Shrapnel projectile and method of making same
By designing a blank cartridge for grenade launchers, the problem of the lack of blank cartridges for grenade launchers was solved, achieving a shooting experience and safety training effect similar to that of standard cartridges, and making it suitable for basic shooting training of grenade launchers.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUNAN HONGYUAN YUANDA TECH CO LTD
- Filing Date
- 2023-08-29
- Publication Date
- 2026-08-04
AI Technical Summary
The lack of suitable blank cartridges for existing grenade launchers leads to poor training results and fails to meet the needs of live-fire combat systems. Furthermore, existing blank cartridges are difficult to simulate the sensory experience of live-fire shooting and adapt to the essentials of firearm shooting.
Design a discarding sabot blank cartridge for a grenade launcher, consisting of an upper body, a cartridge band, a lower body, a plug cap, and a counterweight filler. By cutting fragmentation grooves on the upper body and combining them with the propellant, the projectile rotates at high speed under the action of rifling after firing, shearing the cartridge band and splitting into multiple pieces, simulating the sensory experience of live-fire shooting.
It achieves internal ballistic performance similar to standard ammunition, is safe with no risk of explosion, is suitable for small-scale range training, meets the mastery requirements of basic grenade launcher firing actions, requires no additional equipment, and is environmentally friendly.
Smart Images
Figure CN117109364B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of ammunition technology, specifically to a discarding sabot blank cartridge for a grenade launcher and its preparation method. Background Technology
[0002] Currently, in order to promote realistic combat training, the PLA Army is vigorously promoting and applying the live-fire combat training system developed by the 60th Research Institute of the Equipment Development Department of the Central Military Commission in exercises. This system, by adopting the methods of "using light instead of bullets" and "using data instead of bullets," comprehensively utilizes technologies such as laser simulation, data acquisition, wireless communication, and computer simulation to simulate the combat performance of weapons and equipment as much as possible, and realizes the function of realistic combat training evaluation.
[0003] Automatic grenade launchers, as a crucial piece of company-level firepower, have a range exceeding 1500 meters and should play a vital role in combat exercises. However, the high safety requirements of ammunition firing and the availability of suitable training grounds have always been a challenge for the military. Blank ammunition, as a primary training round, can significantly reduce the constraints imposed by terrain and safety factors on live-fire training, while providing trainees with a sensory experience of live-fire, helping them quickly adapt to and master the techniques of grenade launcher firing. However, the current lack of blank ammunition specifically designed for grenade launchers makes it difficult to utilize the aforementioned training systems for combat training. Furthermore, existing blank ammunition has the following drawbacks:
[0004] 1. Blank cartridges are difficult to achieve a sensory experience that is basically the same as live-fire shooting, which is not conducive to quickly adapting to and mastering the shooting techniques of firearms. In addition, a blank cartridge pump-action device needs to be installed at the muzzle, which is inconvenient to operate.
[0005] 2. Blank rounds without heads are not suitable for grenade launcher training, while the current structure of blank rounds with heads is suitable for bullets but not for grenades. There are currently no matching blank rounds for grenade launchers to meet the training requirements.
[0006] Therefore, there is an urgent need to develop blank ammunition suitable for grenade launchers to meet the requirements of primary shooting training ammunition and live-fire combat systems, fully simulate the battlefield atmosphere, and improve the effectiveness of exercises. Summary of the Invention
[0007] The present invention aims to solve the technical problems existing in the prior art. Therefore, the present invention provides a discarding sabot blank cartridge for a grenade launcher and a method for its preparation.
[0008] The technical solution adopted by this invention to solve its technical problem is:
[0009] A discarding sabot blank cartridge for a grenade launcher is provided, comprising a propellant charge and a projectile; the projectile includes an upper body, a cartridge band, a lower body, a plug cap, and a counterweight filler; the front end of the upper body is truncated into a frustum shape, and the cartridge band is embedded in the outer wall of its rear end; multiple fragmentation grooves are cut along the length of the outer wall of the upper body, the fragmentation grooves cutting from the inner wall of the upper body into the cartridge band without severing the cartridge band; the plug cap is located at the front end of the inner cavity of the upper body and is used to seal the end of the upper body; the counterweight filler is filled into the upper body and is sealed by the lower body screwed to the rear end of the upper body.
