United Defense LP

Bae Systems Land & Armaments L.p.

Michael J Hermanson

Brian J Isle

Charles M Bies

Lee C Semmerling

Donald A Nalley

Scott A Miller

Brian Bauman

Disclosed herein is a test gun barrel for use with a long range projectile testing system. The test gun barrel comprising a main gun barrel and a gun barrel extension. The main gun barrel and gun barrel extension each include a joint end having aligning cylinders and bores to properly align the main gun barrel to the extension prior to engaging threaded coupling. A seal capable of being inspected is made once main gun barrel is fully coupled to gun barrel extension.

Test gun barrel extension joint

A method of manufacturing a monobloc gun barrel by calculating an optimal residual stress profile and then applying tailored autofrettage mandrels which are mechanically pressed down the bore of a large caliber barrel, the mandrel size optimized to create a residual stress distribution on the interior of the bore within the design constraints imposed by the worst-case heat flux scenario.

Method for gun barrel manufacture using tailored autofrettage mandrels

Growing community of inventors

Andover, MN, United States of America

Michael J Hermanson