Accession Number : ADD011151

Title :   Inhomogenous Anisotropic Kinetic Energy Penetrators.

Descriptive Note : Patent,


Personal Author(s) : Kim,C ; Weimer,R J

Report Date : 10 Apr 1984

Pagination or Media Count : 6

Abstract : This invention is directed to a method of fabricating kinetic-energy projectiles from composite materials in such a manner that the type and degree of local inhomogeneity and anisotropy is controlled for tailoring the mechanical and physical properties of the projectiles for different applications. A continuous rod of composite material is fed into a machine having a stationary holder or gripper and a rotatable holder or gripper which grips the rod. An induction heater heats a particular zone of the rod between the holders. Once the rod zone has been heated, the rotatable holder is rotated through a particular predetermined angular twist about the longitudinal axis, thereby applying a torque on the rod which causes the rod to deform in the heated zone. Depending upon the heated zone length, projectile noses in near final shapes ranging from rather blunt hemispheres to sharp ogives can be formed. Subsequent to twisting, the rod is released and advanced a sufficient length to form two projectile lengths between the shaped ends. The rod is cut in half between the deformed ends to form two projectiles of desired lengths.

Descriptors :   *Patents, *Kinetic energy projectiles, *Composite materials, Fabrication, Rods, Billets(Materials), Induction heating, Rotation, Length, Deformation, Noses, Ogives, Hemispheres, Twist(Motion), Penetration

Subject Categories : Laminates and Composite Materials
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE