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A ring-shaped bullet holder for light gas guns to launch long-rod projectiles

A technology of light gas guns and projectiles, which is applied in the field of projectile rests and ring-shaped projectile rests. It can solve the problems of not keeping the posture of projectiles well and obvious angle of attack, etc., so as to avoid the angle of attack, large stress area, and load-bearing Lego effect

Active Publication Date: 2021-12-31
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, although the structure of the cup-shaped bullet rest is simple, it cannot maintain the attitude of the projectile body well when firing long-rod bullets, and there is often an obvious angle of attack after exiting the muzzle.

Method used

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  • A ring-shaped bullet holder for light gas guns to launch long-rod projectiles
  • A ring-shaped bullet holder for light gas guns to launch long-rod projectiles
  • A ring-shaped bullet holder for light gas guns to launch long-rod projectiles

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Experimental program
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Embodiment 1

[0029] This embodiment provides a ring-shaped support for launching a long-rod projectile from a light gas cannon, which can effectively solve the problem of hypersonic launch of a projectile with a large aspect ratio (the aspect ratio is greater than 10).

[0030] image 3 As shown, the annular bullet holder includes: a polymer bullet holder 2 and a metal bullet holder 3; both the polymer bullet holder 2 and the metal bullet holder 3 are hollow annular structures with a central through hole along its own axis; The bullet holder 2 and the metal bullet holder 3 are connected coaxially at a set cone angle to form a ring-shaped whole; the polymer bullet holder 2 and the metal bullet holder 3 are connected at a set cone angle, which can reduce the impact of the shock wave on the metal bullet holder 3 on the bearing material of the bullet bottom. The role of the bomb bottom shock wave bearing capacity can be increased by more than 50%. The inner chamber of this ring-shaped whole i...

Embodiment 2

[0045] On the basis of above-mentioned embodiment 1, when firing speed is not higher than Mach 5 (being less than or equal to Mach 5), tooth-shaped grooves can be set on the inner peripheral surface of metal bullet rest 3 instead of ceramic coating 4, on bullet body 1 The same toothed groove is arranged on the surface to coincide with the toothed groove on the inner surface of the metal bullet holder 3; according to the firing speed, the tooth width is 5% to 10% of the diameter of the projectile body 1, and the tooth height is 5% to 10% of the diameter of the projectile body 1. %, the reactive force of the frictional force on the contact surface of the missile body 1 and the metal bullet holder 3 provides the active force for driving the missile body 1 during launching.

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Abstract

The invention provides a ring-shaped bullet holder for launching a long-rod projectile from a light gas cannon, which can load a projectile with a large aspect ratio above Mach 10 and meets the requirements for launching a projectile with a large aspect ratio from a light gas cannon. The annular bullet holder includes: a polymer bullet holder and a metal bullet holder; wherein the polymer bullet holder and the metal bullet holder are both hollow ring structures with a central through hole along its own axis; the polymer bullet holder and the metal bullet holder pass through the cone The ring-shaped integral inner cavity formed after the coaxial butt joint of the shape and surface is the projectile body accommodating cavity; the inner peripheral surface of the center through hole of the metal bullet holder is provided with a ceramic coating, and the ceramic coating and the projectile located in the projectile accommodating cavity The reaction force of friction between them provides the force to drive the projectile during launch. The force-bearing surface of the ring-shaped bullet rest is on the contact surface between the inner surface of the metal material bullet rest and the projectile body. Compared with the cup-shaped bullet rest, the force-bearing area is larger and the bearing capacity is higher.

Description

technical field [0001] The invention relates to a bullet holder, in particular to a ring-shaped bullet holder used for launching a long-rod projectile from a light gas gun, and belongs to the technical field of hypersonic to ultra-high-speed launch. Background technique [0002] In recent years, the world's major powers have further intensified competition in the field of hypersonic technology, and Russia's hypersonic weapons have taken the lead in entering the deployment stage. In this regard, on the one hand, the United States has accelerated the pace of the actual combat of offensive hypersonic weapons, and on the other hand, it has started to promote the demonstration and construction of hypersonic weapon defense systems. [0003] The cruising speed of hypersonic cruise missiles can usually reach Mach 5-8, and the speed of boost-gliding missiles can reach Mach 10-15 during the gliding phase. Therefore, ordinary artillery and first-class light gas guns can no longer be si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F41F1/00
CPCF41F1/00
Inventor 张庆明刘文近薛一江陆阳予龙仁荣马晓荷
Owner BEIJING INSTITUTE OF TECHNOLOGYGY