JP6318672B2 - Burnout container and propellant charge - Google Patents

Description

  The present invention relates to a burnout container used as a container for a projectile charge for firing a bullet in a cannon such as an a howl cannon, and a projectile charge for a firearm using the burnout container.

  A bullet (flying object) used in an artillery such as a shell cannon is ejected from the barrel by being pressurized by the pressure of the combustion gas generated when the propellant is ignited by an igniter. As such a bullet, the fixed bullet with the bullet fixed to the shell containing the propellant inside, the bullet and the propellant are separated, and the single bullet is loaded into the barrel and then the propellant is put inside It is divided into separate loading bullets loaded with the propellant containing the. For the propellant, a hollow container capable of containing the propellant is used, and as the hollow container, a burnable container that is burned out by the flame of the propellant is used.

  It should be noted that the number of projectiles loaded into the barrel along with the bullets is determined according to the desired projectile range. That is, only one projectile is sufficient for the short range, but a plurality of projectiles are loaded according to the range for the long range. In this case, since a plurality of projectiles are loaded side by side in the axial direction of the gun barrel, the projectile charge for a long range can be efficiently loaded into the gun barrel 110 as shown in FIG. As such, a modular propellant 10 is used that is axially connectable to each other. In FIG. 15, reference numeral 100 indicates a bullet, reference numeral 111 indicates a chamber, reference numeral 112 indicates a gun cavity, and reference numeral 113 indicates a closing device that closes the proximal end opening of the gun barrel 110.

  For example, there is Patent Document 1 as such a modular projectile charge. The propellant of Patent Document 1 propagates the flame generated by being ignited by an igniter consisting of a firing tube arranged on the central axis of the cannon to all the connected propellants, A through hole penetrating in the axial direction is provided at the radial center of the propellant charge (burnout container). And the propellant is accommodated in the burnout container, and the igniting agent is arranged in the central through hole. In addition, if it is a short-range propellant, it does not have a center through-hole, but an ignition agent is accommodated with a propellant in a hollow burning container.

Japanese Patent Laid-Open No. 5-118793

  By the way, the propellant in the propellant has a characteristic that the combustion speed changes depending on the temperature before ignition. The change in the firing rate of the propellant changes the pressure profile within the gun barrel's chamber, so that a projectile can be used to fly a bullet from the gun and land at the target point. It is necessary to adjust the firing angle of the gun after accurately knowing the temperature of the gunpowder.

  For that purpose, for example, it is necessary to insert a sensing part such as a bimetal thermometer or a thermocouple thermometer into the propellant, but the burnout container used for the conventional propellant is the sensing part of the thermometer. The structure is not supposed to be inserted. For this reason, conventionally, when measuring the internal temperature, a tool such as a drill is used to open a hole for inserting the sensing part into the outer wall surface of the burnout container, which requires extremely complicated work.

  In order to solve this problem, it is simply considered that an insertion hole into which the sensing part of the thermometer can be inserted is formed in advance at any location on the outer wall of the burnout container. However, in this case, when loading the propellant into the self-propelled gun in rainy weather, raindrops can easily enter from the insertion hole, and the ignition characteristics of the propellant are reduced by moisture, or the propellant contained inside is inserted from the insertion hole. There are concerns about adverse effects on propellants, such as spilling.

  Accordingly, the present invention provides a burnout container that has a small adverse effect on a propellant while easily inserting a thermometer sensing part for measuring the temperature of the propellant contained therein, and a gun firing using the same. The purpose is to provide a charge.

As a means for that, the present invention is for a projectile charge for firing a bullet in a gun, and is a hollow burnout container that houses a propellant inside, and a thermometer for measuring the internal temperature on the outer wall. and can be inserted sensing part, characterized in that a weakened portion by a bottom groove and thinner than other portions. The outer wall is a wall that defines the outer shape of the burnout container, and includes a side wall, a top wall, and a bottom wall.

