An aerodynamic projectile is provided having a shell with an aerodynamic structure and a controlled center of gravity, and which exhibits improved aerodynamics and resulting accuracy, and which is suitable for less lethal uses. The projectile shell has a closed front cavity housing a payload, such a
An aerodynamic projectile is provided having a shell with an aerodynamic structure and a controlled center of gravity, and which exhibits improved aerodynamics and resulting accuracy, and which is suitable for less lethal uses. The projectile shell has a closed front cavity housing a payload, such as a marking agent, therein. The projectile shell also has an open rear portion to provide access to the open rear cavity, and to decrease the weight of the projectile and appropriately locate the center of gravity. The projectile shell also includes a plurality of fins on a sidewall member to enhance the accuracy of the projectile.
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1. A less lethal projectile comprising: a shell comprising a generally hemispherical member in a first portion of the projectile, a sidewall member in a second portion of the projectile, and a cross member therebetween, the cross member integrally formed with the sidewall member and consisting of th
1. A less lethal projectile comprising: a shell comprising a generally hemispherical member in a first portion of the projectile, a sidewall member in a second portion of the projectile, and a cross member therebetween, the cross member integrally formed with the sidewall member and consisting of the same material as the sidewall member;the generally hemispherical member having an outer surface and an inner surface, the inner surface of the generally hemispherical member and a first surface of the cross member defining a closed cavity having an interior volume;the sidewall member having an inner surface and an outer surface, and a first end abutting the generally hemispherical member and a second end distal the generally hemispherical member, the inner surface of the sidewall member and a second surface of the cross member forming an open cavity opposing the closed cavity of the generally hemispherical member, the open cavity being generally open at the second end of the sidewall; anda fill located within the closed cavity of the generally hemispherical member, the fill having a marking component, and the fill having a density of greater than 10 lb/gallon such that the center of gravity of the projectile is located within the closed cavity. 2. The projectile of claim 1, wherein the sidewall member is generally cylindrical in shape. 3. The projectile of claim 1, further comprising a plurality of protrusions extending from the outer surface of the sidewall member. 4. The projectile of claim 2, wherein the outer surface of the protrusions has approximately the same outer diameter as an outer diameter of the generally hemispherical member. 5. The projectile of claim 2, wherein the protrusions comprise fins. 6. The projectile of claim 5, wherein the fins radially extending from the sidewall member provide a generally outer cylindrical circumference for the sidewall member having approximately the same diameter as the generally hemispherical member. 7. The projectile of claim 1, wherein the sidewall member has a frustoconical shape with a larger outside diameter at the first end of the sidewall member than at the second end of the sidewall member. 8. The projectile of claim 5, wherein the fins are orientated at approximately 99° to a plane of the first end of the sidewall member. 9. The projectile of claim 5, wherein the radial thickness of the fins is approximately 0.03″ at their thickest portion adjacent the second end of the sidewall member, and wherein the thickness of the fins decreases toward the first end of the sidewall member. 10. The projectile of claim 1, wherein the generally hemispherical member is fixedly connected to the sidewall member. 11. The projectile of claim 1, wherein the cross member is integral with one of the generally hemispherical member and the sidewall member prior to joining of the generally hemispherical member and the sidewall member. 12. The projectile of claim 1, wherein there is no additional structure radially interior of the sidewall member, thereby providing free access to the open cavity. 13. The projectile of claim 1, wherein the overall weight of the projectile is less than 3.3 grams. 14. The projectile of claim 1, wherein the density of the fill in the closed cavity is approximately at least 15 lb/gallon. 15. The projectile of claim 1, wherein the density of the fill in the closed cavity is approximately 16 to 17 lb/gallon. 16. The projectile of claim 1, wherein a radius of the generally hemispherical portion is approximately equal to a length extending from the first end to the second end of the sidewall member. 17. A projectile comprising: a shell comprising a generally hemispherical member in a first portion of the projectile, a sidewall member in a second portion of the projectile, and a cross member therebetween, the cross member integrally formed with the sidewall member and consisting of the same material as the sidewall member; the generally hemispherical member having an outer surface and an inner surface, the inner surface of the generally hemispherical member and a first surface of the cross member defining a closed cavity having an interior volume; the sidewall member having an inner surface and an outer surface, and a first end abutting the generally hemispherical member and a second end distal the generally hemispherical member, the inner surface of the sidewall member and a second surface of the cross member forming an open cavity opposing the closed cavity of the generally hemispherical member, the open cavity being generally open at the second end of the sidewall;a plurality of fins extending radially outward from an outer surface of the sidewall from adjacent the second end of the sidewall toward the first end of the sidewall, the fins having an outer perimeter with approximately a same outer diameter as an outer diameter of the generally hemispherical portion; and a marking agent in the closed cavity such that the center of gravity of the projectile is located within the closed cavity. 18. The projectile of claim 17, wherein the marking agent has a density of greater than 10 lb/gallon. 19. The projectile of claim 17, wherein the interior volume comprises approximately one cubic centimeter. 20. The projectile of claim 17, wherein the fins are orientated at an angle to a plane of the first end of the sidewall. 21. A projectile comprising: a shell comprising a generally hemispherical member in a first portion of the projectile, a sidewall member in a second portion of the projectile, and a cross member therebetween, the cross member integrally formed with the sidewall member and consisting of the same material as the sidewall member; the generally hemispherical member having an outer surface and an inner surface, the inner surface of the generally hemispherical member and a first surface of the cross member defining a closed cavity having an interior volume; the sidewall member having an inner surface and an outer surface, and a first end abutting the generally hemispherical member and a second end distal the generally hemispherical member, the inner surface of the sidewall member and a second surface of the cross member forming an open cavity opposing the closed cavity of the generally hemispherical member, the open cavity being generally open at the second end of the sidewall;a plurality of symmetrically spaced fins extending outward from an outer surface of the sidewall at an angle from adjacent the second end of the sidewall toward the first end of the sidewall, the fins having an outer perimeter with approximately a same outer diameter as an outer diameter of the generally hemispherical portion; anda marking fill having a density greater than 10 lb/gallon located within the closed cavity such that the center of gravity of the projectile is located within the closed cavity. 22. The projectile of claim 21, wherein the first closed cavity is generally hemispherical in shape. 23. The projectile of claim 21, wherein the generally hemispherical portion is made of a linear polymer that is molecularly orientated to fracture upon impact of the projectile.
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Gibson Gary E. ; Varacins Michael A., Aerodynamic projectiles and methods of making the same.
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