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Accession Number:
ADA002046
Title:
Muzzle Erosion of Cannon.
Descriptive Note:
Technical rept.,
Corporate Author:
WATERVLIET ARSENAL N Y
Report Date:
1974-11-01
Pagination or Media Count:
24.0
Abstract:
Bore enlargement, or erosion, at the muzzle of cannon can limit their useful lives by causing unacceptable increases in range and azimuth dispersion. This wear is restricted to the lands of the rifling and is mechanical wear resulting from sliding of the projectile. A service projectile travels down the front portion of the tube with the largest yaw possible. This results in centrifugal loading and asymetric loading caused by propellent gases leaking past the base. With heavy projectiles, high muzzle velocities, etc., the transverse loading exceeds the load carrying capacity of low-melting, high thermal conductivity rotating bands such as the conventional copper alloy bands this allows the steel body of the projectile to slide directly on the lands of the rifling. Basically, the remedy lies in decreasing the transverse loading andor increasing the load carrying capacity of the rotating bands or the wear resistance of the cannon bore.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
