonating head 13. Connect the bottom of the detonating charge 9 to the detonating cord A14. Then, insert the mating plate 71 on the support clamp 7 into the mating slot 63 on the detonating base plate 6. Insert the detonating cord B12 into the wiring slot 64 on the detonating base plate 6. Insert the detonating head 13 into the detonation hole 65 on the detonating base plate 6. Insert the mating boss 83 on the connecting cover plate 8 into the detonating plate. In the mating groove 63 on the detonating base plate 6, the mating plate 71 on the supporting clamping plate 7 contacts and presses against it; finally, assemble the main explosive shaped cover 4, the auxiliary explosive shaped cover 5, and the explosive charge 2; pass the detonating cord A14 through the central through hole of the main explosive shaped cover 4 and the explosive charge 2, connect the explosive charge 2 to the detonating base plate 6, insert the explosive charge 2 and its connected components into the housing 2, connect the detonating cover plate 8 to the housing 3 using bolts 11, connect the end cap 10 to the housing 3, connect the fuse 1 to the detonating cord A14, connect the fuse 1 to the housing 3, and the assembly is complete. Figures 2-4 As shown.

[0042] The diameter of the central hole of the charge 2 and the main charge shroud 4 is preferably 3-10 mm; the axial length of the charge 2 is preferably 0.25-1.00 CD, but can be expanded to 1.50 CD, where CD is the charge diameter. The number of auxiliary charge shrouds 5 is preferably 3-8. The central holes of the charge 2 and the main charge shroud 3 should be aligned to prevent bending of the detonating cord A. The material of the initiating base plate 6 is preferably polyethylene, polyurethane, or phenolic resin plastic. The thickness of the initiating base plate 6 is preferably 10-15 mm. The material of the supporting clamp 7 is preferably polyethylene, polyurethane, or phenolic resin plastic. The thickness of the supporting clamp 7 is preferably 1.5-4.5 mm. The thickness of the connecting cover plate 8 is preferably 2.5-6.5 mm. The number of connecting lugs 84 on the connecting cover plate 8 is preferably 3-12. The diameter of the detonating charge 9 is preferably 8-16 mm. The thickness of the end cap 10 is preferably 1.5-5.5 mm. The bolt 11 is preferably an internal hex bolt. The number of detonating heads 13 is preferably 3 to 8. Shellac is preferably used to connect the charge 2 to the detonating head 13, the charge 2 to the detonating base plate 6, the detonating charge 9 to the detonating cord A14, and the detonating charge 9 to the detonating cord B12.

[0043] The working principle of the reverse-detonation multi-explosive forming projectile warhead of the present invention is as follows:

[0044] After receiving the detonation signal, the warhead fuse 1 does not directly interact with the warhead charge 2, but instead transfers the detonation energy to the detonating cord A14. The detonating cord A14 passes through the center hole of the warhead charge 2 and the main charge liner 4, detonating the detonating charge 9 located at the top of the charge 2 and filled in the charge slot 72 of the support plate 7. The detonating charge 9 then transmits the detonation energy synchronously to multiple detonating heads 13 installed at the top of the charge 2 via the detonating cord B12. These detonating heads 13 simultaneously detonate the charge 2 at multiple points in a reverse direction. Figure 5 As shown, under the action of the explosive shock wave and detonation product gases, the main explosive liner 4 and the auxiliary explosive liner 5 are compressed from bottom to top at a small angle to form a high-speed, dense explosively formed projectile. The projectile passes through the reserved through holes 61, 62, 81 and 82 of the detonation base plate 6 and the connecting cover plate 8 and penetrates the end cover to fly towards the target, causing highly efficient damage to the enemy target.

[0045] To ensure good MEFP formation even with a relatively small propellant charge height, the propellant liner is made of copper, with eight auxiliary propellant liner units. Under conditions of a warhead diameter of 150mm and a propellant charge height of 37.5mm, the main penetrator length reaches 74mm, the tail skirt diameter reaches 40mm, and the head velocity reaches 1835m / s. The auxiliary penetrator length reaches 25mm, and the head velocity reaches 1266m / s. Figure 1 As shown.

