Accession Number:

AD0499465

Title:

Interior Ballistic Studies. Rapid-Fire Tests of Picrite Type Cool Powder in a 3 in./50 Caliber Gun Mark 22 Mod. 4.

Descriptive Note:

Partial rept. no. 29 and Final rept.,

Corporate Author:

NAVAL PROVING GROUND DAHLGREN VA

Personal Author(s):

• Dickson, D. A.

Report Date:

1951-08-25

Pagination or Media Count:

25.0

Abstract:

This report covers rapid-fire tests 2000 rounds of a picrite type cool propellant in a standard 3 in.50 caliber Mark 22 Mod. 4 gun barrel. The barrel was fired with schedules of seven 25 round bursts allowing 20 seconds to elapse between bursts. Projectile velocities, VT-fuze performance, range dispersion, and other ballistic data as well as bore gauging and inspection information were obtained. The object of this test was to determine the wear rate of a standard 3 in.50 caliber Mk 22 Mod. 4 gun barrel when fired with a picrite type cool powder under rapid-fire conditions.

Descriptors:

• *GUN BARRELS
• WEAR RESISTANCE
• GUN PROPELLANTS
• FIRING TESTS(ORDNANCE)
• CYCLIC RATE
• LIFE EXPECTANCY(SERVICE LIFE)
• EROSION
• INTERIOR BALLISTICS
• RADIO PROXIMITY FUZES
• PROJECTILES
• NITROGUANIDINE
• EXTERIOR BALLISTICS
• VELOCITY
• SCATTERING
• CIRCULAR ERROR PROBABLE

Subject Categories:

• Ammunition and Explosives
• Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE