The present invention discloses a bullet with a negative Poisson's ratio effect and a method of designing thereof. The bullet includes a cylindrical section of the bullet having a negative Poisson's ratio design, and a conical tail of the bullet and a tip of the bullet each with a matching design; the cylindrical section of the bullet is a tubular structure having periodically alternating transverse and vertical holes; the tubular structure includes a plurality of holes, with a center axis of one hole being axially perpendicular to a center axis of another adjacent hole, that is, the axis of each hole being structurally orthogonal to an adjacent hole; and the holes in rows and columns are periodically arranged into the tubular structure, which is a tubular structure having the negative Poisson's ratio effect.

The present invention discloses a bullet with a negative Poisson's ratio effect and a method of designing thereof. The bullet includes a cylindrical section of the bullet having a negative Poisson's ratio design, and a conical tail of the bullet and a tip of the bullet each with a matching design; the cylindrical section of the bullet is a tubular structure having periodically alternating transverse and vertical holes; the tubular structure includes a plurality of holes, with a center axis of one hole being axially perpendicular to a center axis of another adjacent hole, that is, the axis of each hole being structurally orthogonal to an adjacent hole; and the holes in rows and columns are periodically arranged into the tubular structure, which is a tubular structure having the negative Poisson's ratio effect.

A radar-absorbing material projectile system including a projectile with an outer layer of radar-absorbing material (RAM). A carrier or armature is disposed around the projectile, protecting the layer of RAM during the firing sequence. In some embodiments the carrier is a discarding carrier which falls away after firing, rendering the projectile low-observable with regard to radar detection due to the layer of RAM.

A radar-absorbing material projectile system including a projectile with an outer layer of radar-absorbing material (RAM). A carrier or armature is disposed around the projectile, protecting the layer of RAM during the firing sequence. In some embodiments the carrier is a discarding carrier which falls away after firing, rendering the projectile low-observable with regard to radar detection due to the layer of RAM.

A double impact bullet with internal hammer and stabilization post.

A double impact bullet with internal hammer and stabilization post.

A monolithic bullet has a tapered nose and a cylindrical shank. The shank has a sealing boss, a groove, a case alignment boss, and a bore riding surface. The case alignment boss is adjacent the nose and has a diameter greater than the nominal groove diameter of a rifle barrel of the same caliber as the bullet. The groove is adjacent the sealing boss and has a diameter less than the nominal groove diameter of the barrel. The case alignment boss is adjacent the groove and has a diameter approximately equal to or less than the nominal groove diameter of the barrel. The bore riding surface has a diameter approximately equal to the nominal bore diameter of the barrel.

A method for making an improved projectile 360, 460 by defining a discontinuity, groove or trough in a distal ogive section of the projectile to provide an external ballistic. effect uniforming surface feature (e.g., nose ring groove 369, 469) which makes an unsupported gap in the ogive profile that beneficially affects the flow of air over the front half of the ogive. The improved bullet's external surface discontinuity feature (369 or 469) creates effects in the flowfield that dominate any dynamic effects from bullet-to bullet manufacturing inconsistency and resultant differences in dynamic behavior.

The invention relates to biodegradable unit doses intended to contain, store, preserve, transport and dispense an aqueous formulation. The doses comprise a shell containing the aqueous formulation, which is made of a material comprising a mixture of biodegradable polymers A and B, such that: —biodegradable polymer A is a thermoplastic polymer having a glass transition temperature of less than 0° C. and —the biodegradable polymer B is a thermoplastic polymer having a glass transition temperature greater than 50° C., characterised in that the unit dose is spherically shaped comprising two poles and an equatorial area, —the equatorial area corresponding to a junction of the two hemispheres and —the shell having at least one line of circumferential weakness, or even two lines of circumferential weakness, located between the equatorial area and one or both poles.

The invention relates to biodegradable unit doses intended to contain, store, preserve, transport and dispense an aqueous formulation. The doses comprise a shell containing the aqueous formulation, which is made of a material comprising a mixture of biodegradable polymers A and B, such that: —biodegradable polymer A is a thermoplastic polymer having a glass transition temperature of less than 0° C. and —the biodegradable polymer B is a thermoplastic polymer having a glass transition temperature greater than 50° C., characterised in that the unit dose is spherically shaped comprising two poles and an equatorial area, —the equatorial area corresponding to a junction of the two hemispheres and —the shell having at least one line of circumferential weakness, or even two lines of circumferential weakness, located between the equatorial area and one or both poles.