Velocity, kinetic energy, and pressure deviations resulting from the
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Authors
Failla, Charles Carmen.
Subjects
internal ballistics
secondary propellant charge
booster charge
second breech
secondary chamber
secondary propellant charge
booster charge
second breech
secondary chamber
Advisors
Netzer, David W.
Date of Issue
1973-12
Date
December 1973
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A secondary chamber was adapted to a 30-06 pressure barrel as a means for increasing muzzle velocity without exceeding the barrel pressure rating. Ignition of the secondary charge was accomplished by the high pressure gases behind the bullet. Resulting muzzle velocities were determined for various amounts of three granular and one liquid propellant. Pressure-time curves were obtained for one of the faster burning powders. Adiabatic bomb calorimeter testing and published data were used to determine the heats of combustion. The data suggested that the rate of energy release, and not the heat of combustion, was the dominant factor in this experiment. A velocity increase of three per cent and a kinetic energy increase of seven per cent were obtained for eight milliliters of secondary charge. The results also indicated that a more optimum location of the secondary charge was possible.
Type
Thesis
Description
Series/Report No
Department
Aeronautics
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funding
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.