RU2413922C2 - Kinetic sectional projectile "kimry" - Google Patents

Kinetic sectional projectile "kimry" Download PDF

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Publication number
RU2413922C2
RU2413922C2 RU2009121126/11A RU2009121126A RU2413922C2 RU 2413922 C2 RU2413922 C2 RU 2413922C2 RU 2009121126/11 A RU2009121126/11 A RU 2009121126/11A RU 2009121126 A RU2009121126 A RU 2009121126A RU 2413922 C2 RU2413922 C2 RU 2413922C2
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Russia
Prior art keywords
projectile
frame
annular
mass
pallet
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RU2009121126/11A
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Russian (ru)
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RU2009121126A (en
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Владимир Алексеевич Одинцов (RU)
Владимир Алексеевич Одинцов
Сергей Сергеевич Егоркин (RU)
Сергей Сергеевич Егоркин
Алексей Алексеевич Кеменов (RU)
Алексей Алексеевич Кеменов
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Владимир Алексеевич Одинцов
Сергей Сергеевич Егоркин
Алексей Алексеевич Кеменов
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Priority to RU2009121126/11A priority Critical patent/RU2413922C2/en
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Abstract

FIELD: weapons and ammunition.
SUBSTANCE: projectile comprises vessel, set of finished destructive agents, trajectory detonating fuse, receiver of commands, charge of vessel destruction and master detachable tray. Charge of destruction is arranged along whole length of vessel-frame. At the external side the vessel-frame is equipped with circular ribs, between which there are circular units of finished destructive agents. In back part of vessel there is a rigid pen stabiliser. On inner surface of tray there are circular grooves applied as engaged with circular ribs of body.
EFFECT: increased accuracy of a projectile hitting the target.
11 cl, 6 dwg

