02-22-2017, 08:16 AM
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Freeform rocketry advocate.
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Join Date: Jan 2008
Location: Claremont, CA "The intellectual capitol of the world."-WSJ
Posts: 3,780
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Quote:
Originally Posted by 5x7
I have some old AT grains that have swelled to about 150% original size.
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That's because they use magnesium. Either magnalum or another metal entirely would work. Aluminium works well long term. It also generates white smoke and in small particle sizes it mostly combusts inside. Mg combusts at lower temperatures and L*.
Jerry
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