Actually, it's pretty simple. If it burns or oxidizes, and you powder it
fine enough and mix it with an oxidizer (or in the case of oxidizers, a
fuel), it will probably explode. Hydrogen. Flour. Fertilizer. Sawdust.
Natural gas. Sugar. Bird doo. Steel.
Fortunately, the law clearly says "primary or intended use". Of the items
listed, the only ones whose primary or intended use is to explode are
gasoline and diesel fuel. I see where gasoline is exempted, but what about
diesel fuel? How is that legal to own or use in an IC engine without a
permit fo some sort?
Bob Kaplow NAR # 18L >>> To reply, there's no internet on Mars (yet)! <<<
Kaplow Klips & Baffle: http://nira-rocketry.org/Document/MayJun00.pdf
The use of the word explode is a fundamental problem with these discussions.
Gasoline and diesel fuels intended purpose is to combust in the engine. They
do not detonate. They certainly combust rapidly, and one could think of them
as "exploding" in the sense that they combust extremely rapidly generating
hot gas that can do work. "Detonation" in it's use as an automotive term is
misleading, the proper term is preignition, and as mentioned already it is
simply ignition of the mixture way ahead of time before the piston reaches
TDC (although ignition a little ahead of TDC is commonplace, but controlled
by ignition timing), causing terrific stresses on the engine. Diesel fuel
is ignited by the heat generated by rapid compression.
All fuels if allowed to react with an oxidizer in a vessel which cannot
maintain integrity at the pressure generated, will "explode". Grain silos
full of organic dust and air can explode due to the pressure created by
combustion of the grain dust. Propane tanks can explode if the vessel fails,
without the benefit of combustion of the propane. Balloons explode if you
poke them with a pin. The list goes on.. endlessly and in tiresome fashion.
And really has little bearing on the issue of compounded propellants.
why isn't diesel fuel regulated as an explosive?
because in order to deflagrate in any manner that is powerful enough to
cause damage it requires an oxydizer, such as amonium nitrate, which is
Bob Kaplow wrote:
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