Accession Number:

ADA634824

Title:

Prestressed Carbon Fiber Composite Overwrapped Gun Tube

Descriptive Note:

Final rept.

Corporate Author:

ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS

Report Date:

2008-10-15

Pagination or Media Count:

16.0

Abstract:

Traditionally there were two issues with composite jackets the coefficient of thermal expansion mismatch between the steel substrate and the composite jacket causing a gap, and the lack of favorable prestress in the jacket. Dealing with these issues greatly complicated the manufacturing process to the point where mass-producing the barrels would have been problematic at best. By using a thermoplastic resin, a cure on the fly process and winding under tension the manufacturability of the barrels has been greatly improved, the gap has been eliminated, and a favorable prestress has been achieved. A 120mm barrel has been manufactured using this process with IM7 fibers in a PEEK matrix and successfully test fired. This paper will present the design, manufacturing, test firing and fatigue testing of this barrel.

Subject Categories:

  • Refractory Fibers
  • Laminates and Composite Materials
  • Guns

Distribution Statement:

APPROVED FOR PUBLIC RELEASE