FIELD: weapons and ammunition.
SUBSTANCE: proposed barrel represents a partially or completely composite duplex design. Barrel inner pipe is made of material with higher thermal expansion factor. Outer barrel pipe is made of material with lower thermal expansion factor and higher heat conductivity. In compliance with another version, this barrel is a triplex design. Barrel inner pipe is made of material with the highest thermal expansion factor. Outer pipe is made of material with better heat conductivity. In compliance with another version, mid pipe is made of material with the worst heat conductivity. In compliance with another version, this barrel is a four-layer design. Barrel inner pipe is made of material with the highest thermal expansion factor. Outer ribbed pipe is made of material with the highest heat conductivity.
EFFECT: reduced barrel ID thermal expansion.
4 cl, 4 dwg
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