Description

The invention relates to ammunition, and more particularly to kinetic beam projectiles. These include shells containing a block of ready-made striking elements (GGE), the charge of which (powder or blasting) does not inform the block of additional axial speed, but performs essentially only the function of dispersing the GGE [1]. In foreign literature, such shells are referred to as AVM KETF (Air Burst Munition Kinetic Energy Time Fuze - air gap ammunition - kinetic energy - temporary fuse) or simply KETF. Known shell AHEAD of the Swiss company "Oerlikon-Contraves", containing the body, located in it a set of GGE, trajectory fuse and charge destruction of the body [2]. The projectile hits the target with an axial flow of GGE and is intended mainly to combat anti-aircraft targets (aircraft and guided missiles). The main disadvantages of the projectile are the large inert mass of the hull, which is not involved in hitting the target, but essentially performs only the function of a container for GGE, and the relatively low velocity of the projectile (~ 1000 m / s), which leads to a long flight time and, as a result, to a significant deviation of the projectile from the calculated trajectory.
The present invention addresses these drawbacks.
The technical solution consists in the fact that the projectile is a sub-caliber equipped with a detachable pallet, the destruction charge is located along the entire length of the housing, and on the outside the housing is equipped with annular ribs, between which there are annular HPE blocks, a rigid feather stabilizer is located in the rear of the housing, and in the composition of the projectile includes a leading split pallet, on the inner surface of which annular grooves are applied, which are in engagement with the annular ribs of the body.
Figure 1 shows the projectile in the Assembly with the pallet; figure 2 - subcaliber shell after separation of the pallet; figure 3 is a shell with a casing-frame step form, figure 4, 5 - options for pairing the casing-frame with a pallet; 6 is a diagram of the formation of an axial field of the type "disk".
The projectile of FIG. 1 comprises a frame body with a charge of BB 2 located in the internal cavity of the body. The outer surface of the frame body is provided with annular ribs 3, between which the annular blocks of the GGE are located 4. The ring blocks are made by pressing on the frame of the GGE in a mixture with a binder material, for example, hot cured phenolic resin or cold cured epoxy compound. To increase the strength of the block, a bandage tape or thread, for example, made of fiberglass, impregnated with the same binder material can be wound over it. GGE can be made of steel or heavy alloys based on tungsten or tantalum. The possibility of manufacturing GGE in the form allowing their tight packing in the assembly is provided. In the front part of the frame body, a head traction fuse 5 with a receiver 6 is installed. A rigid feather stabilizer 7 is installed in the rear part of the frame body.
On the casing-frame is installed a leading split pallet 8 having an external diameter equal to the caliber of the gun.
The pallet consists of two or three sectors, fastened with a copper band 9, which simultaneously serves as a seal. The inner diameter of the pallet is made with a sliding fit relative to the outer diameter of the ring blocks of the GGE. On the inner surface of the pallet marked annular grooves 10, which include the protruding edges of the annular ribs. It is planned to manufacture a pallet and frame body from light alloys, including those based on titanium, aluminum, and magnesium. Skew channels can be applied on the pallet 11. Torque transmission devices from the pallet to the frame body are not shown in FIG. 1.
Figure 2 shows the projectile in flight (after separation from the pallet). The ratio of the mass of the GGE to the mass of the sub-projectile should be at least 0.7.
Figure 3 presents the design of a projectile designed to create an expanded axial field of the GGE. The frame body has a stepped shape, which provides different C / M ratios for different ring blocks (C is the mass of the explosive charge, M is the mass of the block) and, therefore, different values of the radial velocity of the GGE:
Figure 00000001
,
where D is the explosive detonation velocity.
Ring blocks have different lengths, while the length of the block increases with an increase in its inner diameter. The ratio of the lengths of the blocks is selected from the condition of the optimal distribution of the GGE over the annular zones of the “disk” type field. The same effect can be achieved by the fact that different ring blocks are made of GGE of different masses and different materials, for example steel and heavy alloy. As a rule, with an increase in the internal diameter of the block, the mass of the GGE decreases.
The frame body can also be made in the form of a finned cone, facing a large base to the head of the projectile, and in a more general case, in the form of a finned body of revolution with a given generatrix profile.
Figures 4, 5 show embodiments of pairing the annular ribs with the pallet without protruding the edges of the ribs above the surface of the annular blocks. Such schemes provide reduced air resistance to the flight of the projectile.
The design of the frame body can be made with longitudinal ribs (frames) connecting the annular ribs.
The projectile is as follows. Before a shot, the measured time to the target determines the flight time to the anticipated break point. This time is introduced in a contact or non-contact way into the trajectory fuse through the command receiver. When fired, the inertial load impinging on the GGE ring blocks is perceived by the ring ribs and transferred to the body, and through the edges of the ribs and ring grooves to the pallet. Thus, the pallet performs not only the function of guiding the projectile along the bore, but also the function of unloading the shell of the projectile from the inertial load of the GGE blocks. At the same time, the pallet prevents the radial expansion of the blocks due to lateral expansion and ensures their strength during the entire time the projectile moves along the barrel. In addition, the pallet protects the non-metallic surface of the projectile from the effects of powder gases.
The use of a sub-caliber circuit will reduce the mass of the projectile assembled with the pallet by about 2 ... 2.5 times compared with a standard caliber projectile and, therefore, with a fixed muzzle energy of the gun, increase the muzzle velocity by 1.4 ... 1.6 times. When the projectile moves along the bore due to the expiration of the products of the combustion of gunpowder through the slanted channels 11 of the pallet, the projectile is twisted, which is necessary to create a centrifugal force that separates the pallet and to compensate for the eccentricity of the projectile.
After the projectile leaves the barrel, the copper belt 9 is destroyed and the sectors of the pallet diverge under the action of centrifugal forces, while the edges of the annular ribs of the body exit from the annular grooves of the pallet.
When the projectile approaches the calculated point, the detonator causes detonation of the explosive charge, which leads to the expansion of the frame body and destruction of the ring blocks. In the design variant shown in Fig. 1, the average radial expansion velocity of the GGE blocks is 100 ... 150 m / s, which at a projectile's own velocity of 800 m / s provides a half-angle of the axial beam of 7.1 ... 10.6 °. With an average angle of 9 °, the radii of the cross sections of the GGE beam at ranges of 10, 20 and 30 m, respectively, will be 1.58, 3.16 and 4.74 m.
The action of the projectile shown in figure 3, characterized in that the ring blocks receive different radial speeds, which leads to the formation of the field of the GGE type "disk" (figure 4) (ν c - velocity of the projectile, ν R1 ... ν R2 - radial speeds various ring blocks).
The following is an example of the execution of a 125 mm kinetic beam projectile of domestic tanks T-72, T-80, T-90. The projectile is carried out in two versions - anti-personnel with a GPE mass of 0.5 g and anti-helicopter / anti-transport with a GPE mass of 3 g (the GPE is made of a tungsten-based heavy alloy).
Shell weight with pallet 12 kg
Muzzle Speed 140 m / s
Half-Don Weight (Titanium) 4 kg
Submunition mass 8 kg
Diameter of a projectile 80 mm
The total mass of the GGE 5.8 kg
The amount of GGE weighing 0.5 g 11600
The amount of GPE weighing 3 g 1930
The ratio of the mass of the GGE to the mass of the projectile 0.725
The relative mass of the projectile 15.6 kg / cm 3
The mass of the projectile is reduced by almost half compared with the standard 125 mm high-explosive fragmentation shell 3 HE 19, which has a mass of 23.2 kg [3]. This allows you to significantly increase the number of tank ammunition. With the number of ammunition of the T-90 tank, 43 shots, assuming that the ammunition consists only of rounds with a standard HE projectile with a mass of shot of 33.0 kg (shell weight with a powder charge of 9.8 kg), the total mass of the ammunition will be 1419 kg.
At the same time, a shot with the proposed projectile with the same shell weight will have a mass of 21.8 kg, and the number of ammunition will be 65 rounds, i.e. 1.5 times more.
The decrease in the relative mass of the projectile is of particular relevance in connection with the tendency to increase the caliber of a domestic tank gun to 135 mm [4] (in the West - to 140 mm). With geometric similarity, the relative increase in the mass of the shot will be (135/125) = 1.26, and therefore, the mass of a regular shot with an HE shell will be 41.6 kg, and the number of ammunition is 34 shots, i.e. significantly below the permissible level for tanks. At the same time, the mass of 135 mm of the shot with the proposed projectile will be 21.8 × 1.26 = 27.5 kg, i.e. the number of ammunition will be 1419 / 27.5 = 51 shots, which significantly exceeds the nominal number of ammunition of the T-90 tank.
The technical result of the invention is to increase the effectiveness of ammunition in the directions of accuracy and action at the target. A very important result is also an increase in projectile safety due to the fact that the explosive charge is reliably protected from bullets and fragments by a thick layer of GGE.
It should be noted that open shells, to which this kinetic projectile belongs, are currently considered to be very promising, primarily due to the emergence of new materials, including nanomaterials.
When the fuse is installed to detonate the projectile immediately after exiting the barrel, the projectile functions as a buckshot and is intended for self-defense of a tank at close range. The need to include a projectile shell in the tank’s ammunition has been proven by the experience of the Iraq war. In 2004, the 120 mm KhM1028 projectile was included in the ammunition tank of the Abrams tank, USA.
Literature
1. Odintsov V.A. Fragmentation-beam shells - ammunition of the XXI century // Ammunition and high-energy condensed systems. - 2008. - Issue. No. 2.
2. Odintsov V.A. The return of shrapnel. // Technology and weapons. - 1999. - No. 4, 7.
3. Odintsov V.A. Designs of shrapnel ammunition. Part II Artillery shells. Publishing House MSTU. Bauman. 2002.
4. Rastopshin M.M. Machine for the wars of the past // Independent Military Review, May 15-21, 2009, No. 16 (567).

