A new method of measuring the burning rate of as-manufactured grains of nitrocellulose-based propellants was developed. Chamber pressurization to 50,000 psi (3400 atm) was achieved using a hydraulic pump, rather than a nitrogen intensifier system; the burning interval was monitored by recording the acoustic emission from the burning propellant. Burning rate variations of nitrocellulose-based propellants (M1 and M26), burning at pressures between 10,000 and 40,000 psi, were recognized by examining the level of the combustion-generated acoustic emissions.
Propellant Burning Rate and Combustion Uniformity Identified by Ultrasonic Acoustic Emissions
1976
48 pages
Report
No indication
English
Ammunition, Explosives, & Pyrotechnics , Detonations, Explosion Effects, & Ballistics , Propellant grains , Burning rate , Ultrasonic properties , Acoustic emissions , Measuring instruments , Nitrocellulose , Combustion chambers , Pressurization , Hydraulic pressure pumps , Double base propellants , Nitroglycerin , Test equipment , Test methods , M-1 Propellant , M-26 Propellant
Location of action of burning-rate catalysts in composite propellant combustion
Engineering Index Backfile | 1969
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