The bottomed grooves can be formed for example in a shape of a plurality of straight lines extending radially around the base point. As a shape extending radially, not only the shape of three or more straight lines extending in different directions around a certain point (base point), but also an l-shape with two straight lines extending in opposite directions 180 ° from the base point In addition, a V shape in which two straight lines extend in different directions from the base point is included.

Moreover, the bottomed groove may be formed in a U-shape or U-shape.

  Furthermore, according to the present invention, it is also possible to provide a firing charge for a gun using the above-mentioned burnout container.

  According to the present invention, by providing the fragile portion on the outer wall of the burnout container in advance, when measuring the internal temperature (temperature of the propellant), the sensitive portion of the thermometer is pressed against the fragile portion, The outer wall of the container can be inserted into the interior while being expanded. Therefore, it is possible to save the trouble of drilling a hole using a tool as in the prior art, and to easily measure the temperature of the propellant accommodated inside.

  When the fragile part is provided by a bottomed groove that is thinner than other parts, there is no gap that penetrates the inside and outside of the burnout container, so even when handling the propellant in rainy weather, until the internal temperature is measured Can reliably prevent raindrops from entering. On the other hand, when the fragile portion is provided by a through cut, the thermometer sensing portion can be inserted with a smaller force than the fragile portion due to the bottomed groove. Even in this case, since the through-cut has a small opening width, it is difficult for raindrops to enter from the through-cut, and the amount of moisture intrusion can be greatly reduced as compared with a case where an insertion hole of a certain size is provided in advance.

  Moreover, if it is a weak part by a bottomed groove | channel or a penetration notch, the propellant accommodated inside does not spill accidentally from a weak part. When the thermometer sensing part is inserted, the burnout container is basically elastically deformed, so that there is almost no gap even after the thermometer sensing part is removed. Even if it is plastically deformed to some extent, the gap is smaller than that of the thermometer sensing part, so that the propellant does not spill out.

FIG. 3 is a perspective view of a projectile charge according to the first embodiment. It is a principal part expanded sectional view of the weak part by a penetration cut. It is a principal part expanded sectional view of the weak part by a bottomed groove. It is a perspective view which shows the state which inserted the thermometer to the projectile charge. FIG. 5 is a cross-sectional view of the projectile charge in the state of FIG. 4. It is a perspective view of the projectile charge of Embodiment 2. It is a perspective view of the projectile charge of Embodiment 3. It is a front view of the projectile charge of Embodiment 4. It is a front view of the projectile charge of Embodiment 5. It is a front view of the projectile charge of Embodiment 6. It is a front view of the projectile charge of Embodiment 7. It is a front view of the projectile charge of Embodiment 8. It is a front view of the launching charge of Embodiment 9. It is sectional drawing of the short range firing charge. It is sectional drawing of the gun barrel of the state which loaded the separation loading bullet.

  Hereinafter, typical embodiments of the present invention will be described. The launching charge of the present invention is a launching charge for firing a bullet in a gun such as an a howl cannon, and is roughly divided into two types: a short-range launching charge and a long-range launching charge. First, an example applied to a long-range launching charge will be described.

(Embodiment 1)
As shown in FIGS. 1 and 5, the long-range propellant 10 has a propellant 12 accommodated in a burnout container 11, and an igniting agent 15 in a through-hole 14 extending in the axial direction at the radial center. Is arranged.

  The burnout container 11 is a cylindrical hollow container that is burned down by combustion and has an axial through hole 14 in the radial center. The burnout container 11 includes a bottomed cylindrical storage case 11 a that stores the propellant 12, a lid body 11 b that closes the top opening of the storage case 11 a, and an ignition cylinder 11 c that holds the ignition powder 15. Become. The lid 11b has a basin shape in which a peripheral wall is erected from the outer peripheral edge of the bottom plate constituting the top wall 11r of the burnout vessel 11, and the female end of the propellant 10 is defined by the lid 11b. Yes. On the other hand, the bottom portion 11m of the burnout container 11 (container case 11a) is a male end that is slightly reduced in diameter as compared with other parts, and the male end corresponds to the other explosive charge 10. By fitting inside the female mold end, a plurality of projectile charges 10 can be continuously connected in the axial direction. The bottom wall 11f, the side wall 11s, and the top wall 11r of the burnout container 11 correspond to the “outer wall” of the present invention. Further, as shown in FIG. 15, when the firing charge 10 is loaded into the gun barrel 110, the male end (bottom wall 11f side) faces the muzzle side of the gun barrel 110, and the female end It is loaded with the part (the top wall 11r side) facing the closing device 113 side of the gun barrel 110.