Claims (11)

1. Kinetic beam projectile containing a housing with a set of ready-made striking elements located therein, a trajectory fuse with a command receiver and a shell destruction charge, characterized in that the case is made of sub-caliber, the destruction charge is located along the entire length of the shell body, from the outside of the case the frame is equipped with annular ribs, between which there are annular blocks of finished striking elements, a rigid feather stabilizer is located in the rear of the case, and a detachable lead is included in the shell Don, on the inner surface of which is applied to the annular grooves which are in engagement with the annular ribs of the housing.
2. The projectile according to claim 1, characterized in that the ring blocks are made by pressing on the body frame of the finished striking elements in a mixture with a hot or cold cured binder.
3. The projectile according to any one of claims 1, 2, characterized in that a bandage tape or thread soaked in a binder material is wound on the outer surface of the annular block.
4. The projectile according to claim 1, characterized in that the inner diameter of the pallet is made with a sliding fit relative to the outer diameter of the ring blocks of the finished striking elements.
5. The projectile according to claim 1, characterized in that the frame body is made with a stepped shape.
6. The projectile according to claim 5, characterized in that the length of the annular block increases with an increase in its inner diameter.
7. The projectile according to claim 5, characterized in that the various annular blocks are made of ready-made striking elements of different masses and different materials, while, as a rule, the mass of the finished striking element decreases with an increase in the inner diameter of the ring block.
8. The projectile according to claim 1, characterized in that its frame body is made with longitudinal ribs connecting the annular ribs.
9. The projectile according to claim 1, characterized in that the casing is made in the form of a finned cone facing a large base to the head of the projectile, and in the more general case in the form of a finned body of revolution with a given generatrix.
10. The projectile according to claim 1, characterized in that the pallet and the frame body are made of light alloy.
11. The projectile according to claim 1, characterized in that the ratio of the mass of the finished striking elements to the mass of the sub-projectile should be at least 0.7.
RU2009121126/11A 2009-06-03 2009-06-03 Kinetic sectional projectile "kimry" RU2413922C2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2622562C1 (en) * 2016-03-25 2017-06-16 Федеральное государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики" (ФГУП "РФЯЦ-ВНИИЭФ") Fragmentation ammunition with three-dimensional destruction field

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2622562C1 (en) * 2016-03-25 2017-06-16 Федеральное государственное унитарное предприятие "Российский Федеральный ядерный центр - Всероссийский научно-исследовательский институт экспериментальной физики" (ФГУП "РФЯЦ-ВНИИЭФ") Fragmentation ammunition with three-dimensional destruction field

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Effective date: 20110604