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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.28 SNIP: 0.421 CiteScore™: 0.9

ISSN Imprimer: 2150-766X
ISSN En ligne: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2011001432
pages 397-411

CONVECTIVE BURNING STUDIES OF PYROTECHNIC POWDERS

Alice I. Atwood
Naval Air Warfare Center Weapons Division, China Lake, CA 93555-6100 USA
P. O. Curran
Naval Air Warfare Center Weapons Division.China Lake, CA 93555-6001
K. P. Ford
Naval Air Warfare Center Weapons Division (NAWCWD), China Lake, CA 93555, USA
S. A. Baynar
Naval Air Warfare Center Weapons Division (NAWCWD), China Lake, California 93555-6100, USA
J. F. Moxnes
Norwegian Defense Research Establishment (FFI), N-2007 Kjeller, Norway
G. Odegardstuen
NAMMO, Raufoss, NO-2831 Raufoss, Norway
C. J. Wheeler
Naval Air Warfare Center Weapons Division (NAWCWD), China Lake, California 93555-6100, USA

RÉSUMÉ

The ignition threshold and combustion characteristics of two pyrotechnic powders (A and B) initiated by mechanical stimulation were examined. A piston-driven compaction (PDC) experiment was used to compare the two powders. The two powders differ in their oxidizer type and initial particle size distribution. It was found that Pyrotechnic A, formulated with potassium perchlorate, had a lower ignition threshold (∼80 m/s) than Pyrotechnic B (∼120 m/s), which was formulated with a blend of ammonium nitrate and barium nitrate. Compaction wave front velocities through the sample were a function of piston velocity and were comparable for the two samples; however, the characteristics of a "sustained" combustion front differed between the two samples. Powder models were developed for the two materials and used to simulate the PDC experiments.


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