[0046] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A reverse-detonation type multi-explosive forming projectile warhead, characterized in that, include: The fuse (1), charge (2), casing (3), main charge liner (4), auxiliary charge liner (5), detonating base plate (6), support clamp (7), connecting cover plate (8), detonating charge (9), end cap (10), detonating cord B (12), detonating head (13) and detonating cord A (14); Among them, the shell (3) is a hollow cylinder with an open top, and the end cap (10) is installed on the top of the shell (3); the drug (2) is filled in the shell (3), the main drug liner (4) is installed at the center of the top of the drug (2), and the auxiliary drug liner (5) is evenly installed on the top of the drug (2) along the circumference; the center of the drug (2) and the main drug liner (4) has a central hole for axial penetration. The detonation base plate (6) is a circular ring structure and is installed on the top of the charge (2); the detonation base plate (6) has a main penetrator channel (61) and an auxiliary penetrator channel (62) reserved on it; the top of the detonation base plate (6) is provided with a mating groove (63) and a wiring groove (64) evenly and interlaced along the circumference, and the end of the wiring groove (64) is provided with a detonation hole (65); the detonation hole (65) is arranged between adjacent auxiliary charge hoods (5); The support plate (7) includes a propellant groove (72) and a plurality of mating plates (71) extending radially outward from the propellant groove; the propellant groove (72) is located in the center of the detonating base plate (6), and the mating plates (71) are inserted into the mating grooves (63) on the detonating base plate (6); The connecting cover plate (8) is a ring structure, installed on the top of the detonating base plate (6) and the supporting clamp plate (7), and fixedly connected to the shell (3); the bottom end of the connecting cover plate is provided with a mating boss (83), which is inserted into the mating groove (63) on the detonating base plate (6); the connecting cover plate (8) is reserved with a main penetrator channel (81) and an auxiliary penetrator channel (82); The fuse (1) is installed at the bottom of the housing (3), the explosive charge (9) is filled in the charge slot (72), and the detonator (13) is installed in the detonation hole (65); one end of the detonating cord A (14) is connected to the fuse (1), and the other end passes through the center hole reserved in the center of the charge (2) and the main charge liner (4) and is connected to the explosive charge (9); the detonating cord B (12) is installed in the wiring groove (64) of the detonation base plate (6), one end is connected to the explosive charge (9), and the other end is connected to the detonator (13).

2. The reverse-detonation multiple explosively formed projectile warhead as described in claim 1, characterized in that, The axial length of the charge (2) is 0.25~1.50CD, where CD is the diameter of the charge.

3. The reverse-detonation multiple explosively formed projectile warhead as described in claim 1 or 2, characterized in that, The diameter of the central hole of the charge (2) and the main charge shroud (4) is 3~10mm.

4. The reverse-detonation multiple explosively formed projectile warhead as described in claim 1, characterized in that, The number of auxiliary drug type masks (5) is 3 to 8.

5. The reverse-detonation multiple explosively formed projectile warhead as described in claim 1, characterized in that, The material of the detonation substrate (6) is polyethylene, polyurethane or phenolic resin plastic.

6. The reverse-detonation multiple explosively formed projectile warhead as described in claim 1 or 5, characterized in that, The thickness of the detonation substrate (6) is 10~15mm.

7. The reverse-detonation multiple explosively formed projectile warhead as described in claim 1, characterized in that, The material of the support plate (7) is polyethylene, polyurethane or phenolic resin plastic.

8. The reverse-detonation multiple explosively formed projectile warhead as described in claim 1 or 7, characterized in that, The thickness of the support plate (7) is 1.5~4.5mm.

9. The reverse-detonation multiple explosively formed projectile warhead as described in claim 1, characterized in that, The thickness of the connecting cover plate (8) is 2.5~6.5mm.

10. The reverse-detonation multiple explosively formed projectile warhead as described in claim 1, characterized in that, The diameter of the explosive charge (9) is 8~16mm; the thickness of the end cap (10) is 1.5~5.5mm.

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