CN101929826A

CN101929826A - Long-tail type rifle grenade

Info

Publication number: CN101929826A
Application number: CN2009101283420A
Authority: CN
Inventors: 强晓明
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-30
Filing date: 2009-03-30
Publication date: 2010-12-29

Abstract

The invention relates to a rifle grenade which can increase the initial speed and the range by one time, has quite simple structure and is provided with a slender rod (a grenade tail) which is connected with a fighting part, provided with a sealing device at the tail end and used as a part for simultaneously bearing the powder gas thrust and providing flight stability.

Description

Long-tail type rifle grenade

Technical field

The present invention relates to a kind of new structure and the propulsion mode of rifle grenade.

Background technology

Rifle grenade is a kind of super calibre ammunition with rifle and blank cartridge or bullet (with respect to blank cartridge, to call live shell in the following text) emission.The common structure of existing rifle grenade is that the warhead back connects a hollow tail pipe, and the tail pipe end has missile wing.During emission, tail pipe packs into usually the emission bar that is made of one with the gun barrel front end.When using the blank cartridge emission, gun propellant combustion generates gas (hereinafter to be referred as powder gases) and directly pours tail pipe, promotes rifle grenade.Also prisoner's ereisma should be set in the tail pipe of the rifle grenade of use live ammunition.The live shell bullet leaves and promptly enters prisoner's ereisma behind the bore and captured by it, and self kinetic energy is transmitted sub-fraction give rifle grenade.The powder gases that comes with bullet also enters tail pipe thereupon, promotes rifle grenade as main motive force.

The rifle grenade of existing use blank cartridge emission though the quantity of propellant powder, composition, shape have the free degree of sizable selection, can take this to increase the propelling strength to rifle grenade.But the maximum kick that the amplitude that propulsive force increases can bear when being limited by soldier's shoot from shoulder.

Though existing rifle grenade structure with live ammunition is complicated, because reduced the bullet kind (blank cartridge) that the soldier carries, so become the main flow of rifle grenade development in recent years gradually.

The common defects of existing rifle grenade is not high to the propellant powder energy utilization ratio, and propulsive force is little, and initial velocity is low, and range is near.The initial velocity that two kinds of rifle grenades of blank cartridge emission and live ammunition can reach at present is close.Breaking the first antipersonnel rifle grenade with China DQJ03 formula 40mm that represents current international most advanced level is example, full weight 370g (wherein warhead nearly weighs 270g), the about 72m/s of initial velocity, the about 970J of thorax mouth kinetic energy.Another shortcoming of existing rifle grenade is that volume is bigger, influences individual soldier's portable quantity.

Summary of the invention

Can only mainly utilize the powder gases expansion energy in expansion later stage when launching at existing rifle grenade, capacity usage ratio is low, initial velocity is little, and weak point such as volume is bigger, the invention provides a kind of new construction of rifle grenade, make rifle grenade can be subjected to the promotion of powder gases from the burning initial stage, thereby improve the propellant powder energy utilization ratio greatly, promoted initial velocity and range significantly.And bring and reduce volume, weight, improve portable, increase the individual soldier greatly and take bullet quantity, improve fire accuracy, and the emission vestige does not wait other series of advantages near " three have ".

The invention provides the long tail type structure (below get its Chinese phonetic alphabet prefix letter abbreviate " CW " formula structure as) of rifle grenade." CW " formula rifle grenade basic structure is seen Fig. 1, connects the elongated projectile tail (2) that a diameter is slightly less than bore in rifle grenade warhead (1) back, and the projectile tail end is provided with and prevents or reduce the sealing device that powder gases spills.Projectile tail separates with warhead at ordinary times, and bore is inserted in the back that is combined as a whole before the emission.Scribble a circle elastic coating layer (3) (material is rubber or plastics) behind projectile tail and the warhead junction with fixing rifle grenade.Blank cartridge is still used in emission, and its end was near the blank cartridge front end after projectile tail inserted bore.Therefore, in the emission process, projectile tail bears powder gases in whole bore almost thrust.Projectile tail is simultaneously as rifle grenade guide element moving in the emission process.During flight, projectile tail is then as the stable element of rifle grenade.

