Ammunition and explosives – Projectiles – Fragmenting
Patent
1992-11-10
1994-07-05
Tudor, Harold J.
Ammunition and explosives
Projectiles
Fragmenting
102517, F42B 1256
Patent
active
053257871
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention concerns the technical field of projectiles used to destroy, at a distance, a target of some description, more generally one of an armored nature.
This invention concerns projectiles of the armor-piercing type.
Destruction of a target at a great distance of a target, and more particularly of an armored target, requires high firing accuracy as well as considerable terminal effectiveness.
High firing accuracy can be obtained utilizing projectiles, for example of the small-caliber, armor-piercing type, which because of their design, develop a high level of impact energy while offering remarkable firing accuracy during their external ballistic trajectory.
Terminal destructive effectiveness can be obtained with the use of an explosive projectile, in other words one containing inside it a charge causing the projectile to explode at the moment of impact.
Utilization of a combination of these two characteristics might be envisaged as a way of creating a shell or projectile capable of meeting the criterion of a capacity for accurate destruction of an armored targets at great distance.
However, creation of a projectile combining these two characteristics is relatively costly, and involves handling, an explosive during manufacture, which must be strictly monitored to prevent untimely explosions.
The presence of such a charge also entails the same problems in terms of storing, handling, and assembling projectiles in or on facilities responsible for firing them.
SUMMARY OF THE INVENTION
An object of the invention is to meet the above objective by proposing a new projectile specifically designed to possess the firing accuracy characteristics of an armor-piercing projectile and the characteristics of considerable terminal effectiveness, without necessarily entailing the presence of an onboard explosive charge.
To achieve the above objectives, the projectile according to the invention is characterized by possessing a structure for fragmenting the body upon impact including a blind bore delimited by the body and occupied by a mass of compressed material subjecting the body to a fragmentation prestress.
BRIEF DESCRIPTION OF THE DRAWINGS
Various other characteristics will become evident from the description given below with reference to the attached drawing which shows, as a nonlimiting example, an embodiment of the object of the invention.
The single FIGURE is a sectioned front view of an embodiment of the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The projectile as depicted comprises a body 1 made of a dense material, such as for example sintered tungsten, depleted uranium, or tungsten carbide.
Body 1 is designed in the usual manner in terms of length and caliber, and has a longitudinal axis, or axis revolution, x--x'.
Body 1 is associated with an armor-piercing head 2, also made of a dense material such as for example a treated steel. Head 2 is surrounded and covered by a ballistic shroud made of a malleable material having good air penetration characteristics by virtue of its shape and nature, made for example of light alloy or copper alloy. Ballistic shroud 3 can be attached onto body 1 installed, by crimping or shrink-fitting, so as then to have a cut-off anterior portion. Shroud 3 may also be attached directly onto head 2 when the latter is coupled, by any appropriate means, to body 1, as is the case with the object depicted.
Body 1 and head 2 are attached by a mechanical attachment 4 which comprises, in a preferred but non-limiting embodiment, a threaded terminal part 6 extending from rear face 7 of head 2, having a diameter which can be equal to or less than that of head 2.
The mechanical attachment also comprises a tapped thread 8 which is arranged starting from anterior part 1a of body 1, at the mouth of a cylindrical bore 9. Cylindrical bore 9 is formed along axis x--x' within body 1. Tapped thread 8 is attachment by traditional threading, either left- or right-handed.
The invention provides for body 1 to be subjected to a fragmentation pr
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patent: 4770102 (1988-09-01), Bisping et al.
patent: 4774889 (1988-10-01), Wallow et al.
patent: 4854242 (1989-08-01), Katzmann
Giat Industries
Tudor Harold J.
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