[0010] Preferably, the plug is configured to match the shape of the inner cavity at the front end of the upper projectile.
[0011] Preferably, the cutting depth of the sharding groove on the spring belt exceeds the bottom of the groove in the spring belt.
[0012] Preferably, the upper projectile has four fracture grooves evenly distributed on it.
[0013] Preferably, the weight of the blank cartridge is the same as the weight of the standard cartridge.
[0014] In a preferred embodiment of the present invention, the side of the lower projectile facing the counterweight filler is provided with a first groove, and a rubber block is embedded in the first groove; the side of the lower projectile facing the propellant is provided with a second groove.
[0015] In a preferred embodiment of the present invention, the counterweight filler is a lightweight sphere.
[0016] Preferably, the counterweight filler is any one of plastic balls, aluminum balls, or foam balls.
[0017] In a preferred embodiment of the present invention, the propellant charge includes a propellant cartridge and a propellant and primer disposed within the propellant cartridge.
[0018] A method for preparing a discarding sabot blank cartridge for a grenade launcher is also provided, comprising the following steps:
[0019] S1, squeeze the ammunition belt into the pre-formed groove of the upper projectile body;
[0020] S2, multiple fragmentation grooves are cut out by wire cutting. The fragmentation grooves are cut from the inner wall of the upper projectile to the inside of the projectile belt without cutting the projectile belt. The cutting depth of the fragmentation grooves on the projectile belt exceeds the bottom of the groove of the projectile belt.
[0021] S3, insert the plug from the tail end of the upper projectile, and then put in the counterweight filler layer by layer. The weight of the counterweight filler is pre-configured according to the weight of the blank cartridge and the standard cartridge.
[0022] S4, after the rubber block is placed into the first groove of the lower projectile, the lower projectile and the upper projectile are threaded together to form a projectile;
[0023] S5 is formed by tightly fitting the propellant charge and the tail of the projectile with an interference fit to create a blank cartridge.
[0024] Compared with the prior art, the beneficial effects of the present invention are:
[0025] I. The blank cartridge designed in this invention uses rifling to give the projectile high-speed rotation after firing and shear the cartridge band. After leaving the barrel, the cartridge band breaks under the action of centrifugal force, wind resistance and the climbing force of the plug cap. The upper body of the projectile splits into multiple pieces, thus disintegrating the projectile. After disintegration, it decomposes into multiple lightweight parts. The range is reduced by air resistance. It is suitable for training in small ranges and can be used to train soldiers to master the basic shooting techniques of grenade launchers. It can also be used for live-fire exercises, filling the gap in blank cartridges for grenades.
[0026] Second, the blank cartridge has the same weight as the standard cartridge, ensuring that it has similar internal ballistic performance to the standard product during firing, and is basically consistent with the sensory experience of live-fire shooting, and there is no need to install a blank cartridge recoil booster at the muzzle.
[0027] Third, the blank cartridge does not contain any dangerous or sensitive substances such as pyrotechnics, poses no risk of explosion, and the cartridge is made of non-polluting materials, causing no pollution to the environment. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:
[0029] Figure 1 This is a half-sectional view of the discarding sabot blank cartridge for a grenade launcher provided by the present invention;
[0030] Figure 2 yes Figure 1 A left view of the upper projectile body equipped with a cartridge belt. Detailed Implementation
[0031] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0033] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0034] Furthermore, the terms "first," "second," etc., used in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. The terms "installed," "connected," and "linked" should be interpreted broadly; for example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a mechanical connection or an electrical connection; they may refer to a direct connection or an indirect connection through an intermediate medium; they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0035] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.
