BULLET INCLUDING AN AIR-GUIDING RECESS

• US 20130180424A1
• Filed: 04/29/2011
• Published: 07/18/2013
• Est. Priority Date: 08/30/2010
• Status: Active Grant

• Current Assignee: Duretek Inc.
• Original Assignee: Duretek Inc.
• Inventors: Kim, Jun-Kyu
• Granted Patent: US 8,973,504 B2
• Time in Patent Office: Days
• US Class Current: 102/501
• CPC Class Codes: F42B 10/44 Boat-tails specially adapted for drag reduction

Abstract

The present invention relates to a bullet including an air-guiding recess, comprising: a head 20; and a tail 30 disposed behind the head 20, and including an odd number of air-guiding recesses 32 formed so as to be curved in the bottom and outer circumferential surfaces thereof. The air-guiding recess 32 is characterized by having a sloped bottom that increases in depth while progressing to the bottom surface of the tail 30. Accordingly, vortex is prevented from being generated at the rear side of the bullet, so as to significantly increase the effective range thereof and simultaneously improve accuracy when shooting same.

Claims

1. A bullet having air guiding recesses, comprising:

a head part; and

a tail part which is located at the rear side of the head part and formed with an odd number of air guiding recesses formed at outer and lower surfaces thereof to be curved,

wherein each of the air guiding recesses has an inclined bottom so that a depth of the air guiding recess is gradually increased toward the lower surface of the tail part.

2. The bullet according to claim 1, wherein each of the multiple air guiding recesses has an angle θ

with respect to a line which connects a center point C of the lower surface of the tail part and a center of the air guiding recess which is formed at the outer surface of the tail part.

3. The bullet according to claim 1, wherein each of the air guiding recesses has the same width over the outer and lower surfaces of the tail part.

4. The bullet according to claim 1, wherein three air guiding recesses are formed at the outer and lower surfaces of the tail part so as to be spaced apart from one another at regular intervals.

5. The bullet according to claim 2, wherein each of the air guiding recesses has the same width over the outer and lower surfaces of the tail part.

6. The bullet according to claim 2, wherein three air guiding recesses are formed at the outer and lower surfaces of the tail part so as to be spaced apart from one another at regular intervals.