  The ignition cartridge 11c is a cylindrical member that is open at both upper and lower ends, and is arranged in the axial direction toward the radial center of the housing case 11a, thereby defining a part of the inner peripheral wall of the through hole 14. ing. In addition, an igniting agent 15 that is ignited by an igniter (not shown) is fixed to the inner peripheral surface of the igniting cylinder 11c in a state of being packed in a medicine bag. Further, a large number of pores 11d are formed in the peripheral wall of the igniter cylinder 11c for propagating the flame generated by the igniter 15 to the propellant 12 in the burnout container 11 (accommodating case 11a).

  The burnout container 11 (the storage case 11a, the lid 11b, and the ignition cartridge 11c) is mainly composed of nitrocellulose or kraft pulp, and these are formed into a container shape with a binder resin. As the binder resin, styrene butadiene latex, acrylic resin, polyethylene, polystyrene, polyamide, polybutadiene, polyurethane and the like can be used. Moreover, it is also preferable to add a stabilizer for suppressing the spontaneous decomposition of nitrocellulose to the burnout container 11. Examples of the stabilizer include ethyl central, diphenylamine, and methyldiphenylurea. The burn-out container 11 is formed into a predetermined shape by dispersing various materials and additives as needed in water, sucking and adhering them to a mold to make a felt shape, and further heating and pressing the mold with a mold. it can. The burnout container 11 is ignited with a propellant combustion gas in a gun chamber, and burns itself to disappear.

  The propellant 12 housed in the internal space of the burnout container 11 (the space defined by the housing case 11a, the lid body 11b, and the ignition cartridge 11c) is a publicly known technique that has been used for this type of propellant. Can be used without particular limitation, for example, a single base based on nitrocellulose, a double base based on nitrocellulose and nitroglycerin, a triple based on nitrocellulose, nitroglycerin and nitroguanidine Bases, those whose surfaces are coated with a coating agent, drugs using binders mainly composed of polymers containing azide groups and nitrate groups, or multibases containing explosive components such as RDX and other high-energy substances Can be used. Moreover, additives, such as a stabilizer, a flame retardant, and a brightener, can also be added as needed. Examples of the stabilizer include ethyl central, examples of the flame retardant include potassium sulfate and cryolite, and examples of the brightener include graphite.

  The propellant 12 is for injecting a bullet (a flying object) with combustion gas generated upon combustion. The propellant 12 is formed in a granular shape with a predetermined shape, and a large number of the granular propellant 12 is accommodated in the burnout container 11. The shape of the propellant 12 is not particularly limited as long as it is a shape conventionally used in this type of propellant. For example, a spherical shape, a non-cylindrical hole, a single cylindrical hole, a seven-cylindrical cylinder, a nineteen-cylindrical hole, a hexagon 19 It can be a hole or the like.

  In order to measure the accurate temperature of the propellant 12, it is necessary to measure the sensitive part of the bimetal thermometer or thermocouple thermometer in direct contact with the propellant 12. However, if an insertion hole for inserting the thermometer sensing part is provided in advance on the outer wall of the burnout container 11, there is an adverse effect on the propellant 12, such as infiltration of raindrops or spilling of the propellant 12 from the propellant 10. Concerned. On the other hand, it is complicated to drill the insertion hole using a tool during temperature measurement. Therefore, in the present invention, a weakened portion that can easily form a gap into which the thermometer sensing part can be inserted is formed on any part of the outer wall of the burnout container 11 by pressing the thermometer sensing part. .

