Selectable size fragmentation warhead

A warhead with controlled fragmentation, comprising a cylindrical body and having a munition casing;

• said warhead comprising:
• a concentric first cylindrical liner of plastic material that is formed in a predetermined pattern, said first cylindrical liner having an interior surface thereof;
• a centrally located cylindrical explosive charge that is disposed within said first cylindrical liner, wherein said first cylindrical liner completely surrounds the explosive and wherein said explosive completely fills the interior space bordered by the interior surface of said first cylindrical liner;
• a concentric second cylindrical liner of plastic material that is formed in a predetermined pattern, which second cylindrical liner is of a greater diameter to and which is positioned to moveably surround said first cylindrical liner, and;
• wherein the concentric second cylindrical liner has on its interior surface, patterns including a plurality of raised bumps and a plurality of solid liner elements, wherein the raised bumps are interposed among the solid liner elements;
• and
• wherein the concentric first cylindrical liner include patterns which comprise a plurality of recessed areas and a plurality of solid liner elements, and wherein the recessed areas are interposed among the solid liner elements, and;
• wherein upon detonation of the centrally located explosive charge, the detonation energy propagates outwardly from the central region of the munition, through the first and second liners toward the munition casing, thereby fragmenting the casing, and whereby detonation energy propagating through recessed areas of said first cylindrical liner are transferred more readily to the interior of the body, but the detonation energy propagating to the interior of the body after striking through solid liner elements of said first cylindrical liner and through raised bump areas of said second cylindrical liner are more dampened by such solid liner elements;
• and wherein such differences can cause the warhead body to shear and break into fragments with varied controlled sizes;
• and;
• wherein, said second cylindrical liner may be axially rotated around said first cylindrical liner to influence the detonation energy propagating to the interior of the warhead body, whereby such rotation will ultimately even further affect fragment sizes of the fragmenting warhead due to relative depth of liner material experienced by detonation energy propagating in various locations due to random alignment of raised bumps, recessed areas, and solid areas whether in the first cylindrical liner or in the second cylindrical liner;
• and
• wherein the raised bumps on the concentric second cylinder interior are in a checkerboard pattern of rectangular raised surfaces of height equal to about a thickness of the concentric second cylindrical liner so that a raised surface on the liner presents twice the thickness of a non-raised surface, and wherein the rectangular shape is square, wherein each side of the square raised surface is about equal to one third the side length of a recessed area on the concentric first cylindrical liner, and wherein the rectangular raised surfaces fit in to the recessed areas in the concentric first cylindrical liner.