[0036] Example 1
[0037] As attached Figure 1 and attached Figure 2 As shown, this embodiment provides a discarding sabot blank cartridge for a grenade launcher, consisting of a propellant charge 2 and a projectile 1. The propellant charge 2 and the tail of the projectile 1 are press-fitted together. The projectile 1 includes an upper body 1.1, a cartridge belt 1.2, a lower body 1.3, a plug cap 1.4, and a counterweight filler 1.5, wherein:
[0038] The front end of the upper projectile 1.1 is truncated cone-shaped, and a projectile band 1.2 is embedded in its rear outer wall. The projectile band is used to insert into the rifling, causing the projectile to rotate at high speed within the rifling, improving the projectile's flight stability. The rifling also shears the projectile band. Multiple fragmentation grooves 1.1.0 are cut along the length of the outer wall of the upper projectile 1.1. In this embodiment, preferably, four fragmentation grooves are evenly distributed around the outer circumference of the upper projectile. The fragmentation grooves 1.1.0 cut from the inner wall of the upper projectile 1.1 into the projectile band 1.2 without cutting through it. That is, in this embodiment, the fragmentation grooves divide the upper projectile into four segments. The fragmentation grooves also cut into the projectile band but do not cut through it. Preferably, the cutting depth exceeds the bottom of the groove 1.2.0 of the projectile band. Figure 1 As shown, this design allows the bullet belt to break apart after traveling a certain distance from the barrel due to the shearing of the rifling. This is caused by the centrifugal force, wind resistance, and the lift force of the plug cap.
[0039] The plug 1.4 is located at the front end of the inner cavity of the upper projectile 1.1 and is used to block the end of the upper projectile; preferably, the plug 1.4 is designed to match the shape of the front end inner cavity of the upper projectile 1.1.
[0040] The counterweight filler 1.5 is filled into the upper projectile 1.1 and sealed by the lower projectile 1.3 screwed to the tail of the upper projectile 1.1. In this embodiment, the counterweight filler 1.5 is a lightweight sphere.
[0041] The propellant charge 2 includes a propellant cartridge 2.1 and a propellant 2.2 and a primer 2.3 disposed within the propellant cartridge.
[0042] Preferably, the weight of the blank cartridge in this embodiment is the same as that of the standard cartridge, ensuring that it has similar internal ballistic performance to the standard product during firing, and is basically consistent with the sensory experience of live-fire shooting. At the same time, this type of blank cartridge does not require a blank cartridge recoil booster to be installed at the muzzle, that is, it can be fired normally without the addition of any auxiliary devices.
[0043] Working principle: During shooting training, the firing pin strikes the primer and ignites the propellant. The resulting high-temperature and high-pressure gas propels the projectile forward. At the same time, the rifling gives the projectile high-speed rotation and shears the bullet band. After the projectile leaves the muzzle for a certain distance, the upper body splits into four pieces under the action of centrifugal force, wind resistance, and the lift force of the plug, and disperses in all directions. It slows down through air resistance and falls in free fall at about 70 meters.
[0044] Example 2
[0045] Based on Example 1, as shown in the appendix Figure 1As shown, in this embodiment, a first groove 1.3.1 is provided on the side of the lower projectile 1.3 facing the counterweight filler 1.5, and a rubber block 1.6 is embedded in the first groove. A second groove 1.3.2 is provided on the side of the lower projectile 1.3 facing the launching charge 2.
[0046] In this embodiment, a rubber block is embedded in the lower projectile body. The elasticity of the rubber block facilitates a smoother threaded connection between the lower and upper projectile bodies, preventing the upper projectile from expanding open. The second groove in the lower projectile body reduces the intensity of the low-pressure eddy current at the projectile's base, filling the local vacuum area with air, thereby increasing the pressure at the projectile's base, reducing bottom drag, and increasing range. The range can be adjusted by choosing whether to include the second groove, depending on the applicable scenario.
[0047] Example 3
[0048] Based on Example 1, the counterweight filler 1.5 in this example uses a lightweight sphere, such as any one of plastic spheres, aluminum spheres, or foam spheres.
