FIBER WINDING SYSTEM FOR COMPOSITE PROJECTILE BARREL STRUCTURE

摘要

A composite projectile barrel is disclosed comprising a continuous fiber composite outer shell whose average effective coefficient of thermal expansion in the longitudinal direction approximately matches that of an inner liner. In one embodiment, the composite barrel comprises PAN precursor carbon fiber and a thermoset epoxy resin, with the carbon fiber wound at varying winding angles to form a plurality of regions within the outer shell. The finished barrel exhibits light weight, superior axial stiffness and strength, durability, and is reliably accurate.

主权项

1. A barrel for directing the path of a dischargeable projectile, comprising:
an inner liner defining an axial bore, the inner liner having a coefficient of thermal expansion (CTE) along the axial bore; and an outer shell surrounding and in direct contact with the inner liner, the outer shell fabricated from continuous fiber in a matrix creating a continuous fiber composite (CFC) and having an average effective CTE in the axial direction, wherein the average effective axial CTE of the outer shell approximately matches the axial CTE of the inner liner.