Abstract

The present invention relates to a bullet with an increased effective range. The bullet includes a front end portion (10) having a hemispherical shape, a recess portion (20) connected to a rear end of the front end portion (10) and having a curved surface that is recessed inward, an inclined portion (30) connected to a rear end of the recess portion (20) and inclined at a predetermined angle (A) with respect to a horizontal line, a stepped portion (40) connected to a rear end of the inclined portion (30) and inclined at a predetermined angle (A′) with respect to the horizontal line, and fluid inducing grooves formed from the rear to a rear end surface of the bullet (1). Thus, when the bullet passes through underwater, super cavitation may be more effectively generated and maintained for even longer to significantly increase the effective range of the bullet.

IPC Classes  ?

• F42B 10/46 - Streamlined nose conesWindshieldsRadomes
• F15D 1/00 - Influencing the flow of fluids
• F42B 10/44 - Boat-tails specially adapted for drag reduction
• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor
• F42B 10/38 - Range-increasing arrangements
• F42B 33/14 - Surface treatment of cartridges or cartridge cases

Abstract

The present invention relates to a warhead having an improved effective range, comprising: a hemispherical front end portion (10); a concave portion (20) connected to a rear end of the front end portion (10) and having a curved surface concaved inward; an inclined portion (30) connected to a rear end of the concave portion (20) and slantly formed a predetermined angle (A) with respect to the horizontal line; a step portion (40) connected to a rear end of the inclined portion (30) and slantly formed a predetermined angle (A') with respect to the horizontal line; and three fluid guiding grooves (50) formed over a rear edge and a rear end surface of the warhead. When the warhead passes through water, the configuration of the present invention can further effectively generate and long maintain a supercavitation state, thereby greatly improving an effective range of the warhead.

IPC Classes  ?

• F42B 10/38 - Range-increasing arrangements
• F42B 10/46 - Streamlined nose conesWindshieldsRadomes
• F42B 10/44 - Boat-tails specially adapted for drag reduction
• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor
• F15D 1/00 - Influencing the flow of fluids

Abstract

The present invention relates to a bullet having a bullet surface fluid inflow path and a manufacturing method therefor, to forcibly flow in fluid flowing along the bullet surface through a surface fluid inflow path of a bullet lateral surface, which starts from one side surface of the bullet, so as to reduce the amount of fluid flowing along the bullet surface such that surface friction force is reduced, and a vortex generated at a bullet base part is removed while the influent fluid is discharged to the center portion of a bullet base, thereby reducing resistance caused by the surface friction force and the vortex, so as to increase an accuracy rate and an effective range. In addition, in the coupling of a core, made from various materials, to wing bodies, the core can be separated during flying if the core has a high specific gravity, but the present invention applies a connection method for promoting natural fixed-coupling by allowing latch-shaped engraved part, having a head part coupled to a wing part and formed by separating the head part, to be formed such that the surface of the wing part is slightly compressed and deformed inwards by a rifling part protruding from the inside of a gun (cannon) barrel and a copper alloy part is pressed into an engraved latch part, thereby enabling simple manufacturing during manufacturing.

IPC Classes  ?

• F42B 10/34 - Tubular projectiles
• F42B 10/46 - Streamlined nose conesWindshieldsRadomes
• F42B 10/44 - Boat-tails specially adapted for drag reduction
• F42B 12/02 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor
• F15D 1/00 - Influencing the flow of fluids

Abstract

The present invention relates to a prefabricated warhead comprising: a front assembly (10) having a streamlined front end part (11), and a fitting part (12) integrally formed at the rear end of the front end part (11); and a rear fixing body (20) positioned at the rear of the front assembly (10) and having a fitting part accommodating groove (22), which is formed therein, and into which the fitting part (12) is inserted, and can manufacture the warheads at low cost and can also increase an accuracy rate and an effective range since the warhead is manufactured in a prefabricated form.

IPC Classes  ?

• F42B 12/02 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
• F42B 30/04 - Rifle grenades
• F42B 30/08 - Ordnance projectiles or missiles, e.g. shells
• F42B 33/00 - Manufacture of ammunitionDismantling of ammunitionApparatus therefor
• F42B 10/42 - Streamlined projectiles
• F42B 12/74 - Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body