  In the first embodiment, as shown in FIG. 1, cross-shaped through-cuts 21 or bottomed grooves 22 in which four straight lines extend radially around the base point are formed in the top wall 11 r of the burnout vessel 11. In this way, the weakened portion 20 that allows the thermometer sensing portion to be inserted around the through cut 21 or the bottomed groove 22 is provided. As shown in FIG. 2, the through-cut 21 can be formed by incising an elongated slit that penetrates the ceiling wall 11 r inward and outward. The opening width of each straight line constituting the through cut 21 is preferably as small as possible (for example, about 0.1 to 0.5 mm).

  As shown in FIG. 3, the bottomed groove 22 can be formed thinner than other portions by cutting or pressing a part of the top wall 11r (pressing a cross-shaped punch). The bottomed groove 22 can also be formed on the back surface (inner surface) of the top wall 11r, but in this case, it is difficult to grasp the location of the fragile portion 20 from the outside, so it is provided on the surface (outer surface) of the top wall 11r. preferable. Moreover, it is preferable that the depth of the bottomed groove 22 is as deep as possible, in other words, the thickness of the bottom wall of the bottomed groove 22 is as thin as possible (for example, about 0.1 to 0.5 mm). This is because the thinner the bottom wall of the bottomed groove 22, the smaller the force that breaks through the bottom wall when pressing the thermometer sensing part. The width of each straight line constituting the bottomed groove 22 may be approximately the same as that of the through cut 21.

  4 and 5 show that the explosive charge 10 using such a burnout container 11 presses the sensitive part of the thermometer T against the center of the fragile part 20 when used to shoot a bullet. As described above, the top wall 11r around the through-cut 21 or the bottomed groove 22, that is, the fragile portion 20 can be expanded and the sensitive portion of the thermometer T can be easily inserted into the propellant 10. Thereby, the temperature of the propellant 12 can be directly and accurately measured. In addition, when the weak part 20 by the bottomed groove | channel 22 is formed, it is necessary to press the sensitive part of the thermometer T more strongly than the case of the weak part 20 by the penetration notch 21. FIG.

(Modification)
As mentioned above, although typical embodiment of this invention was described, this invention is not restricted to this, A various deformation | transformation is possible. For example, in the first embodiment, the fragile portion 20 is provided on the top wall 11r of the burnout container 11, but the fragile portion 20 may be provided on any wall surface as long as it is the outer wall of the burnout vessel 11. Specifically, it can be provided on the bottom wall 11f of the burnout container 11 as in Embodiment 2 shown in FIG. 6, or can be provided on the side wall 11s of the burnout container 11 as in Embodiment 3 shown in FIG. You can also.

  Further, the shapes of the through cut 21 and the bottomed groove 22 are not limited to the cross shape as in the first embodiment, and various shapes can be adopted. Specifically, there may be a plurality of (two or more) straight lines extending radially from the base point, and the number is not limited to four. For example, as shown in the fourth embodiment shown in FIG. 8, three straight lines extend radially around the base point, and as shown in the fifth embodiment shown in FIG. 9, six straight lines center around the base point. It can also be set as the shape extended to. In these cases including the first embodiment, it is preferable that the diameter of the fragile portion 20 is slightly larger than the diameter of the thermometer sensing portion. Specifically, it is preferable that the diameter of the fragile portion 20 is about 105 to 120% with respect to the diameter of the thermometer sensing portion. In addition, the diameter of the sensitive part of the thermometer for general projectile charges is about 5-10 mm. When the diameter of the fragile portion 20 is equal to or smaller than the diameter of the thermometer sensing portion, the thermometer sensing portion cannot be inserted. On the other hand, if the diameter of the fragile portion 20 is large, it becomes easy to insert the thermometer sensing portion, but if it is larger than necessary, the thermometer is easily detached during temperature measurement, and the propellant 12 spills from the gap. The danger is also great. If the diameter of the fragile portion 20 is about 105 to 120% with respect to the diameter of the thermometer sensing portion, there is also an advantage that the thermometer is held in a state of being measured.

