Advanced aerodynamic projectile and method of making same
First Claim
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1. A projectile comprising:
- a projectile body comprising a nose portion, a tail portion, a base, a bearing surface, and a groove cut into the bearing surface, wherein the portion of the projectile between the bearing surface and the groove comprises a curved first transition portion, wherein the curved first transition portion is convex from the bearing surface to the groove relative to a longitudinal axis defined by the center of the nose portion and the center of the base, wherein the curved first transition portion is tangential to the bearing surface, and wherein the curved first transition portion is defined by the von Karman equation.
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Abstract
A projectile is improved aerodynamically by cutting grooves having parabolic transitions between the depth of the groove and the bearing surface. An ejectable tip is attached to the leading edge of the projectile to facilitate greater ballistic coefficient during flight and improved expansion upon impact at a soft target.
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Citations
16 Claims
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1. A projectile comprising:
a projectile body comprising a nose portion, a tail portion, a base, a bearing surface, and a groove cut into the bearing surface, wherein the portion of the projectile between the bearing surface and the groove comprises a curved first transition portion, wherein the curved first transition portion is convex from the bearing surface to the groove relative to a longitudinal axis defined by the center of the nose portion and the center of the base, wherein the curved first transition portion is tangential to the bearing surface, and wherein the curved first transition portion is defined by the von Karman equation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
Specification