I'm not a huge fan of perchlorate based mixtures like the SRBs. Perchlorate ion is kind of interesting in that it behaves a bit, but not exactly, like iodine. Biochemically, it means thyroid attempts to process it like iodine but fails. In adults that's reversible, but in children it can cause permanent developmental issues.
Incidentally, presence of perchlorates is also one of the main concerns with martian soil.
At least a hydrogen or methane explosion is quite clean, even cleaner than kerosene.
Incidentally, presence of perchlorates is also one of the main concerns with martian soil.
At least a hydrogen or methane explosion is quite clean, even cleaner than kerosene.