  Further, the through-cut 21 and the bottomed groove 22 are formed in an I-shape in which two straight lines extend in the opposite direction by 180 ° around the base point as in the sixth embodiment shown in FIG. Like the form 7, it can also be set as the V shape where two straight lines extend in a different direction centering on a base point. When the penetration cut 21 or the bottomed groove 22 is I-shaped, the fragile portion 20 is elliptical, so the length of the I-shape is about 150 to 200% with respect to the diameter of the thermometer sensing portion. It is preferable. On the other hand, when the penetration cut 21 or the bottomed groove 22 is V-shaped, a portion surrounded by the V-shape becomes the tongue-shaped weak portion 20. In this case, the diameter of the V-shaped inscribed circle is preferably about 105 to 120% with respect to the diameter of the thermometer sensing part.

  Further, the through cut 21 and the bottomed groove 22 may be U-shaped as in the eighth embodiment shown in FIG. 12, or may be U-shaped as in the ninth embodiment shown in FIG. Also in these cases, the portion surrounded by the U-shape or the U-shape is the tongue-like weak portion 20. The U-shaped or U-shaped width is about 100 to 105% with respect to the diameter of the thermometer sensing part, and the U-shaped or U-shaped depth is about 105 to 120% with respect to the diameter of the thermometer sensing part. It is preferable to do. In addition, when the through-cut 21 and the bottomed groove 22 are V-shaped, U-shaped, or U-shaped, the direction is not particularly limited, and in addition to the direction shown in each drawing, the radially inward and the radially outward It can also be formed.

  In the second embodiment in which the fragile portion 20 is provided on the bottom wall 11f of the burnout container 11 and the third embodiment in which the fragile portion 20 is provided on the side wall 11s of the burnout vessel 11, the through-cut 21 or the bottomed groove 22 is implemented. It can also be made into the shape like form 4-9.

  Further, the fragile portion 20 formed by the through-cut 21 and the bottomed groove 22 can be applied not only to the long-range projectile 10 having the through-hole 14 at the radial center but also to the short-range projectile. . Here, as shown in FIG. 14, the short-range propellant 30 is greatly different from the long-range propellant 10 in that the through hole is not provided in the center in the radial direction. Inside, the propellant 12 and the igniting agent 15 are accommodated at the end of the top wall 31r. The burnout container 31 here includes a hollow bottomed cylindrical storage case 31a and a lid 31b that closes the top opening of the storage case 31a. A plurality of ignition holes 32 for igniting the igniting agent 15 are formed in the lid 31b, and each of the ignition holes 32 is sealed with a sealing material made of a metal foil such as a tin foil.

In addition, when forming the fragile part 20 by the penetration cut 21 or the bottomed groove 22 in the propellant charge 30 having the above-described configuration, it is provided on the outer wall other than the top wall 31r in the burnout container 31, that is, on the side wall 31s or the bottom wall 31f. This is because even if the fragile portion 20 is provided on the top wall 31r, the thermometer sensing portion cannot be inserted due to the presence of the ignition powder 15. In addition, the shape of the penetration notch 21 or the bottomed groove | channel 22 can also be made into any shape like Embodiment 1, 4-9.
In addition, the description regarding the above-mentioned penetration cut 21 is a reference example.

10.30 Explosive charge 11.31 Burnout container 11a, 31a Housing case 11b, 31b Lid 11c Ignition cylinder 11f, 31f Bottom wall 11r, 31r Top wall 11s, 31s Side wall 12 Propellant 14 Through hole 15 Ignition charge 20 Vulnerable Part 21 Through-cut 22 Bottomed groove 100 Bullet 110 Gun barrel T Thermometer

Claims (4)

It is for a projectile charge for firing a bullet in a gun, and is a hollow burnout container that contains a propellant inside,
The outer wall, to allow inserting the sensing part of the thermometer for measuring the internal temperature, characterized in that a by that weak portion in bottom-equipped groove which is thinner than the other portions, burnout container. The burnout container according to claim 1, wherein the bottomed groove is formed in a shape in which a plurality of straight lines extend radially around a base point. The burnout container according to claim 1, wherein the bottomed groove is formed in a U shape or a U shape.   A firing charge for a firearm using the burnout container according to any one of claims 1 to 3.

Images