Spin compensated liner for shaped charge ammunition and method of making same
AssigneeWhittaker Corporation
InventorLouis Zernow
Life of this patent
Estimating the term…
Abstract
A shaped charge liner is made by forming a pair of hollow conical sub-liners, without any uncontrolled residual tangential shear stress (e.g. by a deep drawing method) so that they mate together to form a single conical liner. One sub-liner is inserted in the other and then one pair of subliner ends are locked together. Thereafter, the sub-liners are counter-rotated about their attachment point and locked together at their other pair of ends to retain the counter-rotation. This counter rotation generates opposite residual tangential shear stresses in the two sub-liners which may or may not be equal to each other.
Claims9
A method of forming a spin compensating, shaped-charge liner, comprising the steps of:
- forming a pair of hollow, conical sub-liners sized to coaxially mate together;
- inserting one said sub-liner within the other said sub-liner to form a hollow, conical, shaped-charge liner having a longitudinal axis;
- fixedly interconnecting said sub-liners adjacent one pair of ends thereof to lock said one pair of ends against rotation relative to each other;
- rotationally twisting said sub-liners in opposite directions about said longitudinal axis about said one pair of ends to provide each said sub-liner with a tangential shear stress of opposite sign and direction to that in the other said sub-liner;
- fixedly interconnecting said sub-liners adjacent their other pair of ends to substantially preserve said opposite twisting to thereby provide said shaped-charge liner with residual tangential shear stress of opposite sign and direction in each said sub-liner.
A spin compensating, shaped-charge liner comprising:
- a pair of hollow, conical sub-liners sized to coaxially mate together to form said shaped-charge liner, said sub-liners being locked together at opposite ends thereof and being oppositely twisted therebetween to provide said shaped-charge liner with residual tangential shear stresses of opposite sign and direction in each said sub-liner.
Dependencies are inferred from the claim text.