The structure of the sealing device of projectile tail end can have three kinds of different citation forms.First kind of form is " vortex groove " formula structure.Promptly be provided with multiple tracks vortex groove (6) at the projectile tail end, promptly can form the cannelure of eddy current, basic structure is seen Fig. 2.When powder gases flows through the vortex groove place, form strong eddy current, hinder the preceding ease of follow-up gas.The projectile tail end has a section of vortex groove also can manufacture independent one section, links to each other with projectile tail again.Its material of part that projectile tail has vortex groove must be able to tolerate the high temperature of powder gases, so should be steel or the anodized aluminium alloy of process.Second kind of form of sealing device is " broad-mouthed receptacle for holding liquid expands " formula structure, and promptly at the terminal bloated broad-mouthed receptacle for holding liquid (7) of red copper matter that connects a cup-shaped thick bottom and thin rim of projectile tail, its basic structure is seen Fig. 3.After powder gases is washed blank cartridge open and is sealed, at first enter bloated broad-mouthed receptacle for holding liquid, its high pressure force the broad-mouthed receptacle for holding liquid that expands thin on radially swell, and outwards upset embeds rifling, seals the path of ease before the powder gases.The broad-mouthed receptacle for holding liquid that expands can have rotation with respect to projectile tail.In order to reduce the frictional force between broad-mouthed receptacle for holding liquid and projectile tail that expands, faying face between the two can scribble lubriation material.The third form of sealing device is the fabricated structure that vortex groove combines with bloated broad-mouthed receptacle for holding liquid, and promptly the projectile tail least significant end is a bloated broad-mouthed receptacle for holding liquid, has vortex groove on the projectile tail of the broad-mouthed receptacle for holding liquid front of expanding.The used blank cartridge of " CW " formula rifle grenade should use the thicker rifle propellant powder of burning zone.

Compare with existing rifle grenade, advantage of the present invention mainly shows in the following areas: 1, powder gases energy utilization ratio in the thorax is increased substantially, under the close condition of warhead weight and recoil size, initial velocity can be brought up to about 2 times even higher, and thorax mouth kinetic energy can be brought up to about 4 times.Therefore 2, projectile tail is compared with missile wing with the tail pipe of existing rifle grenade, and weight is less, and under the constant situation of warhead weight, full cartridge weight descends to some extent.3, during portable, warhead and projectile tail can separately carry, and volume is less, is convenient to increase the individual soldier and takes bullet quantity.4, the inner trajectory process is more stable, and guiding length is bigger, and the gap between projectile tail and bore can be accomplished less, so fire accuracy can improve.5, initial velocity increases substantially the simplification that can cause gunsight, the special-purpose rear sight that existing every the bullet of rifle grenade of cancellation will specially be joined.6, because more abundant to the utilization of powder gases energy in the thorax, temperature when powder gases goes out thorax, pressure, speed descend greatly, therefore all minimum, the sound of flame, the flame dirt in " CW " formula rifle grenade when emission is equivalent to staff and claps one's hands, and the emission vestige is not near " three have ".

Description of drawings

Fig. 1---" CW " formula rifle grenade basic structure schematic diagram

Fig. 2---" vortex groove " formula sealing device basic structure schematic diagram

Fig. 3---" broad-mouthed receptacle for holding liquid expands " formula sealing device basic structure schematic diagram

Description of reference numerals

1---rifle grenade warhead

2---projectile tail

3---the elastic coating layer

4---gun barrel

5---vortex groove

6---broad-mouthed receptacle for holding liquid expands

The specific embodiment

Among Fig. 1, projectile tail (2) adopts steel pipe or aluminium alloy rod, and diameter is slightly less than the bore of rifle, to be threaded into or inserted mode is connected with rifle grenade warhead (1).Projectile tail outer surface behind the junction scribbles a circle elastic coating layer (3) (material is rubber or plastics) with fixing rifle grenade.The projectile tail end is provided with sealing device, and the structure of sealing device can be " vortex groove " formula structure or " broad-mouthed receptacle for holding liquid expands " formula structure, or " vortex groove " fabricated structure of combining with " broad-mouthed receptacle for holding liquid expands ". launch the thicker rifle propellant powder of used blank cartridge use burning zone.

Claims

1. one kind by warhead with bear powder gases thrust and guarantee the rifle grenade that the parts of flight stability are formed.It is characterized in that having one can insert bore, at the bottom of thorax, and terminal have the elongate rod (projectile tail) that can stop or weaken the sealing device of letting out before the powder gases, bear the effect of bearing powder gases thrust and flight stability being provided simultaneously.

2. rifle grenade according to claim 1, the sealing device that it is characterized in that projectile tail are the cannelures that multiple tracks is used to form eddy current.

3. rifle grenade according to claim 1, the sealing device that it is characterized in that projectile tail also can be the cup-shaped red copper matter " broad-mouthed receptacle for holding liquid expands " of a thick bottom and thin rim.

4. according to the described rifle grenade of claim 1, the sealing device that it is characterized in that projectile tail also can be expand broad-mouthed receptacle for holding liquid after, vortex groove is fabricated structure the preceding.