What is thermalite fuse and how is it involved in igniting rocket motors?
Thermalite is a type of fuse that has been used in the pyrotechnics industry for a number of years. It comes in three burn rates, identi- fiable by the color of the fuse wrapping: Color Type Burn Rate Usage Pink Slow 20 sec/foot Flashbulb ignition Green Medium 10/sec/foot Ignition enhancer White Fast 5 sec/foot Not used much in rocketry The burn rates are approximate and vary with humidity, temperature, age of fuse, etc. The numbers also correspond to burn rates of exposed thermalite. When enclosed in heat-shrink or teflon tubing, all three types burn at an equally fast rate.
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