RU24279U1 - Sub-caliber element - Google Patents

Abstract

A sub-caliber element containing a striker, characterized in that the supporting ring with a truncated cone-shaped cross-sectional profile, facing a smaller base with a diameter equal to the diameter of the striker, in the direction of movement of the sub-caliber element, is larger than the diameter of the striker but less than the caliber of the barrel.

Description

-j- o 01 i-caliber element

The utility model relates to test equipment. The primary area of use is the study of the high-speed interaction of bodies, for example, the impact of fragments of “space debris on orbiting space objects.

In the practice of studying the high-speed interaction of bodies, the throwing of sub-caliber elements (projectiles) is carried out using barrel ballistic installations (see the book under the editorship of N.A. Zlatin and G.I. Mishin "Ballistic installations and their application in experimental studies, ed." Science M, 1974t, p. 109 .. .112).

The drummer is placed in the lead pan, and the assembly accelerates in the barrel of the throwing unit, after which the drummer is separated from the pan.

According to formula 2.40, p. 110 of the above information source, the throwing speed can be the higher, the larger the contact surface area of the drummer and the smaller the mass of the sub-caliber element.

Known "Self-lubricating saber projectile, US patent No. 4239006, MTIKF42B 13/16, publ. 12/16/80

The device consists of a sub-caliber projectile (projectile) installed in a monolithic plastic pallet, which is a cylindrical cage, which has a rear closed end and an open front, having a cylindrical cavity under the projectile.

The disadvantage of this device is the impossibility of obtaining high speeds, since the area of the contact surface of the projectile-pallet is limited by the cross-sectional area of the projectile.

The closest (prototype) to the claimed sub-caliber element is "High-speed sub-caliber projectile, US patent No. 4574703 IPC 4 F42B 13/16, publ. 11/03/86

Small caliber projectile contains a core mounted in a recess on the front of a cylindrical tray made of polymer material. A solid base is located in the pallet behind the core.

In the prototype, the area of the contact surface of the core-pallet is the area of the base, which can be increased by changing its diameter. The disadvantage of this device is the use of the base as a separate structural element made of high strength material (most likely metal),

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IPC 6 F42B 14/06

which significantly increases the mass of the missile element (core mass + base mass), which, ultimately, does not significantly increase the throwing speed

When implementing a sub-caliber element, the task of creating a missile element with high bearing capacity is solved. The technical result consists in increasing the contact surface area of the striker - pallet, which makes it possible to achieve high throwing speeds

The technical problem is solved as follows

Podkalibernoe element contains a firing pin with a hard

a support ring fixed to it coaxially with a truncated cone-shaped cross-sectional profile, facing a smaller base with a diameter equal to the diameter of the hammer, in the direction of movement of the sub-caliber element. The diameter of the larger base of the cone is made larger than the diameter of the hammer, but smaller than the barrel caliber

The inventive subcaliber element is characterized by a combination of new design features

a support ring is fixed on the drummer,

the support ring is fixed rigidly,

the support ring is fixed coaxially to the drummer,

the support ring is made with a cross-sectional profile in the form of a truncated cone facing a smaller base, with a diameter equal to the diameter of the striker, in the direction of movement of the sub-caliber element, the diameter of the larger base of the cone is larger than the diameter of the striker,

The diameter of the larger base of the cone is made smaller than the caliber of the barrel. The support ring fixed on the drummer provides an increase in area.

contact surface drummer - pallet

Rigid fastening of the support ring on the drummer allows, in contrast to the prototype, to use it together with the rear end surface of the drummer as part of the contact surface and, therefore, in relation to the prototype with equal contact surfaces, a sub-caliber element with a lower mass with the same masses of the projectiles

The implementation of the support ring with a cross-sectional profile in the form of a truncated cone facing a smaller base, with a diameter equal to the diameter of the striker, in the direction of movement of the sub-caliber element, and a diameter of a larger base larger than the diameter of the striker, can minimize the mass of the support ring while ensuring the conditions of equal strength of the radius.

The diameter of the larger base of the support ring smaller caliber barrel eliminates contact podkalibernogo element with the latter.

The utility model is illustrated in the drawing and photo illustrations.

In FIG. 1 shows an example of the execution of a sub-caliber element installed in the drive tray, in FIG. 2 is a photograph thereof, in FIG. 3 - shows the x-ray of the sub-caliber element after exiting the barrel of the propelling unit.

The sub-caliber element 1, which is installed when used in the driving pallet 2, contains a striker 3 with a support ring 4 rigidly coaxially attached to it with a truncated cone profile, facing a smaller base with a diameter equal to the diameter of the striker, in the direction of movement of the sub-caliber element. The diameter of the larger base of the cone is made larger than the diameter of the striker., But smaller than the caliber of the barrel.

The operation of the claimed sub-caliber element is as follows.

Podkalibernoe element 1, placed in the axial recess 5 on the front end surface 6 of the pallet 2, the pressure of the throwing gas is accelerated along the bore 7 of the throwing unit. In this case, the load perceived by the pallet 2 is reduced by connecting to the contact surface of the striker 3 an additional contact surface of the support ring 4, rigidly fixed to the striker 3, thereby ensuring the achievement of high throwing speeds. The pallet 2 centers the sub-caliber element 1 in the bore of the barrel 7, except that the supporting ring 4 touches the channel wall.

After the exit of the sub-caliber element 1 with the pallet 2 beyond the cut of the bore 7 of the throwing installation, the sub-caliber element goes forward due to the difference in the values of the ballistic coefficients. Placed on the flight path cutoff 8 delays the pallet 2 and passes through the hole podkalibernoe element 1.

The performance of the claimed sub-caliber element is confirmed by throwing its experimental prototypes with hypersonic speeds (see Fig. 2 ... 3)

Utility Model Formula

A sub-caliber element containing a striker,

characterized in that the supporting ring with a truncated cone-shaped cross-sectional profile fixed to the drummer is rigidly fixed coaxially to it, facing a smaller base with a diameter equal to the diameter of the hammer, in the direction of movement of the sub-caliber element, the diameter of the larger base of the cone is larger than the diameter of the hammer, but smaller than the barrel caliber.

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Claims (1)

A sub-caliber element containing a striker, characterized in that the supporting ring with a truncated cone-shaped cross-sectional profile, facing a smaller base with a diameter equal to the diameter of the striker, in the direction of movement of the sub-caliber element, is larger than the diameter of the striker but less than the caliber of the barrel.