[0049] Example 4
[0050] This embodiment provides a method for preparing a discarding sabot blank cartridge for a grenade launcher as described in any of Embodiments 1 to 3, comprising the following steps:
[0051] S1, squeeze the ammunition belt into the pre-formed groove of the upper projectile body;
[0052] S2, multiple fragmentation grooves are cut out by wire cutting. The fragmentation grooves are cut from the inner wall of the upper projectile to the inside of the projectile belt without cutting the projectile belt. The cutting depth of the fragmentation grooves on the projectile belt exceeds the bottom of the groove of the projectile belt.
[0053] S3, insert the plug from the tail end of the upper projectile, and then put in the counterweight filler layer by layer. The weight of the counterweight filler is pre-configured according to the weight of the blank cartridge and the standard cartridge.
[0054] S4, after the rubber block is placed into the first groove of the lower projectile, the lower projectile and the upper projectile are threaded together to form a projectile;
[0055] S5 is formed by tightly fitting the propellant charge and the tail of the projectile with an interference fit to create a blank cartridge.
[0056] It is worth noting that in the above embodiments, the discarding of the sabot in the blank cartridge refers to the disintegration and separation of the upper cartridge body.
[0057] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A discarding sabot blank cartridge for a grenade launcher, comprising a propellant charge and a projectile; characterized in that: The projectile comprises an upper body, a cartridge belt, a lower body, a stop cap, and counterweight filler, wherein: The front end of the upper projectile is shaped like a frustum, and a projectile belt is embedded in the outer wall of its tail. The outer wall of the upper projectile is cut with multiple fragmentation grooves that penetrate the upper projectile along its length. The fragmentation grooves are cut from the inner wall of the upper projectile into the projectile band but do not cut the projectile band. The cutting depth of the fragmentation grooves on the projectile band exceeds the bottom of the groove of the projectile band. The lower projectile body has a first groove on the side facing the counterweight filler, and a rubber block is embedded in the first groove. The lower projectile body has a second groove on the side facing the propellant. The plug is located at the front end of the inner cavity of the upper projectile and is used to seal the end of the upper projectile. The plug is designed to match the shape of the inner cavity at the front end of the upper projectile. The counterweight filler is filled into the upper projectile body and sealed by the lower projectile body and the tail of the upper projectile body; The blank cartridge has the same weight as the standard cartridge. After firing, it uses rifling to give the projectile high-speed rotation and shear the cartridge band. After leaving the barrel, the cartridge band breaks under the action of centrifugal force, wind resistance and the climbing force of the plug, and the upper body of the projectile splits into multiple pieces, causing the projectile to disintegrate.
2. The discarding sabot blank cartridge for a grenade launcher according to claim 1, characterized in that: The counterweight filler is made of lightweight spheres.
3. The discarding sabot blank cartridge for a grenade launcher according to claim 2, characterized in that: The counterweight filler can be any one of plastic balls, aluminum balls, or foam balls.
4. The discarding sabot blank cartridge for a grenade launcher according to claim 1, characterized in that: The upper projectile has four fragmentation grooves evenly distributed on it.
5. The discarding sabot blank cartridge for a grenade launcher according to claim 1, characterized in that: The propellant charge includes a propellant cartridge and a propellant and primer disposed within the propellant cartridge.
6. A method for preparing a discarding sabot blank cartridge for a grenade launcher according to any one of claims 1 to 5, characterized in that: Includes the following steps: S1, squeeze the ammunition belt into the pre-formed groove of the upper projectile body; S2, multiple fragmentation grooves are cut out by wire cutting. The fragmentation grooves are cut from the inner wall of the upper projectile to the inside of the projectile belt without cutting the projectile belt. The cutting depth of the fragmentation grooves on the projectile belt exceeds the bottom of the groove of the projectile belt. S3, insert the plug from the tail end of the upper projectile, and then put in the counterweight filler layer by layer. The weight of the counterweight filler is pre-configured according to the weight of the blank cartridge and the standard cartridge. S4, after the rubber block is placed into the first groove of the lower projectile, the lower projectile and the upper projectile are threaded together to form a projectile; S5 is formed by tightly fitting the propellant charge and the tail of the projectile with an interference fit to create a blank cartridge.