Accession Number:

AD0839855

Title:

THEORETICAL STUDIES OF THE USE OF MULTIPROPELLANTS IN HIGH VELOCITY GUNS

Descriptive Note:

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

• Grollman, Bertram B.
• Baer, Paul G.

Report Date:

1968-08-01

Pagination or Media Count:

48.0

Abstract:

The use of propellant mixtures in high velocity guns, as means of increasing projectile muzzle velocity, is compared with the use of a single propellant. The propellant mixtures vary in chemical composition, web, and burning rate. A theoretical study is made using the M68 105mm high velocity tank gun as a test case. Gun geometry, projectile weight, and propellant shape are not changed from that of the standard gun. Interior ballistic trajectories in the parametric study are computed using a multipropellant interior ballistic digital computer code. Graphical methods are used to determine the optimum propellant mixture needed to maximize muzzle velocity at a given allowable maximum gun breech pressure. The effect of propellant grain shape on the performance of a gun is considered in a separate study. Results from the interior ballistic computer model are also compared with experimental results from the firing of propellant mixtures in the 5-inch and 16-inch guns used to launch high altitude atmospheric probes.

Descriptors:

• *PROPELLANT GRAINS
• *HYPERVELOCITY GUNS
• VELOCITY
• SIMULATION
• PERFORMANCE(ENGINEERING)
• FIRING TESTS(ORDNANCE)
• COMPUTER PROGRAMMING
• ANALYSIS OF VARIANCE
• ATMOSPHERIC SOUNDING
• EROSIVE BURNING
• ADIABATIC GAS FLOW
• CONFIGURATIONS
• PRESSURE
• BURNING RATE
• FRICTION
• PROJECTILE TRAJECTORIES
• SPECIFIC HEAT
• INTERIOR BALLISTICS

Subject Categories:

• Meteorology
• Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE