A SHOCK TUBE STUDY OF THE IGNITION LIMIT OF BORON PARTICLES.
AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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A shock tube study was conducted to determine the ignition limit of clouds of boron particles. The ignition limit is an experimentally determined curve, plotted on temperature-pressure coordinates, separating the ignition and no ignition zones. A 3-inch inside diameter constant area shock tube employing a heliumair gas system was used for igniting the boron particles. The particles were ignited in the high temperature region behind the reflected shock wave. The boron samples used were 30-50 micron diameter agglomerates 1-2 micron primary particles and 0.015 micron diameter particles. Ignition delay time of 0.015 micron particles was also obtained. Author
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