[AR] Re: Hydrogen: Fireworks

  • From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
  • To: Arocket List <arocket@xxxxxxxxxxxxx>
  • Date: Wed, 15 Jul 2020 23:46:16 -0400 (EDT)

On Wed, 15 Jul 2020, Craig Fink wrote:

The interesting thing you bring up, is that Propane would be a solid in LOX.

Actually, no, propane is still liquid at the normal boiling point of LOX. The good news is that they're mostly immiscible -- the two liquids won't mix much. The bad news is that they're miscible *enough* that the result is still explosive.

With Hydrogen: Fireworks, it would be the Oxygen that is the solid. SOX
instead of LOX. Powdered SOX in Liquid Hydrogen, interesting, is it safe? 

Almost certainly not. Powder has too much surface area. Powdered fuel in liquid oxidizer is almost always an explosive, and I bet it works the other way 'round too.

Also a bit tricky to make. You can't just dump LOX into LH2 -- that will boil off *all* the LH2, not just a little bit of it. (LOX is much warmer than LH2, and it takes very little added heat to boil LH2.)

Henry

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