Accession Number:

AD0499520

Title:

5-In./54 Projectiles Type EX 23 Mod 1; Test of. Recovery Firing of 5-in. /54 Projectiles Type EX 23 Mod 1 in a Worn Gun

Descriptive Note:

Partial rept. no. 15 and Final rept.

Corporate Author:

NAVAL PROVING GROUND DAHLGREN VA

Personal Author(s):

• Butler, Rex B.

Report Date:

1952-12-01

Pagination or Media Count:

17.0

Abstract:

Three 5-in.54 projectiles Type EX 23 Mod 1 were fired for spin and recovery from a 5-in.54 Mk 18 gun in the last quarter of its life, at a charge that gave 28 tsi copper proof pressure in a new barrel. This test was fired to determine the performance of the projectiles in a worn gun. It is concluded that the performance of the projectile Type EX 23 Mod 1 when fired in a worn gun 1358 ESR, at approximately 3050 ft.sec. velocity, is unsatisfactory because of excessive body engraving, yaw and erratic flight as noted by yaw cards.

Descriptors:

• *GUN BARRELS
• ACCEPTABILITY
• FIRING TESTS(ORDNANCE)
• LIFE EXPECTANCY(SERVICE LIFE)
• NAVAL GUNNERY
• NAVAL GUNS
• PROJECTILE TRAJECTORIES
• RECOVERY
• ROTATING BANDS
• SPINNING(MOTION)
• VELOCITY
• YAW

Subject Categories:

• Armor
• Guns

Distribution Statement:

APPROVED FOR PUBLIC RELEASE